Origin
of the Species
Beloved of our Fiat Twin Cam Register, the Fiat Twin Cam engine is fast
approaching its fortieth birthday. MT explains why it continues to be
so popular.
Without getting hugely technical – the
efficiencies of the twin cam engine had been recognised in motor sport
for most of the 20th Century. It can provide power and torque advantages
over other head configurations by allowing better combustion chamber
shape and valve inclination, (aiding flow of gases across the chamber
and the flame path at ignition) as well as central spark plug location.
Having the cam lobes operate directly onto the valve assembly also minimises
valve chain inertia by minimising the amount metal in the path to open
the valve. Most of this is a very good idea if you want to increase
the usable power and efficiency of a car engine.
Twin cam engines were common in racing cars by the forties and fifties.
But were considered expensive to maintain and build. Adjusting and keeping
the optimum valve clearances was time consuming, as most designs required
the camshafts to be removed to fit new shims etc. Sports car manufacturers
like Aston Martin, Jaguar, Ferrari and Lamborghini all used a ‘double
overhead cam’ (dohc) twin cam layout.
It was Aurelio Lampredi’s vision when he moved to Fiat from Ferrari
that created the first mass production twin cam for normal road cars
in 1966. He oversaw Fiat’s focus on engines during this time -
including development efforts to improve combustion efficiency and maintainability
of the designs. The Fiat Twin Cam also needed advances in manufacturing,
materials and machining quality to help increase engine reliability.
In summary, Lampredi’s twin cam was sophisticated, efficient and
didn’t require the traditional level of maintenance or tools to
sustain optimum operation.
I recall the shock I felt some years later when I first had the opportunity
to compare the under-bonnet architecture of two twin cams, a 124 special
saloon and my fast and powerful Lotus Cortina…. to find the Lotus
engine clearly inferior in several ways to this mass-produced Fiat.
I stopped listening to propaganda
against Italian cars the same year after a similar ‘back to back’
comparison between an MG ‘B’ and a 124 Spider - both produced
in the same year. Cart springs, lever arm shockers, drum brakes and
the ‘B’ series ‘Siamese’ ported, push rod engine
– and of course guess which was the rustier! ‘Nuff said
really.
The UK general motoring press tended to damn the Fiats with faint praise
on the lines of ‘eager but odd’, or ‘goes well but
too Italian for us’. Actually if the first Italian Job film had
been made with reversed roles - the English Job, if you like, with Abarth’s
500/600s instead of Cooper’s Minis - it would probably have been
a much shorter film as the Italians would have got through the ‘traffic’
a damn sight faster!
The
Twin Cam Evoluzione
Time out called for definitions. For once only in this ranting, I’ll
say that the official description of the twin cam cylinder head is a
Dual Over-Head Cam (dohc). Fiat’s version of a twin cam is the
Twin Cam or affectionately ‘twink’. And any Fiat with TC
on the back refers to this – and not “Twin or Two”
anything else beginning with “C”.
Get a coffee or beer, I feel a long bit of typing coming on as I’m
going to go through all the production and some competition based development
I know something about.
Lastly, we
can review the 'Alpha and Omega' of the Lampredi Twin Cam as the 4 cylinder
is no longer in production. The line began with the 124 in 1966 and
ended with Lancia's New Delta in 1998. Of course Fiat know-how has spawned
three other forms of twin cam described here, within their principle
models. Each has its own very distinctive attributes.
You must forgive
me if you disagree, my own pride of place goes to the original and the
classic twink and the cars that it powered so well. In competition it
started with an 1197cc push rod block, alloy twin cam head and enthusiastic
privateer Italians. Then to the 1600 and onward through the Integrale
and Nine World Rally Championship Titles finishing
in the 600bhp turbo track monsters of today. The dedication and passion
wrapped into this evolution is always apparent to me.
1998 was also
the end of the line for the Fiat Twin Cam Register as we formerly began
the process to change the club's name to Sporting Fiats Club. I hope
you find these classics and the club are secure in our hands.
Fiat
124
The 124 Sport series was announced at the Turin Motor Show in the autumn
of 1966 with the 124 Sport Spider and its Twin Cam engine. Strictly
speaking it was a push rod engine block with a Twin Cam head. All the
124 ‘Sport’ series had versions of this twin cam fitted.
The 124 Saloon had been launched earlier that year with a push rod 1197cc
engine. A production rate of 1000 cars a day was soon established. Over
the next four years progressively better equipped 124’s were offered.
Right hand drive versions appeared from 1967 while in 1970 the first
124 Special T saloon bearing a 1438cc Twin Cam engine arrived. The twin
cam head on pushrod engine block remained until 1971 when the 132 engine
variants were available.
The 124 Special T engine was rated at 80bhp and the car
had all round disc, dual circuit brakes, an alternator, twin headlights,
radials, and a rev counter, but only a four speed gearbox. A revised
124 saloon series was produced in 1973 and 1974, which included the
1592cc Twin Cam and a 5 speed box with 3.9:1 final gearing. The fifth
gear being an overdrive add-on to the earlier 4 speed box.
The 124 ST in this last form gave little external hint of its performance
potential. Like many Fiat Sports later on they didn’t flaunt it.
This is also the era before emissions regulations, so these engines
revved freely.
The 124’s rectangular shape was last produced in Italy in 1974
but production continued in Russia into the 1990’s as the Lada
or Vaz. It’s a shame they didn’t make a twink engine too!
Some enterprising UK budget rally enthusiasts fitted Fiat running gear,
competition rally engines boxes and axles to Ladas for top value club
rallying! The last time I saw one of these was on the BBC TV Top Gear
programme about a year ago when Clarkson challenged Lotus to make a
Lada go faster. Come to think of it that was also the last time I saw
Guy Croft too (brought in by Lotus to fettle the odd 180bhp from the
Fiat twink transplanted into the car.)
Anyway the 124 was also made in South Africa, Croatia, Spain (SEAT)
and Argentina as well as being assembled in Bulgaria, Ireland, India,
Morocco, and several other parts of South America. At over thirty years
is this the longest Fiat production run ever? No, I think the 500 series
holds that honour - but it’s close. Total Italian 124 production
was over 1.5 million cars. I don’t have figures for the rest of
the world – the Russians have certainly made significant numbers
of Ladas.
124 Spider
One of the great seventies mysteries to me is why Fiat never made the
124 Spider fully available in the UK. No right hand drive versions of
this car were made. It was a highly successful export all around the
world with 170,000 sold in the USA alone. And to try and solve a little
SFC debate of the recent past… some of them were badged as Spyder
by Fiat at certain times in some countries. The two spellings are interchangeable.
Fiat made it so!
The Pininfarina designed wing, recessed headlights and bonnet aperture
of the 124 Spider have tended to make a wayward comparison with the
MG ‘B’ common among anglophiles. As I’ve already hinted
the ‘B’ was technically and mechanically inferior –
and a test drive in both would convince all but the hardened MG fan.
As others have pointed out before me no ‘B’ ever won the
European Rally Championship either!
124AS Link to model page
Historically the engine chosen for the first series of
124AS was the 90bhp 1438cc unit – with pushrod engine block and
twin cam cylinder head, similar to the 124 saloon. The 124 Spider was
available in limited numbers across Europe during 1967, but in 1968/9
numbers increased. The only real mechanical change then made was to
drop the torque tube transmission in favour of a propshaft. The AS designation
comes from the car's VIN plate code.
124BS Link to model page
Late in 1969 (that would be about chassis number 21000) the 110bhp 1608cc
engine from the 125 was introduced, alongside the smaller twink engine
option. Later known as the 124BS, this series has bonnet 'power' bulges
to accommodate its twin carbs. The capacity increase to 1608cc was achieved
by increasing the stroke of the 1438cc engine from 71.5mm to 80mm –
the 80mm bore was retained in future versions too. All the 124’s
fitted with this engine also had a ‘1600’ badge on one of
their rear facing panels.
124CS Link to model page
Late in 1972 the 124CS was introduced taking advantage of the 1592cc
and 1756cc engines from the 132 saloon. Unfortunately USA emissions
regulations and the oil crisis affected this series. No twin carb. options
were available and the road going model of the 124 Spider Abarth was
cancelled. We were left with just 1000 of the 124 Abarth Rally’s
produced to homologate the car for FIA Group 4 rally competition.
The 1975 124CS with its single carb. and somewhat strangled breathing
was the last Spider to be sold in Europe via Fiat dealerships until
the 1982 Spidereuropa. During this period the cars were only orderable
direct from the factory with the American spec. (You can have any spec.
you like so long as it’s US sir.) Initially the 124CS ‘1800’
was rated at 118bhp. By 1977 the power output fell to around 87bhp under
US emissions regulations. These regulations dealt a heavy blow to the
twinks. The large bore - large valve - hemispherical chamber design
was built for free revving and power first. Economy and emissions were
secondary goals, and combined with the carburation available at the
time, Fiat struggled to achieve the successive emissions targets in
the seventies.
Returning to the engine theme, Fiat had taken the engine block design
another step forward. The 1756cc is an over-bored version of the 1592cc,
with 84mm and 80mm bores. The blocks share water/ oil gallery layouts
and similar engine bay layouts to later cars.
