British Rally Team MacArthur Motorsport website

British rally team competing on tarmac and in the forest on
BTRDA, ANCRO, BRC and club special stage rallies in various
rally cars - currently an ex-works Ford Sierra RS Cosworth

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Ford Sierra RS Cosworth

MacArthur Motorsport | The Teams Rally Cars | Ford Sierra RS Cosworth

Ford Sierra RS Cosworth - ex Gwyndaf Evans, RAC 1987

Built as one of the 7 'Securicor Sierra Challenge' cars in 1985 by Ford at Boreham for Chris Mellors, it was then converted to Group N spec by Dennis Osbourne (DOME) and became the most successful Group N Sierra Cosworth in British rallying - winning Group N on the BRC in 1988, driven by Gwyndaf Evans.

Ex-Securicor Sierra Chalenge Gp N Sierra Cosworth wlith drivers like Gwyndaf Evans, Chris Mellors & Kenny McKinstry

Currently rebuilding the car with assistance from Dennis and Roger Pitts (Brooklyn Ford) amongst others.

Ex-Securicor Sierra Challenge C234 HVW Sierra Cosworth undergoing a major rebuild by MacArthur Motorsport...

Rolling road setup at Owen Developments, on the trailer and off to Rockingham Stages for testing.

Rolling road setup at Owen Developments, on the trailer and off to Rockingham Stages December 2008 for testing...

So far: new diff (DOME), Premier bag tank, OMP GpN exhaust, 909 fuel pumps, filter & lines, calipers, discs & pads all-round, suspension bushes all-round, engine sensors/ignition system, rolling-road setup, seats, belts, extinguishers, steering wheel, steering rack, interior carbon, tarmac wheels, anti-roll bars, lamp pod, gearbox rebuild, clutch and more. Bodywork last, when the driver is done learning RWD!

Rally Car Specifications:

Model • 1985 Ford Sierra RS Cosworth
Class • FIA Group N (Production Class)
Engine • 1993cc turbocharged 4-cylinder in-line
Power • Approx 275 bhp @ 1.2bar on 32mm restrictor
Transmission • Rear-wheel drive, 5-speed dog-engagement with 4.4 LSD