Cosworth KF engine
| 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] |
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]
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
[edit]References
[edit]- ↑ Musselwhite, Bryn (27 August 2013). "Carbon Not Dated: The Secret Zakspeed Calibra". Speedhunters. Retrieved 9 December 2022.
- ↑ "Cosworth Engines". italian.sakura.ne.jp. Retrieved 30 June 2025.
- ↑ "Engines, Trevor Morris Engines". tmeng.co.uk. Retrieved 30 June 2025.
- ↑ "Opel Cosworth KF engine 500bhp, used in the DTM Calibra. Revs to 12,000 rpm and weighs just 85kg amazing engineering". Retrieved 30 June 2025 – via Pinterest.[better source needed]
- ↑ Quiniou, Louis (17 August 2015). "#TouringCarMadness – ITC and the stillborn 1997 Zakspeed Opel Calibra". Retrieved 30 June 2025.
- ↑ "Cosworth KF Engine - SOLD". racecarsdirect.com. 15 February 2023. Retrieved 30 June 2025.
- ↑ "25 Years Ago: Opel Wins World Touring Car Championship with Calibra". media.stellantis.com. 14 April 2021. Retrieved 19 September 2022.
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