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  Lotus 91 Cosworth      

  Article Image gallery (28) Chassis (3) Specifications  
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Country of origin:Great Britain
Produced in:1982
Numbers built:5
Designed by:Colin Chapman with Peter Wright, Tony Rudd and Martin Ogilvie
Predecessor:Lotus 87 Cosworth
Author:Wouter Melissen
Last updated:January 04, 2012
Download: All images

Engine
Configuration Ford Cosworth DFV 90º V8
Location Mid, longitudinally mounted
Weight 147 kilo / 324.1 lbs
Construction magnesium alloy block and head
Displacement 2,993 cc / 182.6 cu in
Bore / Stroke 85.7 mm (3.4 in) / 64.8 mm (2.6 in)
Compression 11.5:1
Valvetrain 4 valves / cylinder, DOHC
Fuel feed Lucas Fuel Injection
Lubrication Dry sump
Aspiration Naturally Aspirated
Power 490 bhp / 366 kW @ 10,750 rpm
Torque 353 Nm / 260 ft lbs @ 9,000 rpm
BHP/Liter 164 bhp / liter

Drivetrain
Body carbon fibre panels
Chassis Kevlar reinforced carbon fibre composite monocoque
Suspension (fr/r) double wishbones, coil springs over shock absorbers, anti-roll bar
Steering rack-and-pinion
Brakes ventilated discs, all-round
Gearbox Hewland 5 speed Manual
Drive Rear wheel drive

Dimensions
Weight 580 kilo / 1,279 lbs
Wheelbase / Track (fr/r) 2,748 mm (108.2 in) / 1,883 mm (74.1 in) / 1,701 mm (67 in)

Performance figures
Power to weight 0.84 bhp / kg

Race history
Major wins
1982 Austrian Grand Prix (Elio de Angelis in 91/8)

Resources
Suggested reading
  • The Lotus Book S2, by William Taylor
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Useful links

  Article Image gallery (28) Chassis (3) Specifications