The 2.5-liter Honda G25A engine was produced at a Japanese company from 1989 to 1998 and was installed on such large models of the company as Inspire, Rafaga, Ascot, Vigor, Saber. A well-known legend says that this engine was created from the power unit of a Formula 1 car.
The G-series also includes an internal combustion engine: G20A.
The engine was installed on:
- Acura TL 1 (UA) in 1995 – 1998;
- Honda Ascot 2 (CE) in 1993 – 1997;
- Honda Inspire 1 (CC) in 1989 – 1995;
- Honda Inspire 2 (UA) in 1995 – 1998;
- Honda Rafaga 1 (CE) in 1993 – 1997;
- Honda Saber 1 (UA) in 1995 – 1998;
- Honda Vigor 3 (CB) in 1989 – 1995.
Specifications
| Production years | 1989-1998 |
| Displacement, cc | 2451 |
| Fuel system | injector |
| Power output, hp | 180 – 190 |
| Torque output, Nm | 225 – 235 |
| Cylinder block | aluminum R5 |
| Block head | aluminum 20v |
| Cylinder bore, mm | 85 |
| Piston stroke, mm | 86.4 |
| Compression ratio | 9.0 – 10 |
| Features | SOHC |
| Hydraulic lifters | no |
| Timing drive | belt |
| Phase regulator | no |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 4.3 |
| Fuel type | 92 |
| Euro standards | EURO 1/2 |
| Fuel consumption, L/100 km (for Honda Inspire 1996) — city — highway — combined |
12.6 7.8 9.7 |
| Engine lifespan, km | ~350 000 |
| Weight, kg | 170 |
Disadvantages of the Honda G25A engine
- There are no questions about the reliability of the motor, but there are problems with the service and spare parts;
- Most owners are bothered by frequent oil leaks from gaskets and seals;
- The timing belt runs about 100 thousand km, and when it breaks, the valve bends in 100% of cases;
- The reason for the floating engine speed is usually a dirty throttle or idle valve;
- There are no hydraulic lifters and valve clearances need to be adjusted every 40,000 km.
