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Old 02-18-2005, 07:39 AM
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1987 Ford Sierra RS Cosworth

While Ford Europe made a decision to race the Sierra XR4Ti during 1985 and 1986, it knew that long term it needed to develop a smaller engine that could better fit into the Group A weight rules. The XR4Ti ran in the 3,000 – 3,500 cc weight class due the turbo equivalency rules. With a smaller 2.0 litre engine, the Sierra could run under the 2,500-3,000 cc rules. In theory a 2.0 litre turbo could put out the same power as the 2.3 turbo, at less weight.
Ford contracted Cosworth engineering to develop a turbocharged 2.0 litre engine. The result was a 2.0 litre DOHC 16-valve engine producing 150 kW (200bhp) in road trim. Ford release the road going Sierra RS Cosworth in 1985.
As well as the specialised. 2.0 litre turbo engine, the RS Cosworth also received an enormous rear wing mounted near the top of the hatch. This was designed to help give the car better downforce on the track.
Ford built 5,000 RS Cosworths and had them homologated and ready to race by the start of the 1987 season. The RS Cosworth was only intended to be an interim car. It ran a smaller turbo than was desirable for race use, in the interests of reliability in the road car. Ford planned a “evolution” version of the RS Cosworth, which would require a further 500 cars be built. This would be the RS500 Cosworth.
Until sufficient numbers of the production RS500 were built, race teams had to make do with the RS.
The Eggenburger team once again was the factory backed Ford team, and two Eggenburger Sierra RS Cosworths lined up in the 1987 World Touring Car Championship. The RS Cosworths had 360 bhp, about 30 more than the XR4Tis of the previous season, and weighed 75 kg less. They proved fast, but fragile, only picking up one major win at the Nurburgring during their 6 month race career.
In Australia, Dick Johnson switched from the Mustang to the Sierra. Johnson’s team was used to V8 OHV technology and took a while to adapt to the English turbocharged Sierra. However, the Johnson Sierra’s showed potential, with Johnson winning the Adelaide round of the 1987 WTCC.

First Race: 1987 ATCC Round 1 at Calder – Dick Johnson
Last Race: 1987 WTCC Spa 24 hour Belgium
The RS Cosworth only had a 6 month long race career before being replaced by the RS500.

Major Championship and Race Victories:
1987 WTCC Nurburgring 500 Germany – Klaus Ludwig/Klaus Niedzwiedz
1987 ATCC Adelaide round – Dick Johnson

Specs:
Engine:
1,994 cc 4-clyinder, 16 valve, DOHC, Garrett T03 turbocharger, 1.6 bar of boost.
Power: 270kW (360 bhp)

Transmission: Getrag 5-speed.


Driving Wheels: Rear.

Homologated Kerb Weight: 1,035 kg
Attached Images
File Type: jpeg EggenburgerSierraRS1987.jpeg (16.7 KB, 221 views)
File Type: jpg Wolf Sierra Brno-1987-11.jpg (45.5 KB, 105 views)
File Type: jpg Wolf Sierra Brno-1987-11b.jpg (70.9 KB, 95 views)
__________________
UCP's biggest Ford Sierra RS500 and BMW M3 E30 fan. My two favourite cars of all time.

Last edited by motorsportnerd; 02-18-2005 at 08:09 AM.
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