Compression Test On Rb20det

[abu]

Hi

Did a search just before, didn't find the exact figure I was looking for, only peoples results with compression tests.

Just wondering what the standard compression is supposed to be on a R32 RB20DET?

I want to know the readings you should get on both WOT and closed.

Also what is the lowest to expect, and whats reasonable/safe for the age of the motor, mines done about 120,XXX KM's.

Will be doing one as soon as my car arrives home early this week.

Thanks in advance,

Abu

Edited July 29, 2007 by abu

[Guilt-Toy]

we did my mates rb20 couple of weeks ago and it had around 120 compression in all cyl. on WOT. closed is around 5psi less

Edited July 30, 2007 by Guilt-Toy

[limpus]

Don't know how accurate this is but when i did mine about 2 months ago it gave between 155-160psi across all 6 cylinders...

[r32woohoo]

i had 140 across all 6 about 3mths ago

[TTT]

hahahaha..

3 replies, all way off one another..

just ge the test done.

if each cylinder results are close to one another, then don't worry.

if a couple is more than like 10% lower than the rest, then worry

[abu]

  GTST said:

hahahaha..

3 replies, all way off one another..

just ge the test done.

if each cylinder results are close to one another, then don't worry.

if a couple is more than like 10% lower than the rest, then worry

Hahaha yep.

I was waiting for someone to reply with a definite answer, but seems as no one knows..

I searched for a while last night through the net and on the forums, but could only manage to get the same answers as above.

Yeah I know what your saying, but I sort of wanted to know how low is too low, and whats perfect, so I can sort of work out where mine stands in that comparison.

Ah well, will do it and see what I get!

Thanks guys,

Abu

Edited July 30, 2007 by abu

[r32woohoo]

120-130psi or less n i wouldnt be happy

130-150 is good

150-170 is excellent

like others have said, worry more about variance in the cylinders rather then the figures themselves

[abu]

  r32woohoo said:

120-130psi or less n i wouldnt be happy

130-150 is good

150-170 is excellent

like others have said, worry more about variance in the cylinders rather then the figures themselves

Thanks for that little table, thats pretty much what I was after.

Major variance in cylinders would definitely call for a bit of concern.

Thanks,

Abu