Raptor has 90 lbs of compression whats wrong?

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Jun 6, 2004 | 11:47 PM

400CatDriver

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Raptor has 90 lbs of compression whats wrong?

Our Raptor has less than 90 lbs of compression and it runs rough in mid range power. Any ideas out there on what is wrong with it?

Jun 6, 2004 | 11:55 PM

DEMENTED660R

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Raptor has 90 lbs of compression whats wrong?

Id say check you valves for any gaps, or check you rings for wear,
you might have some blow by.
Good luck

Jun 7, 2004 | 12:19 AM

CTracingraptor

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Raptor has 90 lbs of compression whats wrong?

How many hours do you think are on your raptor. You probabley just need to re-ring, but check you valves clearance first.

Jun 7, 2004 | 07:47 PM

400CatDriver

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Raptor has 90 lbs of compression whats wrong?

It's got a lot of hours on it and we run it pretty hard. I dropped it off at the mechanics today and I'm thinking we might go with a wiseco high compression piston to replace the stock one.

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