Cosworth KF engine

The Cosworth-Opel KF engine is a production-based, four-stroke, 2.5-liter, naturally aspirated, V-6 high-revving racing engine, originally designed, developed and produced by Opel, in collaboration with Cosworth, for the DTM and later ITC, between 1993 and 1996.^[5] The engines were tuned by Cosworth, and were based on the Isuzu 6VD1 (1996) 75° production engine, as used in the Opel Monterey, Opel Frontera Limited, Trooper, Rodeo, and Amigo.^[6]

Cosworth-Opel KF engine[1]
Overview
Manufacturer	Cosworth-Opel
Production	1993-1996[2]
Layout
Configuration	Naturally aspirated 54°-75° V-6
Displacement	2.5 L (153 cu in)
Cylinder bore	94 mm (3.7 in)
Piston stroke	60 mm (2.4 in)
Valvetrain	24-valve, DOHC, four valves per cylinder
Compression ratio	12.5:1
Combustion
Turbocharger	No
Fuel system	Fuel injection
Oil system	Dry sump
Output
Power output	450–540 hp (336–403 kW) @ 11,650-12500 rpm
Torque output	220 lb⋅ft (298 N⋅m) @ 9000 rpm
Dimensions
Length	450 mm (18 in)[3]
Dry weight	85–89 kg (187–196 lb)[4]

It is also used in the Gould GR51 open-wheel race car of the Hillclimb and Sprint Association (HSA) British Sprint Championship, since 2000.

Applications

• Opel Calibra DTM V6 4x4^[7]