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Old 07 March 2010, 03:36 PM
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Dasco
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Default Compression

What compression should i have on a 2.5 2006 sti fitted with 1998 version 4 sti heads and 1.6mm head gaskets when doing a compression test

Last edited by Dasco; 07 March 2010 at 03:56 PM.
Old 07 March 2010, 07:59 PM
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I should have thought that you would have approx 150psi +/-10psi

...but more to the point, do you get consistant test results across all 4 cylinders?
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