Aussieveedubbers · Non-VW Engine Conversions

healthy EJ20T compression test number????

https://forums.aussieveedubbers.com/threads/76945/healthy-ej20t-compression-test-number

hellbugged · 2 Jun 2009, 2:39 pm

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

healthy number?

bad number?

hellbugged · 2 Jun 2009, 7:04 pm

prime time bump

ratbug · 2 Jun 2009, 9:02 pm

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

hellbugged · 2 Jun 2009, 9:19 pm

👍 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 · 3 Jun 2009, 9:20 pm

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

hellbugged · 4 Jun 2009, 6:30 am

thanx Neil

jzk25 · 6 Jun 2009, 7:37 am

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 · 6 Jun 2009, 7:41 am

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