Cosworth DFL (1981)

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Specifications

Introduced in 1981
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Dimensions

Cylinders arrangement: V8 (90^o)
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

Cylinder-head

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

Aspiration

Natural with Lucas multipoint electronic fuel injection

Ignition

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
1981	Lola T600	Lucas Mk II	12.5:1	490 bhp / 366 kW @ 9,500 rpm
1982	Lola T610	Lucas Mk II	12.5:1	490 bhp / 366 kW @ 9,500 rpm
1982	Rondeau M382	Lucas Mk II	12.5:1	490 bhp / 366 kW @ 9,500 rpm
1983	Ford C100	Lucas Mk II	12.5:1	490 bhp / 366 kW @ 9,500 rpm
1984	Rondeau M482	Lucas Mk II	12.5:1	490 bhp / 366 kW @ 9,500 rpm

Source