Honda V12 engine | |
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Overview | |
Manufacturer | Honda |
Designer | Yoshio Nakamura (1964-1968) Osamu Goto (1991-1992) |
Production | 1964–1968, 1991–1992 |
Layout | |
Configuration | 60°-75° V12 |
Displacement | 1.5 L (1,495 cc) 3.0 L (2,993 cc) 3.5 L (3,497 cc) 3.5 L (3,496 cc) |
Cylinder bore | 58.1 mm (2.3 in) 78 mm (3.1 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) 49.6 mm (2.0 in) 47.9 mm (1.9 in) |
Valvetrain | 48-valve, DOHC, four-valves per cylinder [1] [2] [3] |
Compression ratio | 12.0:1-12.9:1 [4] |
Combustion | |
Fuel system | Carburetor Electronic fuel injection |
Fuel type | Gasoline |
Cooling system | Water-cooled |
Output | |
Power output | 210–805 hp (157–600 kW; 213–816 PS) [5] [6] |
Torque output | 110–370 lb⋅ft (149–502 N⋅m) [7] [8] |
Dimensions | |
Dry weight | 120–160 kg (264.6–352.7 lb) [9] |
Chronology | |
Predecessor | Honda RA16 engine |
Successor | Honda RA6 hybrid 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, [10] [11] and ending with the 3.0-litre RA273E in 1968. [5] [12] This would be followed by a 21-year hiatus, until Honda reintroduced the new 3.5-litre RA121E in 1991. [13] The RA121E would go down as the last V12 engine to win a Formula One World Championship. [14] Honda's last-ever V12 engine, the RA122E/B , raced in 1992. [15]
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