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AC Cobra
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Porsche 968
The engine is a very sophisticated version of the 4 cylinder, 3 litre, 16 valve unit first used on the Porsche 944 S2. All alloy with Vario Cam for optimum power throughout the speed range. Improved combustion chamber and inlet manifold design, give the engine 240 HP at 6200 rpm and torque of 305Nm at 4100rpm (58Kw/Litre). At the time of production the engine had the highest displacement per cylinder of any car engine and also the highest torque output of any unblown 3 litre engine. Clearly Porsche had invested massive development on this engine with the required result. As with previous engines twin balancer shafts keep vibration and noise down to more than acceptable levels. The rear mounted gearbox is a 6 speed manual or a 4 speed tiptronic, the first ever on a production car. The tiptronic utilises the research and development done jointly by Porsche and Bosche to manufacture a unit that combines the best qualities of a manual gearbox for the open road with the best qualities of an automatic gearbox for town driving.
The chassis is a delight with it's near perfect weight distribution and
very stiff characteristics helped by the torque tube connecting the engine
to the gearbox also some 911 components have been used in it's production. Porsche brakes have always been the envy of most road sports car manufacturers, as this is usually where most road sports cars start to fail, no matter how fast they are in a straight line if you can't take a bend at the right safe speed then you can't use the cars speed. The Porsche 968 has carried forward this important philosophy with little or no discernable fatigue even under harsh use. Self ventillating discs, open ventillation alloy wheels and a study of the air flow around the discs contribute to more than adequate cooling and so minimal fatigue and break fade. ABS adds even more safety to the already excellent braking system. The wheels themselves are designed to prevent the tyre coming off the rim in the event of a sudden pressure loss at speed. Double galvanised bodywork, a 10 year anti corrosion warranty and 3 year paintwork warranty ensure the high bodywork standards associated with Porsche cars. S. Cookson, 29-7-03
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