My first advice for anyone looking for better performance or a freer
revving twink remains the same from this point onwards. Look to the
air filters and exhaust system, then the carburetor(s) and manifolds,
and lastly the cams valve/ head and carbs together. Fiat tend to ‘strangle’
the noise out of their Twin Cams and appear to pay less attention to
the resulting performance deficit. Because the twink is such an inherently
good performer it's relatively easier and cheeper to put it back. The
same sorts of ‘rules’ apply to tuning all the twinks for
the next 15 years from the 132 onwards. And this is practical evidence
of the evolutionary nature of twink engine development. (My apologies
to any owners precluded from such changes by local regulations). Back
to the plot…
124 Abarth Rally Link
to model page
The 124 Spider Abarths were produced at Abarth for two
years from 1972… with special lightweight body panels, glassfibre
boot and bonnet, minimal bumpers and alloy door skins. The mandatory
hard top was fitted with a perspex rear window and of course with Abarth
CD30 alloy wheels plus Recaro bucket seats. The 1800 engine had twin
Weber 44IDF carbs and it had a unique fully independent rear suspension
design complete with anti-roll bar. Within 12 months, a full performance
package was available to take the cars’ 128bhp basic road output
to 170bhp. In later rally variants Abarth produced a 16-valve head to
help keep up with the world rally competition. But obviously there were
considerable differences between the homologation road going and competition
Abarths.
124 Spider 2000 & Pininfarina Special
Edition Link to model page
In 1978 the final series was introduced as the Spider 2000, with body
styling bumper and interior changes. 8 months later fuel injection and
automatic transmission were introduced as options. Although power output
was increased to about 100bhp, the ride height was raised and the CS
hydraulic bumpers weighed nearly the same as the car’s transmission!
The 2000 spec. car with fuel injection, 8.2:1 compression, and high
ratio final drive returns 35 mpg – but couldn’t rev much
beyond 5300rpm.
In 1981 a special edition 124 2000 was produce to commemorate Pininfarina’s
50th anniversary. 1000 cars were sold with leather interiors, Abarth
style wheels and metallic paint.
124 Turbo 2000 Spider Link
to model page
Perhaps as a result of customer requests, with the agreement of Fiat
Motors North America, Legend Industries (of New York State) were contracted
to provide 1200 turbo conversions during 1981. These kits had to comply
with emissions regulations, maintain fuel economy and generate a significant
power increase (rated at about 125bhp). This did less than you might
anticipate to the performance levels due to the weight side of the power
to weight ratio! It was marketed as the Fiat Turbo Spider. Warner IHI
of Japan were chosen to provide the turbo (IHI type RHB6). It was compact
and lightweight. For the level of boost an intercooler was not considered
necessary – which simplified the kit and installation costs. The
Bosch L-Jetronic fuel injection was modified to enrich the mixture,
and a Lambda sensor was added to the turbine housing output case. The
124 Turbo package also included Cromadora 14in wheels plus coachwork
stripes and badges.
124 DS Azzura & Spidereuropa – The Pininfarina Years
Link to model page
In 1982 124 production was transferred to Pininfarina creating the Spider
Azzura in America and the Spidereuropa in Europe. Pininfarina had always
produced the body shell and now made and distributed the complete car.
A similar arrangement occurred with Bertone and the X1/9 at this time
as part of a Fiat and Lancia rationalisation of their production.
The new Pininfarina 124’s were labeled ‘124DS’ with
engines rated at about 105bhp – the Europa being without the catalytic
converter mandated in the States for the Azzura.
Lancia’s earlier collaborations with Abarth during the seventies
had spawned some interesting competition equipment, including the Volumex
supercharger – which Lancia installed in the Trevi, Beta Coupe/
HPE, and Fiat used in the Argenta.
124 Spidereuropa Volumex Link
to model page.
In the ‘GTi’ era of hot hatches the final chapter of the
124 Spider includes the Spidereuropa Volumex. The belt driven ‘positive
displacement’ Volumex was developed specifically for the Twin
Cam range with serious work undertaken latterly for the Fiat 131 Abarth
prototype race cars. Testing was carried out in both 1.3l and 2.0l form
with 131 Sports chassis (later marketed separately as the 131 ‘Abarth
Volumetrico’ - see below). The low down instant torque of the
Volumex blower suits these cars and Twin Cam road going applications
well. Why superchargers? Lampredi's influence in encouraging the use
of blowers - as opposed to turbo's has been noted in several autobiographies.
They didn't need the same level of sophisticated engine management as
turbos to make reliable road cars. (The Uno Turbo was the first of the
production turbo Fiats).
After 12 months development, in 1983, manufacture began of the ‘Abarth
Spidereuropa’. 500 cars were produced before Pininfarina ceased
in 1985. The car is finished to very high standards with Bilstein gas
shockers, Speedline 7j x15inch split rims, extended arch trims, ventilated
discs and a top speed of 120mph. The engine layout is typical of Abarth’s
input with coolant and airflows closely regulated to improve engine
operation. Everything about the engine was re-engineered with special
cams, pistons, piston rings, sodium filled valves, as well as a unique
36 DCA7/250 Weber twin choke carb. The 2-litre was conservatively quoted
at 135bhp, with a maximum of 1.4bar from the blower. It’s capable
of a lot more.
I’d
like to know whether it was financial/cost, marketing/distribution or
maintenance problems that caused Pininfarina to stop production. It
has been suggested that Pininfarina stopped making the 124DS when no
more gearboxes were available from Fiat - as all Fiats produced from
this point have front wheel drive. As alternative sources for the gearbox
components were available, I doubt that this alone would have been enough
to end it all.
There should
be more of these Spidereuropa VX’s in the world today. Simply
marketing the cars direct to interested Fiat European car clubs should
have sold more than 500 of them. Anyway 40 were painted black and the
rest were ‘Abarth’ red. I suspect Pininfarina couldn’t
make the project profitable enough but in engineering terms the 124
evolution ended on a fittingly high note.
124
Coupe
Yes, for the younger generations of browsers there was another Fiat
Coupe ‘TC’. Its impact on the motoring world in 1967 was
even greater than the nineties version! Furthermore line up the Saloon
Spider and Coupe variants of the 124 in 1968, you’d be hard pressed
to spot they came from the same manufacturer.
124AC
The 124 coupe made by far the greatest impact of the three in the UK.
Its cornering ability – in the 124AC – is excellent. Unlike
its later brethren the AC keeps all its wheels on the ground in hard
cornering and doesn’t engage in the ‘ducking and diving’
antics of the saloon. The lightweight door pillars provide a light,
airy feel and look to the car.
One of the fashions in this era was towards the GT or fastback shape.
The 124AC suggests this while retaining a boot and headroom for four
adults. The AC also had servo disc brakes all round, an optional 5-speed
box and full instrumentation as standard. The torque tube transmission
seems to help rear end stability of this dream of a little car on the
early examples too.
Put it this way. There are very few sixties cars I would join a queue
to drive. My old ‘A’ frame modded Lotus Cortina, a Lotus
Elan and the 124AC would be near the top of a very short list. The 124AC
is one of the very best of its day. And just as the Elan needs later
suspension upgrades and the big valve head, this Fiat only really needs
the later 1608cc engine from the 125 series to match any Elan I’ve
driven in cornering. If you’re into collecting old Fiat greats,
why haven’t you got one yet? Ah yes, they rust.
124BC
In 1969 the second series, 124BC was launched. It should have been easy….
slight body mods and more power in the same chassis right? Wrong.
Like so many manufacturers before, since and no doubt again in the future,
Fiat took a winner and softened it up for popular appeal. The springs
were softer, the back axle and pick up points revised which combined
to give understeer, body roll and inside rear wheel lifting traits in
corners. Its high gearing (4.3:1 final drive) made for good fast starts,
but noisier cruising. As with the Spiders, the 124BC upgrades are base
upon the 125 designs. The BC was offered in single carb 1438cc and twin
carb 1608cc form.
124CC
The next major update for 124 coupes occurred late in 1972 with the
new 132 based components and engine. The new 124CC had a 1756cc option
with 120bhp quoted (up from 90 & 103bhp in the first two series).
The styling looks heavier on the CC. The car is heavier with the larger
engine and front panels. It’s revised frontal area and grill with
its split bumper has always been controversial. The CC was withdrawn
in 1975 although SEAT continued to make these models until 1977.
Link
to model page.
125,
Berlina and Special
In 1968 Fiat needed to rapidly update their medium sized saloons. To
save design time, (125 was completed in 6 months) the floor pan of the
previous 1300/1500 model was used. Bodywork was based on the 124 Berlina
saloon, lengthened to fit onto the 1300 chassis. So although similarly
shaped, the 125 and 124 actually share few panels. The 125 suspension
and steering retains the older 1500 layout. Front suspension components
were common to the Fiat Dino, while the rear suspension was derived
from the 1300/1500 with leaf springs and trailing radius arms. The 124
1483cc engine was ‘stroked’ to 1608cc and produced 90bhp
(type 125 A. 000).
125S
Simultaneously Fiat also offered the 125 Special with a 100bhp spec
engine (125 B. 000) having a different camshaft and inlet manifold,
but otherwise similar to the 125. In 1971 revisions were made to the
125S with a revised grill front bumper and coach trim in a second series.
A General Motors auto or five-speed manual box option was also available.
Road tests commented on the 5th gear at the time – it was more
of a cruising overdrive gear – as a higher top speed could be
achieved in 4th. This might be to do with its ‘brick shape’
and the resulting aerodynamics.
