Ford planned the Escort to take over from the Sierra in rallying as early as 1988, as they needed a smaller car to win the World Rally Championship (WRC). They gave the job of development to SVE (Special Vehicle Engineering) and Cosworth, who shortened the Sierra Cosworth 4WD sedan's floorpan and put it under the Escort shell, giving it wider arches to maintain the standard track width. Viscous couplings split the power 34:66 front /rear, giving a bias towards rear-wheel drive which proved very effective. The four-cylinder Cosworth engine was fitted with a hybrid Garrett T3/T04B turbocharger and two stage intercooler, and to help reduce turbo lag, a Weber-Marelli multi-point electronic fuel injection system tuned the turbo to overboost slightly. While successful in various races, it took until the car's last season, 1997, for Spanish driver Carlos Sainz to bring home the WRC for Ford.
Ford Escort RS Cosworth Specifications
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