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1973 | 312 B3 |
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| Jacky Ickx | Arturo Merzario |
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Fiche technique 312 B3
Engine :
Type 001/11,
rear-mounted 180° V12 derived from 001/1, light alloy cylinder block
and head, aluminium wet cylinder liners, 112 mm connecting rods,
water cooled
Bore and stroke :
80 x 49.6 mm
Unitary and total capacity :
249.317/2,991.801 cc
Compression ratio :
11.5:1
Max. power output :
485 bhp at 12,500 rpm
Timing gear :
4 valves per
cylinder, 2 overhead camshafts per cylinder bank, gear driven off
the rear of the engine
Fuel feed :
Lucas indirect injection.
Ignition :
Single plug, Magneti
Marelli Dinoplex electronic capacitive discharge
Lubrication :
Dry sump
Transmission :
Rear-wheel drive,
Borg & Beck multi-plate clutch, 628 rear longitudinal
overhanging 5-speed gearbox + reverse, in unit with limited-slip
differential
Frame :
Type 628 monocoque in
boxed sheet aluminium
Front suspension :
Double wishbones, rocker
arms, inboard spring/damper units and anti-roll bar
Rear suspension :
Upper arm, lower wishbone,
upper radius rod and anti-roll bar
Steering :
Rack and pinion.
Tyres:
Front 9.0-20.0-13", rear
14.0-26.0-13", Goodyear
Rims:
cast light alloy; front 10x13",
rear 16x13"
Wheelbase :
2,500
mm.
Front/rear track :
1,625
mm / 1,605 mm.
Length :
4,335 mm
Width:
2,056 mm.
Height :
900 mm.
Weight with water and oil :
578 kg.
Fuel tank :
230 litres, 2 side-mounted
tanks
Bodywork :
Aluminium single-seater
body with composite elements.