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Dan Gurney



Model

256 F1


Type


Formula 1 racing car.

Years of activity


1959/60.

First race


International 200 Race, Aintree, of 18.4.1959

Engine


Type 155/59. 6 cylinders in 65° V. Front-mounted. Light alloy cylinder block and head, press-fitted cast iron wet cylinder liners, 135 mm connecting rod, water cooled.

Bore and stroke


86 x 71 mm.

Unitary and total capacity


412.424 / 2,474.548 cc.

Compression ratio


9.8:1.

Max. power output


295 bhp at 8,600 rpm.

Timing gear


2 valves per cylinder, 2 overhead camshafts per bank of cylinders, chain drive.

Fuel feed


Single per cylinder with 3 Weber 45 DCN twin-choke carburettors.

Ignition


Double with Marelli twin magneto and Marchal 32 HFS sparkplugs.

Lubrication


Forced, dry sump.

Transmission


Rear. Dry, multi-plate clutch, hydraulic control, 528/B gearbox with 5 speeds + reverse, rear-mounted in block with self-locking differential.

Gear ratios


Variable depending on racing circuit.

Frame


Type 528/B. Steel tube frame.

Front suspension


Double wishbones: double triangles, coil springs, coaxial Koni telescopic dampers and anti-roll bar.

Rear suspension


De Dion axle, reaction arms, coil springs and coaxial Koni telescopic dampers.

Steering


Gemmer France rack and pinion.

Brakes


Dunlop discs on all four wheels with hydraulic control.

Tyres


Front 5.50x16, rear 7.00x16. Dunlop.

Rims


Spoked. Front 4.5Kx16, rear 5.5Kx16.

Wheelbase


2,220 mm.

Front/rear track


1,240 mm / 1,300 mm.

Length


4,030 mm.

Width


1,500 mm.

Height


980 mm.

Weight with water and oil


560 kg.

Fuel tank (litres)


150 in centre tank, 17 in side tanks.

Bodywork


Single-seater aluminium body.