2008 xp 800 top end rebuild

[Chrisjklassen]

Hey I have a 2008 skidoo summit xp (Everest) 800. I have had a bog and it doesn't seem to make good power and I am not able to hit 8200rpm. It is missing at full throttle. Here's what I have checked. I have taken both rave valves out and cleaned them and put new springs in. I have taken the carbs completely apart and cleaned them. I have checked compression and is 115 and 117 psi cold. I have put new fuel in I have changed the coil I have put new plugs in and I have swapped computers from a sled that runs fine and no change. Is there anything that I am missing? And secondly I am going to rebuild the top end. Just wondering if there is something left to Check before I do the top end?

 

[moyiesledhead]

Yup. I would have started with your clutches.

 

[duck]

Sounds like a bad roller in the primary....

 

[Chrisjklassen]

Ok never thought that the clutch could be the problem. Will check that out thanks

 

[takethebounce]

Before doing the top end I would check the crank run out. All you may be doing is adding New pistons to a bad motor.

And as already mentioned your better off checking all your clutching for worn parts for your miss and rpm loss.

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