Honda V12 engine

Honda V12 engine
Honda V12 engine
Overview
Manufacturer	Honda
Designer	Yoshio Nakamura (1964-1968); Osamu Goto (1991-1992)
Production	1964–1968, 1991–1992
Layout
Configuration	1964–1968: 60°-90° V12 ; 1991–1992: 60°-75° V12
Displacement	1.5 L (1,495 cc); 3.0 L (2,993 cc); 3.5 L (3,493 cc); 3.5 L (3,498 cc); 3.5 L (3,496 cc);
Cylinder bore	58.1 mm (2.3 in); 78 mm (3.1 in); 83 mm (3.3 in); 86.5 mm (3.4 in); 88 mm (3.5 in);
Piston stroke	47 mm (1.9 in); 52.2 mm (2.1 in); 53.8 mm (2.1 in); 49.6 mm (2.0 in); 47.9 mm (1.9 in);
Valvetrain	48-valve, DOHC, four-valves per cylinder
Compression ratio	12.0:1-12.9:1
Combustion
Fuel system	Carburetor; Electronic fuel injection
Fuel type	Gasoline
Cooling system	Water-cooled
Output
Power output	210–800 PS (154–588 kW; 207–789 hp)
Torque output	150–500 N⋅m (111–369 lb⋅ft)
Dimensions
Dry weight	120–160 kg (264.6–352.7 lb)
Chronology
Predecessor	Honda RA16 engine
Successor	Honda V10 engine

Honda has made a number of naturally-aspirated V12 engines designed for Formula One motor racing; starting with the 1.5-litre RA271E engine in 1964, and ending with the 3.0-litre RA273E in 1968. This would be followed by a 21-year hiatus, until Honda reintroduced the new 3.5-litre RA121E in 1991. The RA121E would go down as the last V12 engine to win a Formula One World Championship. Honda's last-ever V12 engine, the RA122E/B, raced in 1992.