| General data |
|
| Grand Prix season/s |
1991 |
| Racing drivers |
Alain Prost, Jean Alesi, Gianni Morbidelli |
| Race numbers |
Alain Prost: 27 Jean Alesi: 28 Gianni Morbidelli: 27 |
| VIN span |
122 – 126 |
| Number produced |
5 |
| Presentation |
19 February 1991, Mugello |
| |
|
| Technical Specifications |
|
| Chassis |
Carbon-fibre and honeycomb composite structure |
| Length |
4402 mm |
| Width |
2130 mm |
| Height |
1004 mm |
| Wheelbase |
2830 mm |
| Front track |
1800 mm |
| Rear track |
1675 mm |
| Front suspension |
Independent wheel suspension, double delta wishbones mounted on torsion springs, horizontal shock absorber unit operated by deflection lever and trust rods, anti-roll bar, Push-Rod-System |
| Rear suspension |
Independent wheel suspension, double delta wishbones, horizontal shock absorber unit operated by trust rods, anti-roll bar, Push-Rod-System |
| Front tyres |
13“, 25.0 x 10.0 x 13“ |
| Rear tyres |
13“, 26.0 x 15.0 x 13“ |
| Tyres |
Goodyear Eagle radial slicks |
| Wheels |
Speedline alloy rims |
| Front brakes |
Brembo ventilated and drilled carbon-fibre disc brakes, 4-pod aluminium callipers |
| Rear brakes |
Brembo ventilated and drilled carbon-fibre disc brakes, 4-pod aluminium callipers |
| LeerWeight |
Approx. 505 kg, including oil and water |
| Fuel tank |
Approx. 215 litres |
| Body material |
Carbon-fibre |
| |
|
| Engine |
|
| Type |
291.6 – mid-engine |
| Number of cylinders |
V12 – 65 ° |
| Displacement |
3499,20 ccm |
| Bore and stroke |
86 x 50,2 mm |
| Camshaft |
2 overhead per cylinderbank |
| Valves |
5 per cylinder |
| Valve control |
Valve springs |
| Compression ratio |
Approx. 13:1 |
| Lubrication |
Dry sump |
| Ignition |
Magneti Marelli electronic static ignition |
| Fuel management |
Weber-Marelli electronic injection, Agip fuel |
| Maximum power |
Approx. 710 – 735 hp – 14.800 rpm |
| Gearbox |
7 gears + rev., semiautomatic sequential electronically controlled gearbox, activated by steering wheel paddles, longitudinal installed, limited-slip differential |
| Clutch |
3-disc clutch – carbon-fibre discs |
| Engine weight |
Approx. 125 kg |
| |
|
| Team |
|
| Director of Gestione Sportiva |
Cesare Fiorio |
| Techn. Direktor |
Pierguido Castelli |
| Design engineer/s |
Steve Nichols |
| Engine |
Paolo Massai |
| |
|
| VINs |
|
| |
122, 123, 124, 125, 126 |