Production ended in Italy in 1972, with some 600,000 manufactured, yet
the 125 proved very popular in countries where Fiats were produced under
licence. In New Zealand they were called the 125T. Egypt, Argentina,
Polski and FSO in Poland amongst others manufactured 125s for years
after they had ceased production in Italy.
Vignale
125 Samantha
The Fiat range have always given great opportunities to the coach builder
and body fabricator. Some are worthy of web pages in their own right.
But on the basis that most will never be seen outside of Italy and the
Alps, I propose to limit discussion to one token example. My apologies
to Moretti, Scioneri, Zagato, Michelotti, Giannini, Savio, Ghia, Touring
Superleggera, and Bertone et al for not including their prolific and
stylish Fiat based designs. But I’m going to choose one that made
it into production with a strong if tortuous UK connection… the
125 Samantha.
Vignale had
produced a series of Fiat based cars from around 1967. For the first
connection, in 1968, Jensen commissioned a design competition in which
the preferred design was given to Vignale for production, before a change
of mind by Jensen switched production back to England. The Samantha
door design was never-the-less retained from the Jensen Interceptor.
For the second connection, several hundred examples of Vignale car designs
were brought into the UK mainly by a London based importer. Fiat UK
serviced these cars through their dealer network by prior arrangement.
The list of imported cars included Vignale bodied versions of the 124
Coupe, 500 Gamine, 850 coupe and Lombardi Grand Prix, as well as some
20 Samanthas.
The 125 Samantha 4 seater coupe was well received here. Despite being
nearly double the price of its donor 125, it had a classic exclusive
appeal yet with standard 125 and 132 components. The Samantha’s
performance was similar to the 125S with a 0-60 time of 12 seconds and
103 mph top speed. As 132 components can still be sourced for these
cars (from Germany and South America in particular), running one is
not completely impractical today. (I did say ‘not completely’!)
132
First launched in May 1972 the 125 replacement was available
in three variants, the 1600, 1800, and Special. The Special was the
first Fiat production saloon to have a wing mirror and triple section
steering column. Options included electronic ignition and a limited
slip diff., yet European motoring reaction was look-warm. Despite its
Twin Cam heart, it is a significantly larger car than the 125 it replaced.
Some of the traditional Italian brio was lacking.
Yet the 132 was a step forwarded in twink history as its engine re-design
consolidated the TC package and layout. In 1972 the push rod block casting
is replaced with a new 80mm bore 1592cc and an 84mm bore 1756cc. In
1974 the face-lifted second series GL and GLS versions include small
adjustments in the head and valve position, and fuel supply. While in
1977, the third series standardised the bore at 84mm for both a 1600
and the new 2 litre engines. A comparison of the top models from each
of the three series on power and weight would be 105bhp/1070kg, 107bhp/
1080kg, 112bhp/1140kg. In other words a fairly modest power to weight
ratio got progressively worse. The later option laden models were heavier
still. From 1979 the 2 litre was also the first Fiat to have fuel injection.
Boosted by sales in Spain the Middle East and South America, the 132
was successful, but in Europe the heavy 132 seemed to be too slow, too
noisy and not frugal enough in comparison to the competition.
Despite several face-lifts and limited editions over some nine years,
the 132 was never a hit in the market here. In 1981 it was withdrawn.
Its final edition, the Bellini, was all black with 14in Cromadora wheels.
131
Mirafiori
This car was the 124 replacement as Fiat’s mid
range saloon. Yet in making the car ‘classical’ as their
publicity brochures claimed, Fiat ensured an immediate visual confusion
with the 132. Nor was it launched in 1974 with a twink engine. The initial
models had side mounted single cam 1297cc and 1585cc engines (based
on the pushrod 124 saloon).
On the plus side the 131s had rack and pinion steering and a McPherson
strut suspension layout (both front and rear). ‘Competent if unspectacular’
was the general impression of the UK press.
131 Abarth Link to model
page
Fiat had already nominated the 131 for competition and prototype stardom.
It is this success that really underlined the car’s potential
and ensured more powerful variants.
There were 400 131 Abarths built for homologation, with special light
weight panels made and assembled by Bertone. The car’s rear suspension
was very similar to the 124 Abarth’s fully independent design.
Much of the Abarth equipment on the car was a natural development from
their 124 Rally experiences.
An exception however was the engine. New for a road going Fiat was the
2-litre twin cam engine, with a 16-valve head developed by Lampredi
(and not the Abarth one available). Carburation was via a single Weber
34 ADF – although this was not used in the competition examples
as they employed a Kugelfischer mechanical injection system from the
car's second full season of competition.
131 Racing/ Sport Link to model
page
The 131 Racing (or Sport in the UK) was the special edition model aimed
at the performance and rally interests in Europe. Paint finishes were
limited to Orange, Black, Metallic Silver or Metallic Dark Grey. The
Racing was also offered in White with blue stripes emulating the Walter
Rohrl rally car – mainly in Germany. The Sport had a different
grill lights and bumper/valence finish, but was otherwise difficult
to spot to the many uninitiated. Of course the Sport/ Racing did not
have the 16-valve head, or twin carbs of the rally car, yet its 2-litre
engine put out a healthy 115bhp@ 5800. One of the Sport’s enduring
claims to twink fame must include the gearbox - gear selections with
the Abarth remote shift and ratios were excellent.
131 SuperMirafiori (Series 3) Link
to model page
During 1981 the final (third) series of 131s were unveiled. The Super
Mirafiori included 1300cc, 1600cc, and 2000cc versions of the Twin Cam.
The 2 litre replaced the Racing/ Sport with a softer sprung four-door
example.
131 SuperMirafiori Volumetric Abarth Link
to model page
A special edition Volumex version was also prepared by Abarth in the
same four-door shell. It was called the ‘Volumetrico’. To
give its full title, the 131 2000 SuperMirafiori Volumetric Abarth.
But I doubt that would even fit on a number plate sized rear badge.
Again apart from the oval exhaust tail pipe and Pirelli Plus One wheels,
you’d find difficulty in spotting this one until it burnt passed.
Mechanical changes were extensive but in keeping with usual fast road
car treatment by Abarth. This left hooker gave massive torque, 140 bhp
DIN @ 3600rpm and a lot more tuning potential. I don’t have any
figures for the ‘Volumetrico’ production numbers. Last time
I looked Tony Castle-Miller had one, and I’ve seen two others
in the UK… about the same number as the competition 131 Rally
Abarths over here.
Lancia
Betas
So much of the Twin Cam story centres around the Lancia
developments that I make no apology for including our Fiat Group ‘brothers’
when necessary. If I had the space to delve into more detail the reasons
would be blatantly apparent. Suffice to say some of the Lancia models
were the champions and prototypes for successful technical evolution
of the Twink designs. So in these circumstances they’re one of
us! (By the way, the SFC constitution allows and demands that we address
“Fiat derivatives”).
After merger between Fiat and Lancia in 1969, one of the first decisions
was to adopt the Twin Cam for Lancia’s next range of cars. The
new Lancias were named ‘Beta’ in honour of Vincenzo Lancia’s
first ever production car.
Beta Saloon
Engine development for the Beta and Fiat 132 occurred in parallel. In
the Beta, however, the engine is transverse driving the front wheels.
Consequently the engine was canted backwards to reduce bonnet height.
And detailed design of the combustion chambers, cams, carbs and inlet
manifold are different in the Lancia engines. All the Betas had 5 speed
boxes and the Berlina saloon was launched with all three capacities
then available in the Twin Cam range – namely 1438cc, 1592cc and
1756cc. Power outputs from the engines were 90 – 100 – 110bhp
@ 6000 rpm and max torque of 11.8 – 13.1 – 14.7mkg @ 3800
– 3200 – 3000rpm respectively. The Beta Berlina was an advanced
and well received success. Perhaps one general adverse comment centred
on the lack of difference in the performance of the large capacity models.
Beta Coupe & Spider
A year later a Beta coupe was produced, using the same engine and components
as the Berlina, but with a shorter wheelbase. The clean lines of the
Beta coupe were complimented with a 10% power increase over the Berlina.
A Beta Spider was also commissioned, designed by Pininfarina and built
by Zagato, with a removable targa top and folding rear panel.
Beta HPE
In 1975 a High Performance Estate (HPE) version of the Beta was announced.
It was a two door five seater car based on the Berlina floor pan with
a rear tail gate. It was really a sports version of the usual estate
cars, aimed at country living, load bearing and family carrying requirements.
Again the car was a commercial success.
Beta Montecarlo/ Scorpion Link
to model page
The Beta Montecarlo had been developed by Fiat along side the X1/9 project
– initially as the X1/8 and later the X1/20. (Biographies from
these days suggest a lot of ‘smoke and mirrors’ around the
Fiat research and development X projects, more for internal than external
consumption – they weren’t always so tightly defined either).
Pininfarina had been involved in the mid engined rear wheel drive two
seater design, and probably envisaged using a V6 engine, derived from
the Lancia Stratos. An Abarth/ Pininfarina prototype, the SE030 had
been entered in the 1972 Giro d’Italia with this configuration.
Oil crisis pressures seem to have favoured the Twin Cam choice, however,
with the transverse Beta power unit and transmission chosen and mid-mounted
– driving the rear wheels.
