Compression Test Results

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Compression Test Results

Postby superalltrac » Mon Aug 16, 2004 8:38 pm

So guys I just did a test on my engine and the results for all 4 cylinders are 140-142 psi dry, after a few drops of oil up to 160 psi give or take. Let's hear what you guys have to say on what to do.

thx :shoots:
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Trevor,
1988 ST165 (ST185 turbo)
283,000 kms and still going
(well somewhat, haha)
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Postby Gary » Mon Aug 16, 2004 8:43 pm

Look fine to me, little low but still in the spec.

ST185 compression spec:
164 psi or more
minimum: 128 psi.
diff between each cylinder: 14 psi or less
93 ST185
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Postby toayoztan » Tue Aug 17, 2004 12:48 am

Looks a little low to me too. the wet test jumped a bit, but not enough to have blown piston rings (i believe it has to be around a 30psi jump?). Anyway, I guess it just suggests you have a bit weak piston rings...not blown though.

Bryan
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Postby mototebok » Tue Aug 17, 2004 9:49 am

Numbers look good for a ST165
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Postby ChrisD » Tue Aug 17, 2004 2:02 pm

edit
Last edited by ChrisD on Thu May 06, 2010 4:24 pm, edited 1 time in total.
1988 ST165
1994 ST205 WRC
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Postby superalltrac » Wed Aug 18, 2004 12:59 pm

thx guys.
Chris, no real plans just checking on the shape of the engine. I'll probably drive it till it dies then rebuild everything.
Trevor,
1988 ST165 (ST185 turbo)
283,000 kms and still going
(well somewhat, haha)
superalltrac
Club Member
 
Posts: 51
Joined: Thu Aug 12, 2004 12:36 pm
Location: Carstairs, AB Canada


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