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]
| Honda V12 engine | |
|---|---|
 | |
| Overview | |
| Manufacturer |  Honda |
| Designer | Yoshio Nakamura (1964-1968) Osamu Goto (1991-1992) |
| Production | 1964–1968, 1991–1992 |
| Layout | |
| Configuration | 60°-75° V12 |
| Displacement | 1.5–3.5 L (91.5–213.6 cu 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 |
Applications edit
- Honda RA271
- Honda RA272
- Honda RA273
- Honda RA300
- Honda RA301
- RC-F1 1.0X (RC100) / RC-F1 1.5X (RC101) (prototypes; never raced)
- McLaren MP4/6
- McLaren MP4/7A
Grand Prix engine results edit
- 1 World Constructors' Championships.
- 1 World Drivers' Championships.
- 15 race wins.
- 12 pole positions.
- 35 podium finishes
References edit
- ^ "F1: Honda's first Formula 1 engine, almost 50 years ago (+video) | Car News | Auto123". auto123.com.
- ^ "1965 Honda RA272". conceptcarz.com.
- ^ "Honda RA271/272 1.5 Litre V12 1964/5 GP Cars…". December 12, 2014.
- ^ "Specifications of 50 famous racing engines up to 1994 - Page 17 - F1technical.net". www.f1technical.net.
- ^ a b "Engine Honda". Statsf1.com.
- ^ "Honda Global | Formula One Entry: The Initial Phase / 1964". global.honda.
- ^ "1990's F1 Engine Torque graphs - F1technical.net". www.f1technical.net.
- ^ "Spicer Horsepower and Torque Calculator". spicerparts.com.
- ^ "Summary of Honda Formula One Engine in Third-Era Activities" (PDF). F1-forecast.com. Retrieved 10 November 2021.
- ^ "When Honda Brought a 1.5-Liter V-12 to Formula 1". Roadandtrack.com. 2 October 2020.
- ^ "F1: Honda's first Formula 1 engine, almost 50 years ago (+video) | Car News". Auto123.com.
- ^ "1967 Honda RA300 F1 Car - 3.0L V12 Engine Sound!". YouTube. Retrieved 10 November 2021.
- ^ "1991 McLaren MP4/6 F1 Sound - Honda 3.5 V12 Engine Screams at Goodwood". YouTube. Retrieved 10 November 2021.
- ^ "1991 McLaren MP4/6 Honda - Images, Specifications and Information". Ultimatecarpage.com. Retrieved 10 December 2019.
- ^ Engineering, Racecar (June 25, 2020). "Natural Aspirations".