Cosworth DFV (1968)
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Home » Racing Engines » Cosworth DFV

Specifications

Introduced in 1968
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Dimensions

Cylinders arrangement: V8 (90o)
Strokes: 4
Bore x Stroke: 86.674 mm x 64.8 mm, 3.412" x 2.551"
Capacity: 2993cc, 186.6ci
Compression ratio: 11.5:1 or 11.0:1

Construction materials

Aluminium alloy block with cast iron cylinder liners
Aluminium alloy cylinder-head with hemispherical combustion chambers
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 Mark II mechanical 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
1968 Ford F3L P68 Lucas Mk II 11.5:1 420 HP / 313 KW @ 9000 rpm 366 Nm / 270 ft lbs @ 7000 rpm
1970 McLaren M8C Lucas Mk II 11.5:1 420 HP / 313 KW @ 9000 rpm 366 Nm / 270 ft lbs @ 7000 rpm
1971 Ligier JS2 Lucas Mk II 11.0:1 420 HP / 313 KW @ 9000 rpm 366 Nm / 270 ft lbs @ 7000 rpm
1971 Ligier JS3 Lucas Mk II 11.0:1 420 HP / 313 KW @ 9000 rpm 366 Nm / 270 ft lbs @ 7000 rpm
1972 Lola T280, S12 Lucas Mk II 11.0:1 445 HP / 332 KW @ 10500 rpm 339 Nm / 250 ft lbs @ 8500 rpm
1972 Mirage M6, S12 Lucas Mk II 11.0:1 445 HP / 332 KW @ 10500 rpm 339 Nm / 250 ft lbs @ 8500 rpm
1973 Lola T282, S12 Lucas Mk II 11.0:1 445 HP / 332 KW @ 10500 rpm 339 Nm / 250 ft lbs @ 8500 rpm
1974 Mirage GR7, S12 Lucas Mk II 11.0:1 445 HP / 332 KW @ 10500 rpm 339 Nm / 250 ft lbs @ 8500 rpm
1975 Mirage GR8 Lucas Mk II 11.0:1 375 HP / 280 KW @ 9000 rpm
1976 Lola T286, S12 Lucas Mk II 11.0:1 445 HP / 332 KW @ 10500 rpm 339 Nm / 250 ft lbs @ 8500 rpm
1982 Rondeau M382, S12 Lucas Mk II 11.0:1 445 HP / 332 KW @ 10500 rpm 339 Nm / 250 ft lbs @ 8500 rpm

Drawings

CosworthDFVo4-www.ruiamaraljr.blogspot.com_.jpg Source
006-DFV-engine.jpg Source
Engine-5m.JPG Source
Engine-05m.JPG Source
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