Dijon, 20 May 1984 - René Arnoux, 4th in the French Grand Prix.
Formula 1 racing car.
Years of activity
Brazilian Grand Prix of 25.3.1984.
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.
Max. power output
In a race 660 bhp at 11,000 rpm. Max. pressure 3.2 bar.
4 valves per cylinder, 2 overhead cams per bank of cylinders. Gear drive at rear.
2 KKK central upper turbos and Lucas-Ferrari or digital Weber-Marelli indirect injection plus Emulsistem.
Single. Magneti Marelli electronic.
Forced. Dry sump.
Rear. Multi-plate clutch. 633 gearbox with 5 speeds + reverse, transverse in block with self-locking differential.
Variable depending on racing circuit.
Type 633. Monococque in Kevlar-carbon fibre composite.
Double wishbones: double overlapping triangles, pull-rod spring control.
Double wishbones: upper trapezium, lower triangle, pull-rod spring control.
Rack and pinion.
Ventilated cast iron discs, Brembo 4-piston cast aluminium callipers .
Front 25.0-9.0-13î, rear 26.0-15.0-13î - Goodyear.
Multi-piece. Front 12.5x13î, rear 16.5x13î.
1,768.4 mm / 1,680.2 mm.
Weight with water and oil
Fuel tank (litres)
220. Mid-mounted. Fuel 102 octane RON.
Composite, only for side panelling of systems.