From 1989 to 1998, the 2.0-liter Honda G20A gasoline engine was manufactured in Japan and fitted to several of the company’s large models, including the Ascot, Rafaga, Saber, Inspire, and Vigor. A widely accepted legend states that this power unit was developed based on a Formula 1 car engine.
The G25A internal combustion engine is another model in the G-series.
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 | 1996 |
| Fuel system | injector |
| Power output, hp | 155 – 160 |
| Torque output, Nm | 185 |
| Cylinder block | aluminum R5 |
| Block head | aluminum 20v |
| Cylinder bore, mm | 82 |
| Piston stroke, mm | 75.6 |
| Compression ratio | 9.7 |
| 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 | petrol |
| Euro standards | EURO 1/2 |
| Fuel consumption, L/100 km (for Honda Ascot 1995) — city — highway — combined |
11.5 6.9 8.8 |
| Engine lifespan, km | ~350 000 |
| Weight, kg | 165 |
Disadvantages of the Honda G20A engine
Although this engine is thought to be dependable, there are issues with maintenance and replacement parts;
Owners lament frequent oil leaks from gaskets and seals on specialized forums;
The valve always bends when the timing belt breaks because it is built to last about 100,000 kilometers;
Idle speed frequently floats for a variety of reasons, beginning with the throttle and idle valve;
A straightforward valve adjustment frequently helps when the engine is unstable.