Compression Test Results

[slayer_1971]

What do you all think..

1994 R32 GTR

cylinder

1 140

2 135

3 135

4 135

5 130

6 130

are these acceptable????????????

ta

row

[Blitz]

What do you all think..

1994 R32 GTR

cylinder

1 140

2 135

3 135

4 135

5 130

6 130

are these acceptable????????????

ta

row

That compression is average and fairly common for an older engine

On the upside, those figures show fairly consistant wear across all 6 cylinders which is a good thing, as opposed to having big compression fluctuations cylinder to cylinder.

[carl h]

jeez and i thought my 140psi across rb20 was low.

those are acceptable but no where near spec, you are out of spec when you hit 127psi...

[MerlinTheHapyPig]

from r32 engine manual

compression is as follows for rb26dett

standard 12.0 kg/cm2 = 170.7psi

limit 9.0 kg/cm2 = 128psi

variance between cylinders 1.0kg/cm2 = 14psi

according to these specs, your engine is fine, though it is close to limit (128psi)

i comp tested a motor in the cordia i just bought (daily driver), which had suspect blown rings

was 95psi / 100psi / 165psi / 165psi <- that's when u gotta start worrying!!!

Edited June 8, 2006 by MerlinTheHapyPig