| Yamaha OX77[1] | |
| Manufacturer: | Yamaha |
| Production: | 1987–1988 |
| Configuration: | 90° V8 |
| Displacement: | 2997cc |
| Bore: | 85.67mm |
| Stroke: | 64.9mm |
| Block: | Aluminum alloy |
| Head: | Aluminum alloy |
| Valvetrain: | 5-valve DOHC |
| Power: | ~450hp |
| Torque: | ~260lb.ft |
| Predecessor: | Yamaha OX66 |
| Successor: | Yamaha OX88 |
| Coolingsystem: | Single water pump |
| Fueltype: | Gasoline |
| Oilsystem: | Dry sump |
The Yamaha OX77 is a naturally aspirated gasoline-powered V8 racing engine, developed and built by Yamaha for Formula 3000, specifically the Japanese Formula 3000 Championship, between 1987 and 1988. It is derived from the Cosworth DFV engine,[2] but uses 5 valves per cylinder instead of the DFV's 4.[3]
This engine notably won the 1988 Japanese Formula 3000 Championship, being driven by Aguri Suzuki.[4] [5] [6]