The last oddball at the Indianapolis Motor Speedway
Part 7: Specifications
- Henri Greuter
- December 17, 2008
- March-Porsche 90P - The last oddball at the Indianapolis Motor Speedway, by Henri Greuter
- March-Alfa Romeo 90CA - Fiasco Italo-Brittanico, by Henri Greuter
- Porsche - Weissach's single Grand Prix win, by Mattijs Diepraam/Felix Muelas
1990 Indianapolis 500
The following data were reproduced from the info sheets as supplied in the Porsche presskit made available during the Month of May in 1990 at the Indianapolis Motor Speedway press room.
Technical data for the 1990 Foster's Quaker State Porsche Indycar
|Chassis:||March 90P, monocoque of aluminium-clad composite sandwich|
|Engine:||Porsche eight cylinder 90 degree V 8, water cooled, four valves per cylinder, dual overhead camshafts, single turbocharger, dual wastegates.|
|Displacement:||2.649 litres (161.7 cubic inches)|
|Bore:||88.2 mm (3.47 inches)|
|Stroke:||54.2 mm (2.13 inches)|
725 hp at 12,000 rpm.
*12,500 maximum rpm
|Torque:||343 lb./ft at 8,500 rpm|
|Turbocharger boost pressure:||45 inches of mercury controlled by a single manifold relief 'pop-off' valve.|
|Ignition/Fuel injection:||Bosch spark plugs, Bosch Motronic|
|Transmission:||3 shaft, five speed with changeable ratios|
|Suspension:||Dual wishbone upper and lower, front and rear push-rod to rocker with built in coil spring/shock absorber units|
Front - 10"x 15"
Rear 14"x 15"
Goodyear Eagle Racing Radials
Front - 25.5 x 10 R15
Rear - 27.0 X 14.5 R15
Front - 67.8 inches
Rear - 63.5 inches
|Wheel base:||112 inches|
|Fuel capacity:||40 U.S. gallons|
|Weight:||1,550 pounds (less fuel)|