Sierra Sapphire 4x4 RS Cosworth

The Sierra 4x4 RS Cosworth is based on the 4 door Sierra Sapphire shell. The vehicle was available from 1990 in both RHD (Right Hand Drive) for the UK market, and LHD (Left Hand Drive) for European market. Approximately 12,000 were built at Genk, Belgium.

Engine:
YBG 1993cc block, 16 Valve, turbocharged, 224bhp engine.
Bore/stroke: 90.82 mm/76.95 mm.
4WD Cosworth model's intercooler was enlarged by 25% to further aid charge cooling.
catalytic-converter.
Torque: 214lb ft at 3,500 rpm.
Ford EEC IV Management.
Fuel injection used Weber equipment.

Gearbox and Transmission:
Ferguson 4x4 transmission with the Ford MT75 gearbox.

Chassis:
Hydraulic power assistance, rack and pinion, lock-to-lock: 2.6 turns.
F: Via MacPherson struts, monotube gas damping, RS spring rates, anti-roll bar.
R: Separate springs and single tube gas dampers, plus 18mm rear anti-roll bar.

Brakes:
F: 278 x 24 mm
R: 273 x 20 mm
Four wheel ventilated discs with ABS electronic anti-lock braking - all power assisted.

Wheel & tyres:
RS 7 x 15 in alloys.

Body Work and Interior:
Construction: Unitary steel with RS polyurethane panels including front and rear spoilers, side sills and bonnet louvres.
Overall length: 4,494 mm (176.9 in)
Width, 1,698 mm (66.8 in)
Height, 1,376 mm (54.2 in)
Wheel-base, 2,608 mm (102.7 in)

Performance:
0 60 mph in 6.6 sec.
Fuel consumption: 22.1 mpg urban; 37.2 mpg at constant 56 mph; 30.4 mpg at 75 mph.
Max speed: 150 mph.