This system is much like the one from the flagship and gives the vehicle even more grip on the track. Managing director Ernst Fuhrmann was pressuring Ferdinand to approve development of the new model due to concerns that the then-current flagship model, thewas reaching the limits of its potential.
Styling changes[ edit ] Styling was the same in both andwith the body lacking both front and rear spoilers.
Many cars have had S model features added by subsequent owners, making original "Competition Group" cars difficult to distinguish without checking option codes. This design marked a major change in direction for Porsche started with the introduction of the Porsche inwhose cars had until then used only rear- or mid-mounted air-cooled flat engines with four or six cylinders.
Several members of the Porsche board objected, chiefly because they wanted Porsche Porsche 928 to maintain some separation from Volkswagen. The new polyurethane elastic bumpers were integrated into the nose and tail and covered in body-coloured plastic; an unusual feature for the time that aided the car visually and reduced its drag.
Due to low grade fuel, the valve low compression S engine was made for Australian market in the model year. Legislation against rear-engined vehicles did not materialize. Evolution[ edit ] The M28 V8 engine The evolution of the during its 18 years of production was quite subtle. The rounded fastback was dominated by the large window of the rear lid.
The five-cylinder unit is a derivative of the Volkswagen Golf EA engine, essentially an inline-four with another cylinder added. The doors, front wings and bonnet were therefore made from aluminium instead of sheet steel.
Both rear seats could be folded down to enlarge the luggage area, and both the front and rear seats had sun visors for Porsche 928.
Several drivetrain layouts were considered during early development, including rear and mid-engined designs, but most were dismissed because of technical and legislative difficulties.
This would set it apart from thewith a relatively spartan interior and true sports car performance. Customers could specify paint and interior colours the same way as on a normal Porsche updated the North American S forreplacing the 4.
Similar and specials were also made for world markets.
The rear axle of the was a completely new development. A reported 12 units were made.
The four-bolt bearings are sizeable and are fed oil via grooves in the bottom surface of the block. What made this double-wishbone suspension — also known as the Weissach axle — unique was its toe-in stabilising effect. The displacement increased from an initial 4.
This worked more or less as a passive rear-wheel steering, making a significant contribution to the Porsche 928 safety of the Gran Turismo.
Although it weighed more than the difficult-to-handleits more neutral weight balance and higher power output gave it similar performance on the track. The Carelli conversions were sold as complete cars, with the conversion doubling the price of the car.
When increasing concern within the company over price and availability of fuel during the oil crisis of the s became an issue of contention, smaller engines were considered in the interest of fuel economy.
The automatic transmission was not available for this model. As the faster European model was not available in the United States and Canada during the first three years of its existence, a "Competition Group" option was created to allow North American customers to have an S model lookalike with front and rear spoilers, Porsche 928 flat disc wheels, sport seats, sport springs and Bilstein Shock Absorbers.
Also inthe factory made four white light weigh S4 models with a manual transmission for racecar drivers who were on their payroll at the time. These changes came starting from VINwhich means that the first thousand cars had the old brakes, but later cars had this equipment available.
Power was transmitted according to the transaxle principle. Inrevised suspension settings, larger brakes with 4-piston callipers and modified exhaust system was available on the S, marking the final changes to old body style cars. Early s had inch or inch "phone dial"-style wheels, while most s s had inch slotted "flat disc" wheels, CSs, SEs and GTs had inch "Club Sport" wheels, later GTs had inch "Design 90" style wheels which were also option on same period S4s shared with the as wellthe GTS used two variations of the inch "CUP" wheels.
It featured meteor metallic paint and was fitted with flat disc wheels, wine red leather and special striped fabric seat centers. November This article may contain an excessive amount of intricate detail that may interest only a particular audience. Slumping sales of the seemed to confirm that the model was approaching the end of its economic life cycle.
It came with either a five-speed dog leg manual transmissionor a Mercedes-Benz -derived automatic transmissionoriginally with three speeds, with four-speed from in North America and in other markets.
Even this was achieved without engine changes. S4 was much closer to being a truly world car than previous models as only major differences for North American models were instrumentation in either kilometers or miles, lighting, front and rear bumper shocks and the availability of catalytic converters in many other markets.
These were close to same as later actual Club Sport models and can also be considered prototypes for it. The cars were sold with the planned Bosch K-Jetronic fuel injection system.Sep 07, · Forum - Porsche discussion, how-to guides, and technical help.
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Regardless of whether you search by model, type or model year, you can discover genuine parts and spare parts for the relevant classic car in just a few clicks. When designing thewhich went into series production as of model yearthe focus was on lightweight construction.
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