healthy EJ20T compression test number????

hellbugged 48's and straight cuts

5,080 posts · joined Apr 2003 · 2 Jun 2009, 2:39 pm

#716200

anyone know the PSI figure off hand for a compression test on a subaru EJ20T??

healthy number?

bad number?

hellbugged 48's and straight cuts

5,080 posts · joined Apr 2003 · 2 Jun 2009, 7:04 pm

#716254

prime time bump

ratbug aka toddy101

439 posts · joined Jan 2003 · 2 Jun 2009, 9:02 pm

#716300

I think I was getting about 10-10.5bar, so about 150-160psi?

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hellbugged 48's and straight cuts

5,080 posts · joined Apr 2003 · 2 Jun 2009, 9:19 pm

#716308

👍 tar, i'm getting 165PSI on the two i checked, so sounds good to me............might be able to stop grinding my teeth and have a decent nights sleep instead

seagull Compulsive Aussie Vee Dubber

4,979 posts · joined Dec 2003 · 3 Jun 2009, 9:20 pm

#716435

Damo , 165 psi would be what I would expecting . I have seen 190 psi on newer motors

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hellbugged 48's and straight cuts

5,080 posts · joined Apr 2003 · 4 Jun 2009, 6:30 am

#716487

thanx Neil

jzk25 Casual Dubber

49 posts · joined Jul 2006 · 6 Jun 2009, 7:37 am

#716908

165 is very healthy. Must be a late 90's engine at that. The old clanger RS turbo engines only have about 135psi. As long as they are even and above 130ish it is fine. When EJ20T's lose compression they do it in a big way as ring lands break or pistons melt. The engines don't really wear out, they will do 500k kms without wearing the crosshatching off if they don't get cooked to death in the mean time(this is what normally happens).

hellbugged 48's and straight cuts

5,080 posts · joined Apr 2003 · 6 Jun 2009, 7:41 am

#716909

cool, yeah engine 2002.......wouldn't have done 20 hours work yet.