WESMO COSWORTH Duratec 2.4

WESMO 2.4 by COSWORTH

The Cosworth DFV is a race engine specifically developed for Formula 1 by the British manufacturer Cosworth, which was used over a span of 19 years by more than 90 teams in the Formula 1 World Championship. Its development was initiated by Lotus and financed by Ford, which is why the engine is often referred to as the Ford DFV or Ford Cosworth DFV.

With 155 Grand Prix wins, 12 driver titles, and 10 constructor titles, the Cosworth DFV is the most successful engine in the history of Formula 1.

Michael Schumacher won his first Formula 1 World Championship title in 1994 with Benetton Ford. The car, the Benetton B194, was equipped with a Ford Cosworth V8 engine. Schumacher dominated the 1994 season, winning 6 of the first 7 races and securing a total of 8 victories. The title fight against Damon Hill and the Williams team was fiercely contested, and the season ended dramatically in the final race in Adelaide when Schumacher and Hill collided. Schumacher was subsequently declared the world champion, marking the beginning of his successful career in Formula 1.

Following our acquisition of Cosworth's Duratec business in 2018, Cosworth developed and built the WESMO 2.4-liter engine (2339 ccm) with 280 HP on behalf of Westermann Motorsport. The goal was to come as close as possible to the 280 HP Cosworth Crate Engine in order to utilize existing stock of spare parts (camshafts, crankshaft, connecting rods, bearings, etc.) and to maintain the proven and well-tested technology and performance of the 280 HP engine.

The base of this engine is the 2.5-liter Ford Duratec engine with 2488 ccm displacement, operated with the crankshaft from the 2.3-liter engine (2261 ccm).

Advantages of the 2.4-liter engine over the 2.5-liter engine:

• Lower piston speeds, 94 mm stroke compared to 100 mm
• Significantly lighter crankshaft, as no balance shaft is needed
• No VVC system

This gives us a solid, lightweight, and high-revving engine in our lineup, especially after the popular 2.3-liter engines are no longer in production.

This engine has been extensively tested and successfully used by experienced racing drivers on international high-speed GP circuits such as Hockenheim, Spa Francorchamps, Monza, Imola, and Mugello, as well as in 500 km endurance races.

There are reputable companies that offer 2.4-liter engines with over 300 HP. However, for various reasons, we have consciously decided against such a concept and are taking our own path with a 100% reliable circuit and road engine, which on paper may have slightly less power but offers guaranteed and significant advantages for our applications.

• Working with Cosworth as a premium manufacturer > better resale values
• Special Cosworth Duratec technology, proven over many years
• Attractive pricing
• No need to change axle ratios
• Longer revision intervals - lower operating costs
• Crankshaft from the 2.3-liter (Caterham CSR 200 and CSR 260) or ARROW 2.3
• Forged connecting rods from the Cosworth 2.3-liter by Carillo
• Caterham-compatible dry sump and cooling system (existing systems can be retained)
• Compatibility with Cosworth and C400 airbox (noise reduction)
• Flywheel, clutch, and bell housing are taken from Duratec base models (original Caterham parts)
• Camshafts, valvetrain from the 280 HP 2.3-liter Cosworth
• Caterham or Cosworth rollerbarrel injection system
• Fuel supply and wiring harness from Caterham R 300-400-500, C 400, CSR 260
• Exhaust system R 300-400-500, C 400, 420R, CSR 260 + 2.3 Cosworth with 280 HP
• Ready-to-race engine mapping provided by WESMO; no further costly dyno tuning required
• Engine tuned for 98-octane fuel
• Guaranteed spare parts availability through stock at Westermann Motorsport
• Eligibility for Class 1 in the SMRC with many participants
• Cost-effective upgrade for an R 300-400-500, 420R, C400, CSR 260

The cylinder head can be taken from the 2.0 or 2.3-liter model, which may result in a price reduction when using a donor engine.