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hey???compression?? good or bad?

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Old 05-03-2005 | 09:32 PM
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Default hey???compression?? good or bad?

i did a compression test.. and i got 130-110-110-150 for my gsr turbo.. ?? what does that mean pleasE???
Old 05-03-2005 | 10:20 PM
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Your motor is a rebuild soon. I'd put that turbo project on hold.
Old 05-03-2005 | 10:32 PM
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Those numbers are awful. Looks like your top rings are shot and there is a potential head gasket issue between the 2nd and 3rd cylinder. If a leakdown test yields similar numbers, I would recommend a rebuild or, at the very least, a piston ring, head gasket, and valve seal replacement.
Old 05-04-2005 | 01:59 PM
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How do you do a compression test? And what numbers are normal?
Old 05-04-2005 | 02:02 PM
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Originally Posted by nextphase
i did a compression test.. and i got 130-110-110-150 for my gsr turbo.. ?? what does that mean pleasE???
That's real bad. My GS-R sedan with 225K miles on it has 210 across the board. My 94 Si with 330K miles has 185 across the board.
Old 05-04-2005 | 03:11 PM
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Originally Posted by Shmoo
Those numbers are awful. Looks like your top rings are shot and there is a potential head gasket issue between the 2nd and 3rd cylinder. If a leakdown test yields similar numbers, I would recommend a rebuild or, at the very least, a piston ring, head gasket, and valve seal replacement.

I agree. Looks like your rings are fried, and you might have ringland damage...and possible headgasket damage.
Old 05-04-2005 | 05:03 PM
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110 is really low something is up with your engine




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