Chevron B31
| Category | Group 6 |
|---|---|
| Constructor | Chevron Cars Ltd |
| Designer(s) | Derek Bennett |
| Predecessor | Chevron B26 |
| Successor | Chevron B36 |
| Technical specifications | |
| Chassis | fibreglass body on aluminium monocoque, front and rear subframes |
| Suspension (front) | double wishbones, coil springs over dampers, anti-roll bar |
| Suspension (rear) | single top links, twin lower links, twin trailing arms, coil springs over dampers, anti-roll bar |
| Engine | Hart 420R 1,995 cc (121.7 cu in) naturally-aspirated I4 (original); many others were used throughout the car's career. mid-engined, longitudinally mounted |
| Transmission | Hewland 5-speed manual |
| Weight | 580 kg (1,279 lb) |
| Tyres |
Goodyear Avon |
| Competition history | |
| Debut | 1975 1000 km of Mugello |
The Chevron B31 was a sports prototype racing car built by Chevron Cars Ltd in 1975, and initially used in the European 2-Litre Championship. The car was an evolution of the Chevron B26, and was initially fitted with a 2-litre Hart 420R straight-four engine producing 290 hp (216.3 kW; 294.0 PS). However, various other engines were used; the car also ran with engines such as the 3-litre Cosworth DFV V8, the 2-litre Cosworth FVD/Cosworth BDG straight-four engines, and the 2-litre BMW M12 straight-four, amongst others.
The Chevron B31 was an evolution of the B26, and was designed for the European 2-Litre Championship by Chevron Cars Ltd's founder Derek Bennett in 1975; six cars were built. The B31 featured subtle changes, such as a slightly redesigned bodywork, but it featured the same basic aluminium monocoque chassis as its predecessor. The bodywork was made from fiberglass, and the B31 was designed to use the same Hart 420R engine as its predecessor had. The 420R was a naturally-aspirated 2-litre, 16 valve DOHC fuel-injected straight-four engine, with a maximum power output of 290 hp (216.3 kW; 294.0 PS) at 9500 rpm, and the power was transmitted to the rear wheels by a Hewland 5-speed manual transmission.
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