Audi 90 IMSA GTO
Produced:
1989
Engine:
2190cc - 20v - 720hp at 7500 rpms
Following the 200 Trans Am quattros used in 1988, Audi chose to enter the IMSA GTO series. It was a silouette (regarding roof and pillars) class of seriesproductioned cars, but was unlimited in any other ways. Audi took their Audi 90 quattro as a basis, keeping the roof and building a spaceframe-chassis out of steel with carbonfibre bodyparts. Gigantic flares tucked the enormous 14J17 wheels, and the boot had two versions of racing spoilers. Coupe was also protected by aluminium-panels. The fuelcell was of rubber, packed in aluminium and mounted in the rear of these cars to keep things safe. Naturally, the quattro drivetrain was used, much with the same specifications as the last Group B cars with sixspeed gearboxes. The 90 IMSA GTO appreared in the usual Audi Sport livery. Yet again, the turbocharged inline five was taken to racing, but this time in it's 20 valved version featuring Bosch enginemanagement, which is locked to each individual engine. Most noticeable is the newly designed head with improved cooling, now offering 720~730hp and 850Nm on the 2190ccm. Length & width given by 4480mm & 2000mm, with a weight of 1206kg. Hurley Haywood and Hans Joachim Stuck was chosen as drivers, whereas the latter won at Summit Point, Mid-Ohio, Topeka, Sears Point, Glen Watkins, Lime Rock and Laguna Seca. The drivers achieved 3rd and 4th place (in that order) in the championship, while Audi took 2nd place in the constructor championship.
