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Compression Test On Rb20det

abu

By abu,
in Engines & Forced Induction

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abu Grand Master

abu

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Posted (edited)

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

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abu Grand Master

abu

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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 by abu
abu Grand Master

abu

Posted
  • Author
Posted
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

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