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Discussion Starter #1
What's the normal compresion an a 2001 xcsp 800?

Thanks,
 

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the manual says 140 and that's what i have in mine.
 

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Originally posted by weantright
[br]Stock at 850' it was 160psi. This was on a cold motor.
i think compression goes up on a hot motor though. someone correct me if i'm wrong.
 

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Um, i doubt like hell its got a 160 psi, and yes compression goes up as the motor gets warm.
 

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If I didn't change heads I would take a picture. Stock when cold it would read 160psi when new (200 miles), hot was down about 8 psi. New head reads 130-135 psi and runs much better. Remember this is not static compression!
 

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Discussion Starter #7
So 140 after running for 5 mintutes should be bang on.

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