The car was named after the first Stratos victory in the 1975 Championship,
the prestigious Monte Carlo rally. The Montecarlo was also the first
Twin Cam with a 1995cc capacity – by increasing the stroke of
the engine to 90mm whilst retaining the 84mm bore size. Power was increased
to 120bhp @ 6000rpm. The engine block of these cars is therefore significantly
taller then the 1800 equivalents.
Beta Montecarlo Turbo
Fame was to come for the Montecarlo when Lancia approached Dallara to
design a racing sports car to take on Porsche in the World Championships.
The Montecarlo was the obvious candidate.
While Dallara crafted the chassis, Lancia developed a special twink
of 1426cc (so that it could run as a turbo in the under 2 litre class
- carrying a x1.4 capacity penalty for the turbo). The cylinder block
was from the US spec Beta, with a bore of 82mm and stroke of 67.5mm
with special con rods and pistons. The cylinder head came from the Fiat
Abarth 131, fuel injection from Bosch (mechanical), and turbo from KKK.
Power was quoted at 370bhp @8500rpm, and 35mkg @7000rpm torque in 1979.
I don’t have the turbo output details.
Dallara used a similar design to their racing X1/9 with front and rear
space frames extending from the cabin to carry components, and an all-round
McPherson strut suspension. The bodywork was Kevlar reinforced, being
designed and wind tunnel tested by Pininfarina – who were responsible
for body assembly.
During its development year, 1979, two cars were entered in the Giro
d’italia, finishing first and second before disqualification on
route infringements. They took the World Championships in 1980 and 1981,
although not without massive further development including a 1773cc
twin turbo version. Jolly Club 1.4 litre cars ran with factory support
and gained valuable championship points and class wins in all the championship
years too. Changes in World Endurance Championship regulations and the
advent of the ground effect era meant Lancia moved on to the twink engined
LC1 Sports prototype and we should move on too.
Beta Series 2
The second series of Betas adopted a variant of the 1995cc engine, as
well as introducing a 1297cc Twin Cam instead of the original 1438cc
unit. Subtle changes were introduced to the bodies of the second series
too.
Exports to the States suffered from the restrictive emissions regulations,
where the Montecarlo was called the Scorpion. It even lost out to the
X1/9 in overall performance.
In 1978 electronic ignition was introduced across the range, followed
in 1980 with fuel injection – initially on the Coupe and HPE.
This fuel injection solution has been complimented for its improvements
to the mid range response of these engines, rather than their maximum
power or even economy – both of which tended to suffer a little.
Beta Series 3
The final engine version in the Beta family was the Volumex supercharged
units. This had been tested in a prototype version of the Beta Montecarlo
during 1980 before being announced in the 1982 model ranges. In the
April Turin Show that year Lancia unveiled the Trevi VX and the road
going version of their new rally car, the Group B Lancia 037. During
the summer of 1983, Volumex installations were also available in the
third series Coupe and HPE. By the time that the last production ceased
on the Beta models in 1984, Lancia’s research and testing for
their rally cars was in full swing. And this heralded the next
chapter in twink development.
Lancia 037 Abarth Rally
Lancia had been competing with great success in the World
Sportscar (later Endurance) Championship with a very reliable Beta Montecarlo
Turbo package between 1980 and 1982. The passenger cell of the Montecarlo
was also chosen for their return into world rallying. Entered into Group
B, the 037 (named after the Abarth code number for the project) had
a space frame structure with the supercharged engine placed longitudinally
in mid engined layout. Pininfarina designed the bodywork and the final
choice of engine was the 1995cc twin cam with, Abarth 16 valve head
and twin Webers. Remember a similar engine configuration had been developed
and understood in the131 Abarth Rally for over four years by now. The
competition cars were quoted at 270bhp at 8000rpm during 1982.
But this really underplays the amount of changes that made the 037.
Apart from the bore and stroke of the engine, and the basic passenger
cell, little remained of a standard Montecarlo/ Scorpion.
The competition car was press reviewed in February of 1982 and homologated
in April. But it was in August with the first of the evolution cars
that fuel injection was introduced. Markku Alen finished fourth in that
year’s RAC Rally as the team worked to gain reliability in the
September-November period before the season’s end. A rigorous
weight reduction programme and engine upgrade continued into the new
year. The car now weighed 760kg in comparison to 1020kg of the first
car with power now in excess of 300bhp. The driver line up for 1983
also included Walter Rohrl, who joined Markku Alen and Jean-Claude Andruet.
In 1983 was a season long battle with the Audi Quattros ensued, ending
in Lancia’s first WRC championship since the Stratos years. Any
time the rally events presented reasonably solid surfaces, especially
on tarmac the 037s could beat the Quattros. But the results show very
similar stage times between the rival makes. Biasion and Siviero also
won the ’83 European Driver’s Championship in a 037.
A second evolution of the 037 was prepared for 1984 with an over-bored
(86.4mm x 90mm stroke) 2111cc engine. But the Quattros were quicker,
and Lancia finished runner up in the championship. 1985 followed the
same theme, as the successive revisions in 4 wheel drive technology
allowed the 4WD cars to exploit better grip. The ’85 037 is quoted
at 345bhp and 32mkg @ 4500rpm torque.
By 1985, Lancia had a new generation of rally car in full development
– the Delta S4. I’m going to exclude detailed discussion
of this car, as it was not derived from the Fiat Twin Cam. It wasn’t
really a Delta in anything but name, it was very exotic in its use of
advanced technologies and ultimately led up a blind alley in world rallying
as Group B and Group S were excluded in 1986. It did herald the Delta
Integrale though – see below. Link
to model page.
Argenta
In 1981 Fiat introduced a re-styled 132 called the Argenta.
As the top of the range saloon several new innovations in the Twin Cams
were introduced. For instance the 2 litre variant had electronic injection.
From 1982 these cars were also fitted with electronic ignition (making
them ‘iE’s in badge-speak). These Twin Cams were also the
first to have the new head seal designs and a revised sump with increased
oil capacity. The increasing trend towards diesel power was also reflected
in turbo and non turbo 2,445cc examples delivering 90 & 72bhp.
A special Volumex SX edition of the Argenta even gave 135 bhp at 5500rpm
and pushed the car to 60 in 9.2 seconds. Yet the large saloon was never
a commercial success and was withdrawn in 1985.
Strada/
Ritmo
I always had the impression that Fiat were a little surprised
by the hot hatch revolution in Europe. Perhaps it was just too close
to their own long-standing philosophy for them to spot the differences.
The second thing I couldn’t understand about the late-seventies-into-
eighties era was the pasting that the UK press gave to the Strada (Ritmo
in Europe). It did the job intended.
Strada 105TC Link
to model page
Fiat & Fiat UK seemed very reluctant to market the Strada in Twin
Cam form until relatively late in the GTi day. In 1982 the newly discontinued
75CL three door was fitted with a 1585cc Twin Cam and the Strada 105TC
was born. It had been marketed in Europe for nearly 12 months, having
been announced in May 1981. It was basically a transverse variant on
the 131 1600TC engine, but with bigger valves, increased compression,
and a full flow manifold –although also with a single Weber carb.
As its name suggests, the resulting power output was 105bhp at 6100rpm.
The UK Strada 105TC package included front and rear spoilers, 14inch
Cromadora wheels (with P6 Pirelli tyres in the UK) and an Abarth Scorpion-ed
steering wheel. Improvements to handling and braking were also radical
with a larger clutch, and sump, better oil pump and revised spring and
damper rates. The mark 1 had single headlights, although in 1983 the
mark 2 had a revised grill with twin headlights and electronic ignition.
The mark 2 also benefited from the Strada Abarth anti roll bar and front
spring designs.
Compared with hot hatch rivals, the 105TC lost out in the important
0-60time/ spec/ look/ badge wars of the hottest hatches. 1,790 were
imported into the UK by 1986 when production ceased.
Ritmo Abarth 125TC Link
to model page
Ritmo Abarth 125TC was the second sports version of the Ritmo to appear.
This was the mark 1 105TC with a more powerful engine and further Abarth
rally experience applied. It was presented at the Frankfurt Motor Show
in 1981 and production began later in the year. Abarth stiffened the
shell and changed suspension details and brakes. The interior was also
better equipped. It is a cracking little car.
Strada Abarth 130TC Link
to model page
But the Golf GTi challenged Fiat on their traditional ‘home turf’.
Major modifications and a comprehensive styling package were at last
on the agenda. The Golf was to be beaten on performance by the third
in the trio of Strada hot hatches – the Abarth 130TC.
I’d been looking for another saloon to put true driving performance
first. And at last it had arrived. The mark 1 Strada Abarth 130TC had
a grey check interior while the mark 2 was black with the Fiat 5 bar
logo in a red diagonal pattern. They shared twin Solex or Weber 40mm
carbs, ZF gearbox, ventilated front discs, Recaro racing front seats
and a stronger suspension – especially at the rear. The 130TC
was also slightly lighter than the 125TC despite being larger.
The twin carbs made the 130TC fussier than the other hot hatches (with
their injection systems) and it needed more specialist maintenance support.
Just over 700 Strada Abarths were imported so it is a scarce and desirable
Fiat.
The Strada Abarth delivered what it promised “(it)…goes
right to the top of the hot hatch league with no ifs or buts. It goes
it stops and it grips. And I want one.” Car and Car Conversions.
