Ferrari Colombo 312 (1969)

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Specifications

Ferrari Colombo 312
Introduced: 1969 for Sports Cars

Dimensions

Cylinders arrangement: V12 with 60º included angle
Strokes: 4
Bore x Stroke: 77.0 mm x 53.5 mm, 3.015" x 2.106"
Capacity: 2990cc, 183ci

Construction materials

Silumin block, 94 mm bore spacing, with cast iron cylinder liners
Aluminium alloy head
Steel crankshaft with 7 main bearings 60 mm diameter
Steel connecting rod

Cylinder-head

Double overhead camshaft (DOHC), chain driven
4 valves per cylinder - 48 valves total

Aspiration

Natural, with Lucas Mark II mechanical fuel injection

Ignition

Single spark plug per cylinder, 2 ignition coils, Firing order 1 - 12 - 5 - 8 - 3 - 10 - 6 - 7 - 2 - 11 - 4 - 9

Cooling and lubrication

Water cooled
Dry sump

Models used and Output

Year	Model, Engine	Induction	Compression ratio	Power	Torque
1969	Ferrari 312 P, Tipo 242	Lucas Mark II	11.0:1	420 bhp / 309 KW @ 9800 rpm
1971	Ferrari 312 PB, Tipo 242	Lucas Mark II	11.5:1	450 bhp / 336 KW @ 11000 rpm