  Phil Hill, Drivers' World Champion in 1961 |
 Model 156 F1
Type Formula 1 racing car.
Years of activity 1961/1962.
First race Monte Carlo Grand Prix of 14.5.1961.
Engine Rear. New type 178. 6 cylinders in 120° V. Light alloy cylinder block and heads. Press-fitted aluminium cylinder liners. 126 mm connecting rod. Water cooled.
Bore and stroke 73 x 58.8 mm.
Unitary and total capacity 246.1 / 1,476.60 cc.
Compression ratio 9.8:1.
Max. power output 190 bhp at 9,500 rpm.
Timing gear 2 valves per cylinder, 2 overhead cams per bank of cylinders, chain drive at front.
Fuel feed Single with two 40 IF 3C three-choke downdraft Weber carburettors.
Ignition Double. 2 Marelli coil-ignition units and Marchal 32 H FS sparkplugs.
Lubrication Forced, with oil radiator and dry sump.
Transmission Rear. Dry, multi-plate clutch behind gearbox, damper springs. 543/C overhanging longitudinal gearbox with 5 speeds + reverse. Plunger type limited slip differential.
Gear ratios Variable depending on racing circuit.
Frame Type 543/C. Steel tube frame.
Front suspension Double wishbones: double overlapping triangles, coil springs and coaxial telescopic dampers.
Rear suspension Double wishbones: double overlapping trapeziums, coil springs and coaxial telescopic dampers.
Steering Rack and pinion with damper.
Brakes Dunlop discs and callipers. Inboard at rear on the transmission housing. Independent circuits with double pump.
Tyres Front 5.00x15î, rear 6.00x15î. Dunlop.
Rims Spoked light alloys.
Wheelbase 2,320 mm.
Front/rear track 1,200 mm / 1,200 mm.
Length 4,060 mm.
Width 865 mm.
Height 1,000 mm.
Weight with water and oil 460 kg.
Fuel tank (litres) 150. Two 75-litre tanks at sides. (Petrol NO 98/100).
Bodywork Aluminium single-seater body.
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