<< Prev Page 2 of 2 In South Africa, the venerable five-cylinder engine with four-valve head from the 90 IMSA GTO car was installed. Fitted with a massive turbo, it produced a staggering 720 bhp and 720 Nm of torque from less than 2.2 litres of displacement. The mighty 'five' was mated to a six-speed gearbox and Audi's proprietary 'quattro' all-wheel drive system. Stopping power was provided by sizeable ventilated discs all around, while power steering was fitted to help turn the massive front wheels.
Carried over from the road going S4 were as just enough panels to pass homologation. For the components crucial to the car's aerodynamics, the IMSA GTO car served as the inspiration. The front air-dam was carried over without alteration. On the tail a tall, full-width wing was mounted, complemented by a long diffuser to generate even more downforce. Upon completion, the first S4 GTO was painted in Audi's silver and red racing colours but from the second race, the S4s boasted Rothmans sponsorship.
Factory driver Hans-Joachim Stuck drove the car to victory at its first outing in both races of its debut round. For the 1993 season, the two works cars were raced by Terry Moss and Chris Aberdein. The pair dominated the season with Moss just pipping Aberdein for the driver's title and Audi the clear manufacturer's champion. For 1994, the rules were changed to slow the Audis down and the team slipped to second. A completely new set of regulations rendered the cars obsolete for 1995.
With the S4 GTO, Audi also retired the tried-and-trusted five cylinder engine. As a result, the mighty S4 GTO remains as the fastest of a series of rally cars and road racers that first hit the track back in 1980 with the ur-quattro. << Prev Page 2 of 2
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In South Africa, the venerable five-cylinder engine with four-valve head from the 90 IMSA GTO car was installed. Fitted with a massive turbo, it produced a staggering 720 bhp and 720 Nm of torque from less than 2.2 litres of displacement. The mighty 'five' was mated to a six-speed gearbox and Audi's proprietary 'quattro' all-wheel drive system. Stopping power was provided by sizeable ventilated discs all around, while power steering was fitted to help turn the massive front wheels.