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Michele Alboreto, 1985 winner of the Canadian and German Grands Prix



Model

156/85

Type


Formula 1 racing car.

Years of activity


1985.

First race


Brazilian Grand Prix of 7.4.1985.

Engine


Type 031. 6 cylinders in 120° V, rear-mounted. Light alloy cylinder block and heads, press-fitted aluminium cylinder liners. Water cooled.

Bore and stroke


81 x 48.4 mm.

Unitary and total capacity


249.4 / 1,496.43 cc.

Compression ratio


7:1.

Max. power output


In a race 780 bhp at 11,000 rpm. Max. pressure 3.6 bar.

Timing gear


4 valves per cylinder, 2 overhead cams per bank of cylinders. New gear drive at rear.

Fuel feed


2 KKK turbos positioned at side. Weber-Marelli digital electronic injection plus Emulsistem.

Ignition


Single. Magneti Marelli electronic.

Lubrication


Forced. Dry sump.

Transmission


Rear. Multi-plate clutch. 635 gearbox with 5 speeds + reverse,. transverse incorporating the engine oil tank. ZF self-locking differential.

Gear ratios


Variable depending on racing circuit.

Frame


Type 635. New CAD-designed monococque. Honeycomb composite with carbon fibre and Kevlar.

Front suspension


Double wishbones: double overlapping triangles, pull-rod spring control.

Rear suspension


Double wishbones: upper trapezium, lower triangle, pull-rod spring control.

Steering


Rack and pinion.

Brakes


Carbon discs. Brembo 4-piston callipers on all four wheels.

Tyres


Front 25.0-10.0-13Ó, rear 26.0-15.0-13Ó - Goodyear.

Rims


žSpeedlineÓ multi-piece. Front 12.5x13Ó, rear 16.5x13Ó.

Wheelbase


2,762 mm.

Front/rear track


1,797 mm / 1,663 mm.

Length


4,292 mm.

Width


2,135 mm.

Height


1,080 mm.

Weight with water and oil


548 kg.

Fuel tank (litres)


220. Mid-mounted. Fuel 102 octane RON.

Alternator/dynamo


40 A.

Battery


12 V, 10 Ah.

Bodywork


Composite, only for side panelling of systems.