Lamborghini V12
The Lamborghini V12 refers to the flagship V12 engine used by Lamborghini. Lamborghini has had two generations of V12 engines through their history, both of which were developed in-house. The first-generation Lamborghini V12 was a sixty degree (60°) V12 petrol engine designed by Lamborghini, and was the first internal combustion engine ever produced by the firm.
| Lamborghini V12 | |
|---|---|
From left to right: Giotto Bizzarrini, Ferruccio Lamborghini and Giampaolo Dallara at Sant'Agata Bolognese in 1963, with a Lamborghini V12 engine prototype. | |
| Overview | |
| Manufacturer | Lamborghini |
| Production | 1963–present |
| Layout | |
| Configuration | 60° V12 petrol engine |
| Displacement | 3.5: 3,465 cc (211.4 cu in), 3.9: 3,929 cc (239.8 cu in), 4.8: 4,754 cc (290.1 cu in), 5.2: 5,167 cc (315.3 cu in), 5.7: 5,707 cc (348.3 cu in), 6.0: 5,992 cc (365.7 cu in), 6.2: 6,192 cc (377.9 cu in), 6.5: 6,496 cc (396.4 cu in), 2nd gen 6.5: 6,498 cc (396.5 cu in) |
| Cylinder bore | 3.5: 77.0 mm (3.03 in) 6.2: 87.0 mm (3.43 in) 6.5: 88.0 mm (3.46 in) 2nd gen 6.5: 95.0 mm (3.74 in) |
| Piston stroke | 3.5: 62.0 mm (2.44 in) 6.2: 86.8 mm (3.42 in) 6.5: 89.0 mm (3.50 in) 2nd gen 6.5: 76.4 mm (3.01 in) |
| Cylinder block material | Cast aluminium alloy |
| Cylinder head material | Cast aluminium alloy |
| Valvetrain | double overhead camshaft, 3.5/4.0/4.8: 2-valves per cyl, 5.2/5.7/6.0/6.2/6.5: 4-valves per cyl |
| Compression ratio | 6.2: 11.6:1 6.5: 11.1:1 2nd gen 6.5: 11.8:1 |
| Combustion | |
| Fuel system | 3.5/3.9/4.8/5.2: 6 Weber carburettors, 5.7/6.0/6.2/6.5: electronic multi-point sequential fuel injection |
| Fuel type | Petrol/Gasoline |
| Oil system | 3.5/3.9: wet sump, 6.2/6.5: dry sump |
| Cooling system | Water-cooled |
| Output | |
| Power output | 3.5: 273.7 PS (201.3 kW; 270.0 bhp) 6.2: 580 PS (427 kW; 572 bhp) at 7,500 rpm 6.5: 640 PS (471 kW; 631 bhp) at 7,500 rpm 2nd gen 6.5: 700 PS (515 kW; 690 bhp) at 8250 rpm |
| Specific power | 3.5: 79.1 PS (58.2 kW; 78.0 bhp) per litre 6.2: 93.7 PS (68.9 kW; 92.4 bhp) per litre 6.5: 98.5 PS (72.4 kW; 97.2 bhp) per litre 2nd gen 6.5: 107.7 PS (79.2 kW; 106.2 bhp) per litre |
| Torque output | 6.2: 650 N⋅m (479 lbf⋅ft) at 5,500 rpm 6.5: 660 N⋅m (487 lbf⋅ft) at 5,200 rpm 2nd gen 6.5: 690 N⋅m (509 lbf⋅ft) at 5,500 rpm |
| Dimensions | |
| Dry weight | 253 kg (6.5 litres)/235 kg (2nd gen 6.5) |
| Chronology | |
| Successor | Lamborghini V12 L539 |
It entered production in 1963 as a 3.5 litre displacing 3,465 cubic centimetres (211.4 cu in) fitted on Lamborghini's first car, the Lamborghini 350GT. The engine remained in use for almost fifty years; the final version of 6.5 litre displacement was installed in the Lamborghini Murciélago. Lamborghini discontinued their first-generation V12 after the Murcielago, opting for a brand-new V12 that first saw use on the Lamborghini Aventador.