TECH SPEC SIERRA COSWORTH
ENGINE 1993cc Cosworth YB built by Harvey Gibbs, 200 block, six long studs, stock crank, +0.25 Cosworth pistons, 7.9:1 compression ratio, Mahle race-spec main and big end bearings, Cosworth high-pressure oil pump, big-wing sump, WRC head gasket, Nick Waples ported cylinder head, Newman BD14 and BD16 cams with double valve springs, vernier pulleys, Hart inlet manifold, custom stainless tubular exhaust manifold, BorgWarner 70/64 twin-scroll turbo, Pro Alloy 63mm intercooler with twin fans, full custom hose set, Turbosmart recirculating valve, Link Fury ECU with wideband lambda control, fuel and oil pressure monitoring, knock control and oil temp, Anembo fuel rail with Bosch 1000cc multi-hole injectors, coil-on-plug, turbo speed sensor
POWER 515bhp, 510lb.ft (mapped by Abbey Motorsport)
TRANSMISSION Rebuilt BorgWarner T5 gearbox (soon to be fitted with Quaife…