Morgan
From 1981 Morgan
used the 1585cc engine and gearbox from the 131 as it was capable of
passing the overseas emissions requirements in some of their key export
markets. In 1984 the 1600 engine was substituted with the 131 1995cc
unit - in this case from the Argenta. It had a Bosch fuel injection
system and delivered a respectable 130bhp max. This option remained
on the Morgan catalogue until 1986.
Regata
The Regata was effectively a longer wheelbase Strada
with a boot. Initially it was available with a carb, but later the 1585cc
engine was supplied with single point fuel injection. The Weekend estate
version proved more popular as a spacious and competent performer in
the estate sector. Sales in the UK never approached the popularity of
the 131 (131 worldwide sales totaled over 1.7 million) – which
in size and function it replaced. Its floorpan was used for the Lancia
Prisma too.
Lancia
Thema
At this point another Fiat Group car should be added
as TC evolution stepped forward. The Lancia Type 4 Project model was
called the Thema. Announced in October 1984, it was powered by a further
development of the Twin Cam. As it was equipped with counter rotating
‘Lanchester’ balancer shafts. A turbo and a normally aspirated
version of the 1995cc-twin cam was on offer. The turbo version had a
Garrett exhaust driven turbo, Bosch Jetronic fuel injection and Marelli
electronic ignition. The normally aspirated version was also equipped
with balancer shafts after number 2000 had been made.
The transverse
engines are tilted forward 20 degrees in the Thema to reduce the height
of the bonnet line.
In 1988 a second series of the Thema introduced 16 valve versions for
both normally aspirated and turbo options. The power outputs were 150bhp
@6000rpm and 185bhp @5500rpm respectively. An 8-valve option was retained
producing 119bhp @5250rpm.
Croma
I offer a thought about the ‘sporty’ nature
of the 2-litre twin cam. It is a lively and torquey design rather than
lazy or frugal. The engine has a short stroke and wide bore so they
rev and breathe well. Consequently they don’t make for easy or
relaxed cruising. In comparison with Ford Europe, Fiat had stopped production
of their V6 engine with the 130 Coupe and Saloon. Yet Ford retained
their V6 for the Granada and 3 litre Capris. Like Fiat, Ford have struggled
at times to provide an effective fleet sales executive car. But they
retained a larger engine which made selling in this sector a lot easier.
Aside from kudos and badge snobbery issues, is this part of the reason
why Fiat have consistently struggled in the large car sector? It's even
more curious when Lancia used a version of the Alfa V6 in the Lancia
version of the joint venture project. Was Fiat's large saloon ever really
expected to compete against the Lancia Thema on equal terms?
The Croma was Fiat’s attempt to occupy a niche in the large car
market in the mid-eighties. Born of a joint venture (the Type 4 Project)
with Lancia, Saab and Alfa Romeo, they aimed to use a common platform
and floorpan and offer four different models - one for each manufacturer.
Compared to the Alfa 164, Lancia Thema V6, and Saab 9000, the Croma
was definitely a budget large car. And it’s 155bhp-turbo version
Twin Cam in particular has found its way into many SFC project cars!
It remains, however, under rated.
The Croma also offers a link with the earlier 8 valve TC engine technology
and the Fiat/Lancia experience in eighties turbo design. It used a Garrett
turbo charger, Bosch injection and electronic engine management. The
Croma offered good value in all its 1800 and 2 litre variants. But did
not sell in great numbers here. It was a better car than the write-ups
made out. Its trim levels and build quality were an improvement on comparable
Fiat saloons of the day - yet in this important executive area it probably
wouldn't compare well with the Croma's partners in the Type 4 project.
The UK press dubbed these cars as 'Euro Bland'. When compared with other
manufacturer's 2 litre variants at the time I find this unjust. Yes
these four cars behave quite similarly - as you might expect - but they
were well up to the standards of their time. The Croma gave huge value
and reliable second hand motoring as a family car, the Turbo's give
you a super Grand Tourer.
Meanwhile Lancia
were about to take the turbo-charged 2 litre Thema engine onto a 16-valve
level, and apply it to their mid range saloon with world shaking consequences.
The 2 litre Twink engine was about to come to maturity at a level of
performance that would have both shocked and pleased Lampredi, I'm sure.
Lancia
Delta and Integrale
The first Deltas were produced in the final months of
the seventies, with single overhead cam power. Three years later a 1585cc
Twin Cam was introduced to the range at roughly the same time as the
Strada 105TC was being imported to the UK. The Delta 1600GT delivered
its 105bhp at 5800 revs.
Delta HF Turbo
In 1984 the Delta HF Turbo became the first twink production model to
be fitted with a turbo (albeit only months ahead of the Uno Turbo).
Lancia had made good use of their competition experience with turbos
from the Beta Montecarlo and LC1 race car programmes. The HF Delta mechanicals
have proved enduringly reliable and delivered 130bhp at 5600rpm. Curiously
enough this was the same maximum power as the Strada 130TC. As a motorway
cruiser the Delta HF is a little more refined, but for fast road work
the 130TC had the edge. However, the hot hatch rule book was about to
be re-written.
Delta HF Turbo iE
In 1985 both Deltas models were given fuel injection, which increased
their maximum power to 108 and 140bhp. The torque curve was much improved,
and the HF Turbo was much more responsive. It is a shame these cars
were so rust prone, few good examples remain. Again it had a good sized
intercooler, (double the Uno Turbo’s) and the 1600 engine size
gives it flexibility and tractability in an engine block that’s
significantly smaller than the 2 litre. Consequently many of SFC performance
conversions have this engine. Its Weber-Marelli engine management is
also fully re-mappable and doesn’t use an air corrector assembly
to control pressure in the injection plenum chamber – the map
being able to correct for plenum pressure variations itself. It’s
an excellent example of eighties turbo engineering.
Delta HF4WD
A third model Delta was introduced in 1986 with 4 wheel drive, balance
shafts and a 1995cc capacity. Along with the Lancia Thema, these engine
designs really show the main elements of Twin Cam development for the
next decade. The Delta HF4WD produced 165bhp.
During this year the World Rally Championship regulations were revised,
on safety grounds. This effectively excluded Group B and left the championship
to production based Group A cars, 5000 of which had to be produced for
homologation. The Delta HF4WD suited this purpose well. Its first win
was on the Monte Carlo Rally in 1987 and it took the World Rally Championship
in its first season, 1987.
Delta HF Integrale
For 1988 development continued and the Delta HF Integrale appeared for
the first time. The transmission brake system and power output were
all uprated. An initial run of 5000 was planned for homologation, but
popularity ensured that production lines stayed open. The 8-valve engine
developed 185bhp at 5300rpm (31mkg torque at 2500rpm). Homologation
had delayed the use of the first Integrale in WRC competition and the
Delta 4WD was used for the first few rallies.
Delta HF Integrale 16 valve
In 1989 the 16 valve 200bhp engine was introduced, and the Delta Integrale
16v proved to be as effective on the roads as on the rally courses.
Lancia had another winner.
A different turbo charger and management package increased maximum power
to 200bhp in the road going version.
Delta HF Integrale 16 valve (Evoluzione 1)
The final version of the Delta, the Delta HF Integrale, was introduced
in September 1991. Again revisions were aimed at maintaining rally competitiveness
with track, damper and brake improvements for the 1992 championship.
The road going version was rated at 210bhp and had different wheels
rear spoiler and interior.
Just to add some confusion to the mix the cars were never badged as
‘Evoluzione’. The Evo 1 was so described at the Chivasso
factory to help tell it apart but never appeared in the sales literature.
If we stay with the Chivasso definition then the 1991 Delta HF Integrale
(the second 16-valve series) was the Evoluzione 1.
Delta HF
Integrale 16 valve (Evoluzione 2)
The Evo 2 had
only cosmetic changes with high back Recaros, 16inch wheels and air
conditioning. Production ceased in 1994. By then no less than 10 limited
editions had also been released to the UK culminating in the Final Edition
Evo 2. Excluding the special editions, all HF Integrales sold in the
UK were also badged ‘Montecarlo’ – like the Beta,
for the Stratos and Integrale wins on this prestigious rally.
Maggiora
and Chivasso
Formed in 1925
under Arturo Maggiora as a high quality car body maker - a coach builder
or 'Carrozzeria'. Their work has graced many Fiat and Lancia cars like
the early Fiat 1100 Viotti Giardiniettas and the Lancia Flaminia Tourers.
The company was grown and extended, with several Abarth and Cisitalia
bodies produced.
Diversification
into many body forms continued - including two and four wheel vehicles
as well as commercial and light commercial projects. By the mid-eighties,
these included the De Tomosa Pantera, van and pickup versions of the
Panda, sub assemblies for several commercial vans and Uno van bodies.
In 1991 Maggiora
merged with Sanmarco and Lamier to form IRMA SpA - later a major supplier
to the Ducato range. In 1992 Maggiora SRL was formed and took over a
major part of the old Lancia Chivasso factory north of Turin.
From October
1992 they undertook production of the Delta Integrale Evoluzione. The
last deliveries of the Evoluzione were completed in 1994. They had a
party there with the inaugural meet of the Italian Delta Integrale Owners
Club - effectively to toast the end of production for the great car.
At the same time the 'Puntograle' was shown for the first time. Gob
smackingly good, dressed in all gold, images of this car have gone around
the world and featured in most car magazines.
