Cosworth DFL (1981)

Home » Racing Engines » Cosworth DFL


Introduced in 1981
Click here


Cylinders arrangement: V8 (90o)
Strokes: 4
Bore x Stroke: 90.0 mm x 64.8 mm, 3.543" x 2.551"
Capacity: 3298cc, 201ci
Compression ratio: 12.5:1

Construction materials

Aluminium alloy block with cast iron cylinder liners
Aluminium alloy cylinder-head with hemispherical combustion chambers
forged steel crankshaft with 5 main bearings
Steel connecting rod


Dual overhead camshafts (DOHC), gear driven
4 valves / cylinder - 32 valves total


Natural with Lucas multipoint electronic fuel injection


Firing order, 1-8-3-6-4-5-2-7

Cooling and lubrication

Water cooled
Dry sump

Models used and Output

Year Model Induction Compression ratio Power Torque
1982 Rondeau M382 Lucas Mk II 12.5:1 490 HP
1983 Ford C100 Lucas Mk II 12.5:1 490 HP
1984 Rondeau M482 Lucas Mk II 12.5:1 490 HP
dfv-draw.jpg Source
valvesystem1.jpg Source
Unless otherwise stated, the content of this page is licensed under Creative Commons Attribution-ShareAlike 3.0 License