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moe






QUOTE
The CitroŽn SM was a high performance coupť produced by the French manufacturer CitroŽn between 1970 and 1975. The SM placed third in the 1971 European Car of the Year contest, trailing its stablemate CitroŽn GS, and won the 1972 Motor Trend Car of the Year award in the US in 1972.

In 1961, CitroŽn began work on 'Project S' - a sports variant of the revolutionary CitroŽn DS. As was customary for the firm, many running concept vehicles were developed, increasingly complex and upmarket from the DS - eventually becoming a halo vehicle for the brand. CitroŽn purchased Maserati in 1968 with the intention of harnessing Maserati's high performance engine technology to produce a true Gran Turismo car, combining the sophisticated CitroŽn suspension with a Maserati V6 engine.

The result was the CitroŽn SM (Sport Maserati), first shown at the Geneva Motor Show in March1970. It finally went on sale in France in September of that year. All produced were left-hand-drive, although some RHD conversions were done in the UK.

The SM was CitroŽn's flagship vehicle, competing with other high performance GTs of the time from manufacturers such as Jaguar, Lotus and Porsche. It was also CitroŽn's way of demonstrating just how much power and performance could be accommodated in a front-wheel drive design.

The SM innovated a new type of variable assist power steering that has since spread throughout the vehicle population. It allowed great assistance to the motorist while parking, but little assistance at motorway speeds. The steering actually had the same "assist" at all speeds - the steering was hydraulically locked against steering movement of the wheels from the road ("feedback") up to the capacity of the unit. Hitting a chuckhole at high speed would not turn the steering wheel in the driver's hands! The hydraulic pressure to the power centering unit increased with speed, giving the impression of less and less power "assist." Enough pressure was admitted to the centering unit to return the wheels to the straight ahead position when the car was not moving. The centering pressure was regulated by a flyweight centrifugal governor driven by the pinion (secondary) shaft of the manual gearbox and by a proportioning valve connected to the pressure in the automatic gearbox, which pressure was proportional to the speed of the output shaft.

Contemporary automotive journalists were most effusive about the SM's dynamic qualities, which were unlike anything they had experienced prior. The SM provided a combination of comfort, sharp handling, and high performance not available in any other car at the time. Popular Science noted that the SM had the shortest stopping distance of any car they had tested. To this day this stopping distance remains outstanding.

Styling

The look of the car was quite distinct. Designed in-house by CitroŽn's chief designer Robert Opron, the SM bore a vague family resemblance to the DS. Seen from above, the SM resembled a teardrop, with a much wider track at the front.

The SM was unusually aerodynamic for its era, with a very low drag coefficient. European critics marvelled at the resulting ability to travel for hours at 200 km/h (120 mph) in comfort. In addition, many of the details reflected Robert Opron's American background, notably the truncated 'fins' at the rear.

The SM combined many unusual features - lights that swivelled with the steering (except in the USA where such was illegal), unique self-centering and fully powered steering, self-leveling headlights (except in the USA where such was illegal), a wiper mechanism that was 'sensitive' to rain, and many other features that are now commonplace on the cars of today.

The SM's design was timeless; the car was even used in a 1999 television advertisement for British Petroleum of Spain, where 'a futuristic car was required'. It placed eleventh on Automobile Magazine's 2005 "100 Coolest Cars" listing.

In 1970, it was a car of the future and the fastest front-wheel drive car to be made. It was an example of the car as a symbol of optimism and progressive technology, similar to the SM's contemporary, the Concorde aircraft.

Engines

The SM was sold with three very similar, small, lightweight engines, all derived from the contemporary Maserati V8 fitted to the Quattroporte. Because of the V8 origin, this engine sported an unusual 90 degree angle between cylinder banks - a trait shared with the PRV V6.

The engines - always mounted behind the front axle were:

ē2.7 L V6 with Weber 42 DCNF carburettors, "C114-1" (170 bhp) (1970-1972)
ē2.7 L V6 with Bosch D-Jetronic injection, "C114-03" (178 bhp) (1973-1975 - Not available in the US)
ē3.0 L V6 with Weber 42 DCNF carburettors, "C114-11" (180 bhp) (1973-1975 - US only in 1973, rest of the world, automatic only in 1974 & 1975)

The size of the 2.7 L engine was limited by French puissance fiscale taxation, which effectively banned large displacement vehicles. The engine was also used in the Maserati Merak from 1973 to 1982 and the Ligier JS2 sports car. The final SMs were produced in the Ligier factory in Vichy.


Source: NetCarShow
Phix
Cool to be in; uncool to see it from the outside.
moe
I think it just oozes in cool in about every way.
Uwe
Neutral. It is the transition phase between the old and ultracool DS and the new MJU crap that came afterwards.
Phix
Bump. 1 more vote.
porsche944
QUOTE(Phix @ Mar 29 2009, 03:45 PM) *
Cool to be in; uncool to see it from the outside.

my thoughts exactly, neuter
Marien
CitroŽn is always pushing it with the design of their top of the line sedan. This was no different. I like it.
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