From the demise
of the Integrale, most of the production capacity was taken up by the
Barchetta - at around 50 bodies a day. Some complete cars were produced
here too. Including the Kappa Coupe. In addition many design studies
and prototypes are still produced at Chivasso. More recently these have
included soft top Unos and Cinquecentos, special Integrales and Barchetta
Coupes.
Punto
Grama 2 - the Puntograle
Into the 1999
-2000 era Maggiora also built the Punto Rally and S1600. But we return
to the Punto Mk1 and 4 wheel drive with a difference! The Puntograle
is painted in metallic gold paint and looks fantastic. The car's floor
pan is made from the Dedra Integrale - with engine and running gear
to match. It was first seen in 1994 - and shown at the inaugural party
of the Italian Integrale Owners Club in the Chivasso Works. The party
was held to celebrate the last batch of Delta Integrales on their way
to Japan and the passing of the Integrale Evo2 out of production and
into history!
The Dedra floor
pan is too long for the Punto. Yet to accommodate the Integrale running
gear and keep the proportions and rigidity of the original Punto, the
additional length has been disguised with extended front and rear valances.
It is done very well. The 17inch Delta Integrale wheels distract the
viewer's attention from the enormous valences - they are in proportion
with the wheels, while the wheel arch extensions are barely apparent
but again of more significant scale.
Twinks
in Rallying - World Rally Championship x9
This is a fitting
moment to pay tribute to the competition efforts of the Fiat and Lancia
teams. In 1991 it was Lancia’s intention to defend their World
Title again. To this end an Evoluzione 2 was planned with power, suspension,
brake and wheel upgrades. But it would miss homologation for the 1991
season. They used the previous spec. car to win the last championship
in a very close fight with Toyota. This should have brought the Integrale’s
competitive career to an end as Lancia did not officially contest the
next season. But Martini sponsorship, and driver contracts were in place,
so with Abarth support the Jolly Club entered the cars - and took the
championship again.
The Deltas had just completed 5 successive championship wins to complete
a tremendous series of 9 WRC manufacturer wins by Twin Cam engined Fiat/Lancias.
This was achieved between 1976 and 1992… (x4 Integrale wins, x1
Delta 4WD win, x1 Lancia 037 win, x3 131 Abarth wins). It also makes
their competition departments, along with Abarth, the best in the world
in this era – with no ‘ifs’ or ‘buts’!
Alfa
164
The 2 litre
Turbo of the 164 had a version of the Lancia twink when it was introduced
in 1988. The output of this engine was raised to 171bhp - about 6 bhp
more than the equivalent Lancia engine - simply by the omission of balancer
shafts. This turbo version of the 164 had a top speed of 139mph and
0-60 time of just over 7 seconds. The 164 turbo can be identified from
its additional driving lights and additional front valance air intakes
- distinguishing it from the more pedestrian versions of the 164. In
1991 the 164 turbo was superceded with the Alfa 2 litre V6 Turbo version.
Tipo
The Tipo was launched in 1989. The 10-model range was
an immediate success with over 1 million produced within 32 months at
Cassino. The engine range includes two sohc versions, a 1.7 diesel and
1.9 turbo diesel, a 1756cc TC and the last a 1995cc 16-valve TC.
In 1990 a 1756cc Twin Cam (called the GT in the UK) was introduced with
injection and balance shafts. It had excellent free revving attributes
and was notably smoother. There are examples in the club, although Fiat
UK say they were not officially marketed here, you could get right hand
drive versions.
From October 1991 the 1995cc iE was introduced. It had an ABS and Recaro
interior option, stiffer suspension and disc brakes all round. The 16
valve Tipo is a greatly under-rated car. Its engine delivered 148bhp
and 18mkg max torque, giving a 0-60 of 8.3 seconds. The unit is virtually
identical to the Lancia Thema, with a 20-degree forward inclination.
The main criticism of this car is its relatively late appearance in
the UK. Only some 700 cars were imported before production ceased. If
the 16-valve had been available sooner after its launch, I suspect many
more would have been bought here. It has a broad torque curve but is
not as free revving as some of its predecessors. Although getting rid
of some of the strangulation is relatively easy. One mod frequently
mentioned is the conversion to a cone air filter. It is highly advisable
to retain the standard ducting and airbox, locating the cone in the
near side wheel arch to keep interior induction noise to normal levels.
All the outer panels of the Tipo were galvanised, and ten years on they
look good. Once the Bravo/a get to this age too, I think we might see
Fiat’s adverse reputation for rust and build quality quietly die
in the corner somewhere.
From mid 1993 all the Tipos (and Tempras) had a revised front grill
with narrower headlights and improved crash protection. All models also
got central locking and electric windows as standard. The Tipos were
discontinued at the end of 1995 with the introduction of the Brava/o
range.
Is it heresy to admit I sometimes use my Sedicivalvole as a tow car?
It’s mid range torque and spacious interior (with the back seats
down) makes it very useful.
With the Tipo and Integrale under bonnet space is at a premium. Am I
just getting old or is the idea of testing and replacing a component
you can’t even see let alone touch - from any angle - making this
bonnet place a no go area? Getting them up on hydraulic ramps helps
- like tropical vegetation it thins out a bit underneath the photosynthesizing
layers.
Link
to model page.
Tempra
In 1990 the Tempra came to the UK with a broad range of models including
the 1.8iE SX Twin Cam. Unfortunately the SX had digital instruments.
The Tempra estate was introduced a year later equipped with a horizontally
split tailgate. All the Tempras were four door saloons, except for the
5 door estate. Fiat repeated a trick they’d used with the Strada
and Regata – basing the saloon on the initial hatchback design
and floor pan. This floor pan was also the basis of the Lancia Dedra.
The clean lined Dedra was not deigned in–house like the Tempra,
but by IDEA, the Italian design house.
The Tempra was not popular here although they make thoroughly attractive
work-horses. Club members report that the ride and handling wasn’t
as good as the Tipo. From early 1993 the top Tempra became a 2 litre
iE with disc brakes all round. The Tempra was discontinued in 1996.
Lancia
Dedra
The Tipo 16v,
Tempra and Dedra all benefited from the latest in engine management
and injection technology within the Group. On launch two of the Dedras
three engine options were twinks. Both these models use the newly available
Weber IAW system to control ignition and fueling. The Dedra also has
a self diagnostic facility, and a 'get you home' facility to compensate
for defective engine sensors.
It also has
a good drag coefficient (Cx0.29) and a top speed over 125mph. By 1990
a further two models were added to the range, the turbo having Viscodrive
traction control and the Dedra Integrale being equipped with 4 wheel
drive. The integrale version carries the same components as the turbo,
but 15bhp more (180bhp). These are seriously underestimated, and often
under priced saloons.
In 1994 the
turbo version was discontinued, and a new 1.8litre 16-valve introduced,
cutting the range offered to three engine variants - 1.6,1.8 and integrale.
Production continued until 1998.
Alfa
155
Introduced
in 1992, partly to homologate the racing version of the model - the
155 GTA - for the Italian Touring Car Championship. This was the Alfa
155 Q4 with a turbocharged 186bhp twink - based on the Lancia Integrale.
The 'Q4' refers to the 4 wheel drive system also borrowed from the Integrale
- with three differentials. All this adds another 200kg to the weight
of a standard Alfa 155 Twin Spark.
I think we
could safely describe this car as 'trick'. It also had electronically
controlled suspension and four way six sensor ABS. It was built between
1992 and 1993, and just over 2,700 were made. A couple of handfuls were
delivered in the UK (left hand drive of course).
It worked -
the race car took 17 outright wins from the 20 round Championship -
driven by Nicola Larini.
The carbon
fibre bodied race car (155GTA Superturismo) weighed 1050kg, had 400bhp
on tap, and had a fully programmable suspension /torque split capability
so it could all be changed for each race track. 164 rear axle geometry
was adopted. Why do I get the idea that if it were allowed back into
the championship in the next season it would have done the same again?
New
Delta
In 1993 Lancia
launched a new hatchback model to replace the Delta. It was called the
New Delta. The mistake was that it hadn't any major body or engineering
connections with the previous Delta.
(Yes, I know
now it may beggar belief but Lancia executives must have thought they
could get away with this one... you take one of the World's all time
great hatchbacks - an icon of the age..... and you bin it - all but
the name, and you presumably think we the dumb car buying public won't
spot the difference... and will go out and buy the new one just because
its called a Delta. Well Lancia were within 5 years of withdrawing from
the UK and I think this decision put many screws all the handles and
several coats of varnish on the coffin!)
The new Delta
was actually a cut down version of the Dedra - in looks and engineering
approach. The package was extensively re-engineered - but for the ultimate
test of performance style and iconography can you tell me the last time
you saw one? Now can you tell me what was the colour of the last Integrale
you saw and when you saw it?
The final edition
of this new Delta was the HPE Evo 500. The HPE was made from 1995, and
has a turbocharged 1995cc twink putting out 193bhp. While the other
versions of this car received the new version twin cams in 1996, the
HPE retained the four cylinder Lampredi 1995cc engine until Lancia withdrew
from the UK in 1998. It holds the distinction of being the last Fiat
Group car to have a Lampredi based twink in the world. In 1999 the new
Delta was discontinued. There were no owners club parties at the factory
for this Delta.
Coupe
Some cars are just born classics - before they roll off
the production line. Looks and performance combined also make for a
very special Sporting Fiat! And here we have one of the all time best.
