Engine Honda G25A

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.

Leave a Reply

Your email address will not be published. Required fields are marked *