The 1985 Ford Sierra RS Cosworth is a car that stands out not just for its striking looks, but for its roots in competitive racing. Born out of necessity to meet Group A regulations, which required 5000 units for homologation, the Sierra Cosworth was designed to dominate the racetrack, continuing Ford’s tradition seen in the Lotus Cortina and RS Escorts.
Engineered for Performance
At the heart of the Sierra Cosworth lies a 2.0-liter turbocharged four-cylinder engine, developed by the renowned engineering firm Cosworth. This powerhouse, known as the YB engine, features an aluminum head on a cast iron block with a turbocharger that boosts its output to an impressive 204 horsepower. In racing trim, this engine could deliver up to 375 horsepower, showcasing its potential on the track.
Distinctive Design
The Sierra Cosworth’s design is unmistakable, highlighted by a prominent rear wing that not only gives it a bold appearance but also provides functional downforce. The three-door shell with a large rear-quarter window, widened arches, and an aggressive front air dam all contribute to its aerodynamic efficiency and striking aesthetic.
Superior Handling
Equipped with a MacPherson strut front axle and semi-trailing arm rear setup, the Sierra Cosworth’s chassis was fine-tuned by Ford’s Special Vehicle Engineering division. The car features enhanced spring rates, dampers, anti-roll bars, and a quicker steering rack, ensuring it handles with precision and agility. The 15-inch wheels, ventilated front discs, and solid rear discs further enhance its performance capabilities.
Racing Legacy
Upon hitting the racetrack in 1987, the Sierra RS Cosworth quickly proved its mettle, winning multiple championships and endurance races, including the Nürburgring 24 Hours. Its rear-wheel drive layout, while less suitable for rallying, still managed to secure victories, showcasing its versatility and performance.
Enduring Appeal
Today, the 1985 Ford Sierra RS Cosworth remains a highly coveted classic, revered by enthusiasts and collectors. Its combination of racing heritage, distinctive design, and high performance ensures its place in automotive history.
The Sierra RS Cosworth is not just a car; it’s a testament to Ford’s commitment to performance and innovation, a legacy that continues to inspire and captivate.
1985 Ford Sierra RS Cosworth: Engine Specs and Performance
- Engine: 2.0-liter turbocharged four-cylinder (YB engine)
- Max Power: 204 bhp @ 6000 rpm
- Max Torque: 205 lb-ft @ 4500 rpm
- 0-60 mph: 6.2 seconds
- Top Speed: 150 mph
Source: Ford Heritage Vault
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