The Tipo floor pan was the basis for the Coupe. And the builders were
Pininfarina so the car's build quality is good too. Galvanised and well
painted, the bodywork looks good ten years from new. You will need to
check for niggling relay problems, and look after/ replace suspension
bushes and wishbones - even perhaps replace brakes and a turbo exhaust
manifold, but overall these cars are viceless. You will only need to
budget to maintain a performance car to be rewarded with reliability
and huge enjoyment.
The Coupe is
also a high watermark in the Lampredi Twin Cam development. Because
half way through the Coupe's production life, the 4 cylinder twink was
substituted with the new 5 cylinder engine.
This engine
is not a twink with an extra cylinder. The engine's characteristics
and parameters are quite different. It is a different design, with a
more refined, longer stroke engine. Its built for cruising efficiency
and economy before performance. That's not to say the 5 pot lacks poke
- it just does the other things a bit better.
Traction control is installed on the 4 cylinder turbo option, and traction
control with ABS is standard on both the 5 cylinder models and it is
needed! But when driven on the limit, the traction control can’t
cure all the front wheel drive cornering antics. The 5 cylinders are
more economical and a have a smoother engine. For modification the 4
cylinder turbo gains years of development and tuning experience from
the Lancia Integrale. The 'LE' Turbo is the one Coupe special edition,
with 6 speed box, different wheels and enhanced trim.
The Coupe is
a Grand Touring cruiser of the classic coupe variety, with great looks,
good build quality and is a performance bargain. Thanks again to badge
snobbery, you can appreciate quality engineering at great value. Production
ceased in 2000. I'm still in shock - as four years later we have nothing
remotely like a replacement. Here are some Coupe milestones…
1995-96 4 cylinder 2.0 litre 16 valve with turbo option arrived in UK
1996 Late in the year 2.0 litre, 5 cylinder was introduced with minor
improvements
1996 2.0 litre 5 cylinder turbo option.
1998 Mid year Turbo Plus limited edition introduced with 6 speed box,
push button starter body mods
2000 Coupe withdrawn.
Link
to model page.
Lancia
Kappa
The Kappa was
the replacement for the Lancia Thema. It had a large berlina aimed at
the upper end of the market with four doors and air conditioning. Its
interior was well finished. Five power unit options were available.
The most powerful of these was the 1995cc Turbo Twink - with balancer
shafts - that delivered 205bhp DIN. Ventilated front discs and ABS were
standard. The suspension was a refined version of the Thema. It has
Macpherson struts and anti roll bars front and rear, with lower wishbones
at the front and trailing arms with transverse links at the rear. The
Coupe's Visco-drive traction control helps prevent torque steer. In
1996 the Kappa SW estate version was introduced.
In 1995 Bertone
showed the Kyak - a coupe based on this floor pan and components at
Geneva. In this case the 5 cylinder twink was the power source. But
by 1997 Lancia produced their own Kappa Coupe with a 120mm shorter floorpan.
This coupe offers unique 16 inch alloys and adjustable Recaro seats.
In 1998 the
4 cylinder Twink was dropped from the Kappa range in favour of the 5
cylinder engine.
A much lighter
version of the Kappa Saloon is presently to be seen in the Euro Italia
race series, owned and run by Trevor Nicosia.
Barchetta
The Barchetta
made its debut at the 1995 Geneva Motor Show. Fiat's response to the
upsurge in soft top demand - led by the growing sales of the Mazda MX5
was the Barchetta. It is based on a shortened version of the Punto floor
pan. And it also boasts an all new twin cam engine design.
The engine
has the familiar iron block and alloy head, but Fiat had taken the time
to look carefully at the features and performance of the MX5 and produced
a tractable and sporty alternative. They acquired a Japanese company
with variable valve technology, to produce the Barchetta's variator.
This design has caused problems due to over-close tolerances and engine
oil carbon fouling on the early Barchettas.
But the nearly
square 1747cc, dohc 16V unit with 130bhp and 121lbs/ft of torque is
a drivers delight. The engine is compact and features a stainless steel
4-2-1 exhaust manifold, piston crown oil cooling jets, forged steel
conrods and self adjusting hydraulic tappets too.
In 2003 production
problems suspended deliveries, but from Summer 2004 the Barchetta is
available again.
Link
to model page.
Punto
Sporting and the 1242cc 16-valve twin cam
Another great
Fiat twin cam was launched with the first major revisions to the Punto
in 1997 (although it was used in the Lancia Y a few months before).
The Punto had then been in production for 4 years. The new engine replaced
the original 1.6 litre Cabrio and Sporting models and was an immediate
hit. Sporting Puntos now not only looked and sounded good - but also
had true Sporting power and poise to match. These are great little cars
because of their engine and revised rear suspension.
This 1242cc
16 valve is a physically small engine. Even so it's a tight fit in the
Punto's engine bay. It was the first twin cam FIRE engine as well. All
the previous engines to go through the Fiat FIRE process were single
cammed. Perhaps we should pause for a list of them. The FIRE process
stands for Fully Integrated Robotised Engine.
|
|
|
|
|
1983 |
|
09/84 Y10, then Uno, Panda |
|
1985 |
|
|
|
1988-9 |
|
09/89
Uno,
Punto,
Cinq Sporting
|
|
1992 |
|
|
|
1996-7 |
|
03/97
Lancia Y,
07/97
Punto
|
|
|
|
|
.
The process
has changed over time to include all the main elements of engine design,
casting and manufacture, as well as automated assembly. In this case
particular attention was paid to the block size and weight. High quality
cast iron and casting methods have allowed thinner walled engine blocks
and more weight saving throughout the FIRE range. The 1242cc also
has 20 degree inclined valves to reduce the head width required. The
toothed cambelt also drives only one cam directly. As in the Barchetta
engine the second cam is gear driven - allowing the use of Fiat's
variable valve timing system in the Barchetta.
The engine
punches well above its capacity in performance terms - delivering 86bhp
at 6000rpm and 83 lbs/ft of torque at 4500rpm. In the Punto it also
includes the now mandatory hydraulic tappets and multipoint injection
too.
From now one
all the medium sized Fiats will have this engine in their range. Its
too good not to be the first small engine choice. It lifted the Punto
Sporting towards the performance levels of the standard Punto GT turbo.
Bravo/ Brava
Utterly reliable, well thought through and oozing Italian
styling – especially in the second revised body shape and a stylish
match against any of the alternatives. The day will soon dawn, for the
second hand market, when this car's build quality and lack of corrosion
will be appreciated. What this car has extra of is that illusive style
factor.
The range includes
a choice of the new twinks - the top of the range being the HGT 20 valve
from the Coupe. The 5 cylinder engine has an impressive number of developments
in a really well sorted car. Balancer shafts, variable valve timing,
hydraulic tappets, twin injectors. This new 2.0 litre engine size is
1998cc with 82mm bore and 75.7mm stroke, and Max power is 147bhp@ 6100rpm
with 137lbsft @4500rpm torque. This gives 130mph top speed 0-60 8.2sec.
The Bravo HGT is quiet, sophisticated and speedy.
Marea
My first reaction to this car was ‘no way does
this just feel like a bigger Brava’. The ride and drive are too
different. And the Marea is no poor relation – of course it out
lived the Bravas too.
The 2.4 litre 5 cylinder 150bhp version is a deceptive family car (which
it shares with the Coupe). The engine is powerful enough to upset the
car mid corner, and dispose of any rolling road blocks on your local
A road. 0-60 time is a shade under 9 seconds and the top speed about
130mph. New I expect many would opt for the more frugal diesel or 1.6/1.8/2.0
4 cylinder TC. From 1999 the 105 range also got the new JTD diesels.
But this Marea is going to be a used car bargain where you’re
most likely to encounter the grey or blue 1.8 ELX. Watch for the costly
major services at 60-72k (as with all the TC Fiats). It’s well
equipped and finished with quality. Later cars have standard air conditioning
and ABS. Yet parked on anyone’s drive will look docile enough.
I’m looking at the Marea like this really to say Fiat has an excellent
family saloon. Is it destined to remain another of Fiat’s well
kept secrets?
The estate car, the Marea Weekend is one of the top towing cars that
I’ve driven. Its load carrying and tow car potential is enormous
and its selling at 20% discount on the equivalent used estate/ tow car
market leaders. I really can’t separate this car’s towing
performance from the 406 Peugeot.
Stilo
The Stilo has
replaced the Bravo and Brava. Stilos have a lot to live up to. Again
the economics of mass production has decreed the demise of the Marea
at the same time.
What does the
Stilo have to offer in the Twink History context? Is this an Argenta
or a Tipo in our history of Fiat Twinks? We at SFC are getting mixed
messages about this car. The good messages are qualified, and the bad
ones follow a theme of not sporting enough or un-italian. Well perhaps
its too early to tell. Of course I don't need to say much about treating
Abarth as just another level of trim.
The Stilo engine
range is a summary of the best twinks Fiat has to offer - with the latest
turbo diesel to come, and its the new turbo diesel that looks like it
can provide the missing performance edge the best.
So Fiat have
some of the class leaders in engines for you to choose from. For the
UK there are 5 engine options. These include a drive by wire system,
so some of the usual pedal connections to the under-bonnet orchestra
are missing. The whole noise thing is heavily damped in the Stilo -
almost eliminated in the cabin.
Perhaps we
have reached a point were maturity and global competition in smooth
quiet driving has finally won out over performance and driver feel?
