Formula 1 racing car.
Years of activity
U. S. Grand Prix of 10.3.1991. From the French GP of 7.7.1991, 643 version, with modified frame and aerodynamics.
Rear-mounted. 12 cylinders in 60° V. Special cast iron cylinder block without press-fitted cylinder liners, light alloy head. Water cooled.
Bore and stroke
86 x 50.2 mm.
Unitary and total capacity
291.6 / 3,499.2 cc.
Max. power output
710 bhp at 13,800 rpm.
5 valves per cylinder (3 intake). 2 overhead camshafts, gear drive at front.
Weber-Marelli digital electronic injection with two injectors per cylinder.
Single. Magneti Marelli electronic static.
Pressurised. Dry sump.
Rear. Three-plate carbon clutch with mechanical and automatic control. Rear longitudinal overhanging gearbox with 7 speeds + reverse, automatic with electronic management. ZF self-locking differential
Variable depending on racing circuit.
Monococque in composite: carbon fibre and Kevlar honeycomb.
Double wishbones: 2 overlapping elliptic section triangles, strut or push-rod springing.
Double wishbones: upper triangle, lower trapezium, strut or push-rod springing.
Rack and pinion.
Ventilated outboard carbon discs, Brembo monobloc 4-piston callipers.
Front 25x10î, rear 26x15î. Goodyear.
1,800 mm / 1,675 mm.
Weight with water and oil
215 litres, with 1 centre and 1 side tanks. Fuel 102 RON.
Marelli 50/70 W.
Yuasa - 12 Volt.
Composite. Fully detachable and removable.