Is this the epitaph for the passion and performance first instincts
at Fiat? I would certainly have guessed that this Stilo was built in
Northern Europe - an MG perhaps or VW Group car - from sitting inside.
I wonder what the Italian designers and workers think of this range?
Are Fiat about to embark on an electronic aid extravaganza?
But this is
a brief history of engines first, not body shells and markets. And the
family of new generation twin cams are all represented here.
All the new
generation of Fiat Twinks are represented in the Stilo range. There
is one of the turbo diesels on offer here, the latest turbo diesel,
with a Garret turbo charger and intercooler accompanying Fiat's Unijet
common rail injection system. This one can really be persuaded to get
going with the right boost, chip and injectors. But for now it is merely
one of the best diesels around. In performance terms this might herald
the dawning of a new non-petrol era.
The 2.4 20 valve
Abarth delivers its 170bhp with little fuss. From the Brava HGTs and
Marea we know this is about the power limit from this engine before
its miles per gallon figures start to plummet. A viceless, smooth 5
pot, with the established long service interval. But I could never call
this car a hot hatch. Because it isn't. Most of the extra horses are
absorbed pushing around the car's extra weight.
As with the 2.4
litre, the 1.6 16v and 1.8 16v engines twin cams have been developed
with space economy and weight saving in mind. All benefit from the variable
valve technology/ hydraulic tappet design pioneered by Fiat in the nineties.
They are well established, and familiar to the Fiat dealerships so maintenance
should not now be a problem. Remember to keep up the oil changes when
the warranty expires.
The excellent
lightweight FIRE 1.2 16-valve was first introduced during 1996 with
the Punto Sporting - as I have already mentioned. It has been an unqualified
success to date. I would suggest, however that the Stilo is a much heavier
vehicle and I'd like to know how the two get on together from any owners.
So in the Stilo
the family of twin cams that followed on from Lampredi's original are
all present and very correct. Now we only need more variants to show
off their real potentials!
Today
Fiat's competition
efforts - through saloon and rally cars appear to have come full circle.
At last there is some stability and continuity again. N.technology,
based at Chivasso, is the heir to the Alfa, Lancia/Abarth and Fiat/Abarth
competition genes. More importantly there is again a high level acknowledgement
of the role competition and motorsport can play in re-writing Fiat Group's
place in the world.
Perhaps they
put a little too much emphasis on the role of modern electronics systems
for my more purist leanings. But it is a start. I can't claim there's
a direct bloodline back to the Abarths of old. But I could be persuaded.
I want to be persuaded. There is a level of winning excellence being
built in N.technology again.
The Fiat Super
1600 Rally Class entry - the Punto Rally Abarth
- is entering its fourth full season. Complaints about its tarmac dominating
potential filter through the rally web pages - along the lines of 'if
I want to win I have to be as fast as the Puntos' - once more a Fiat
is the competition benchmark. I look forward to correcting the droves
of journalists who will bracket up this car and its drivers with the
WRC winning 131 Abarth and talk as though nothing lies in between (forgetting
all the Lancia based rally victories come from the same teams). Yes
the passion for motorsport in Italy runs deep and demands participation
of Fiat.
But have Fiat
understood yet WHY you must grab the right headlines with cool looking,
attention grabbing, powerful cars? And that winning keeps you up there
in the car celebrity spotlight? And the change in mind set that has
to link the different looks and fast options that turn mass production
into an owner's very own aspiration? This time are they going to understanding
the (brand) value of building dreams and connecting to young aspiring
drivers is not just about the tiny minority who will actually participate
in motorsport, but the millions who want to dream of owning 'cool' cars.
The reason why Fiat could never square this circle in the past is because
they've never really believed it. Engineers can have a big mental block
about what their customers actually buy when they buy a car. Fiat have
a mindset as well as a marketing problem.
Would they throw
away another world icon like the Delta... again.... because they are
programmed to make something (anything) else new now? It is deeply frustrating
to see such rare opportunities lost. So would they do it again? Well
first they will have to make the chance.
Yesterday
What would my
favourite Twink be? Well that's just an impossible question. You must
understand we still have the rights to modify our road stallions in
the UK too. I think careful re-reading of the text would give you more
than a few clues.
Of the competition
cars I've driven the 037 stands out above the rest. I was priveleged
to be loaned one for a day when they were in their prime - with the
competition rev limit available. For a reminder of what competition
cars are like in normal life - a car that always raised my pulse to
know it was on the drive - I'd have to say the 130TC and 125TC Abarths.
For grand touring speed and style, the Coupe - the 5 pot turbo please.
As the ultimate Twink Icon it has to be the Delta Integrale, first of
the 16-valves perhaps. For the biggest lost opportunity, I'd say the
SpiderEuropa Volumex - its almost criminal that so few of these were
produced. The purest of the classics? For me it would be a French Blue
124 AC with the 1600cc engine and five speed box. It needs the bigger
engine, and nothing much else.
I've just stumbled
on my own definition of what makes the great Fiat twinks great. They
all invite and reward passion in their driving. They raise the expectation
and pulse rate. My life is better knowing they sit on my drive or in
my garage. Fiats deliver this with huge value too. Lampredi understood
the heart of a great car is its engine. And the soul of the engine is
its performance. This is after all the Ferrari philosophy. He brought
this into Fiat and drove it into their designs from the engine outwards.
This sort of thing is easily hidden from the run-of -the-mill owner.
The engine bay is not a place for most owners. For them the car is viewed
as status symbol or just to get from one place to another. It doesn't
need too much thought, or too long a look beneath the surface. What
they miss!
Towards
Tomorrow
A long time ago I remember one of my Economics professors
commenting on macro economic policy “In Government you can usually
get your first wish in implementing policy,” he said, “but
it always comes with a price ticket. Your second and third wishes not
only have a tendency to get more expensive but they also get in each
others way.”
The point is about how everything is connected. “What goes around,
comes around” is the American saying – ultimately you pay
the price.
So the Fiat Group now includes Alfa Romeo. Another proud Italian company
with a great history and a fine motor pedigree. I do hope they can avoid
following the British car industry into near-oblivion, and avoid the
same mistakes. When talk of keeping the British Industry British owned,
and saving British jobs, and buying British followed each lightly popular
launch of a mediocre car - and then sales down-turn. Periodically mergers
followed on. These were mergers out of desperation, not from a clear
strategy. Talk of scale economies, synergy and cuts. Their first wish
was to stay afloat – and keep a British Institution. Strange choices
followed mergers, borne more of power struggles within (for example
to concentrate on making lesser known Triumph sport cars rather than
MG).
It is difficult to make profits with so many surplus cars being produced
in the world. Without profits you cannot generate the investment to
design and deliver new models. Car Industry profits today come from
getting your whole act together; great cars, great marketing, great
support, great value, great volumes, great margins. But this industry
will always be about great cars first and it is very competitive –
there are always other great cars out there.
My heart is
for Fiat, my head says they’ve yet to cross this Rubicon.
What has all this to do with the twink engine? Well looking back I see
the twink as an evolutionary success story. If anything the pace of
successful innovation has quickened in the last decade. The technologies
are applied in well engineered forms. The spirit and intention behind
Lampredi’s vision lives on in the best of them. While they can
craft cars like the Coupe and Bravo HGT there’s nothing wrong
with their engineering spirit. Yet the Punto is the money-maker. I sense
a hesitation, a loss of confidence even, in Fiat about the twink future.
I’d like to say the future looks like more of the same, more great
driving, interesting motor sport, competitive cars, classic road runners
from more new, Twin Cam, petrol Fiats. I hope so.
MT December 2003
Bibliography
I’d like to thank all the SFC helpers who have contributed to
this web page with advice and notes. Much of the information has been
gathered from Fiat and Lancia model brochures and Fiat press releases
(to a depth of feet rather than inches around my PC table at the moment).
And in particular to John Eglington, who maintains SFC’s Archive.
General Magazine
and Newspaper Article Sources
1. Motor Magazine, Competition results Regulations and Legislative Bodies,
entry, cars and drivers, progress details
2. Autocar Magazine, Haymarket Motoring Publications Ltd, England, UK
model releases and commentary
3. Autosport, ,England Competition results Regulations and Legislative
Bodies, entry, cars and drivers, homologation details, progress details
4. Car Magazine, UK model releases and commentary
5. Car and Car Conversions Magazine, Link House Publications Ltd., England
- General commentary on models
6. Auto Italia Magazine, Intermarque Publications Ltd., England –
General commentary on models
7. The Times Newspaper Archive – Historical and topical model
news
8. The Daily Telegraph Newspaper Archive- Historical and topical model
news
Reference
Books and Sources
1. All the Fiats by Gianni Mazzochi 3rd edition 1984 Domus Books “Editorale
Domus”
- Milan. Printed by Instituto Geografico De Agostini, Officine Grafiche
of Novara.
2. Fiat Historical Centre, Turin, Italy Brochures pamphlets and information
used as the most reliable source in cases of historical divergence.
3. Modifying and Tuning Fiat/Lancia Twin Cam Engines by Guy Croft 1st
edition 1996. Published by Motor Racing Publications Ltd. Tuning data,
power outputs, 8/16 valve carb. drive train & engine advice
4. Porter Manuals by Lindsay Porter and Roy Stenning Porter Publishing
Ltd., England. Model information from 1989 onwards especially on ‘UK
releases Facts and Figures’.