rev (rebiuld)

[mjm2007]

hey guys i have an 04 rev with a 800HO engine in it ,,,was woundering what the milage should be before i look at rebiulding top end???????

 

[DRD]

If it has never been done, now would be a good time.

 

[Motley Doo]

Depends, did it get the ring update? I rebuilt my 01', almost same motor, and found that I probably would have been coming home on the end of a rope! Check the cylinder walls for the Nic. mine was worn through at the top, millenium gave me NiCom, supposidly better, no issues so far, and I'm running RKT replacement dual ring pistons, working great so far, about 500 miles on set up. Tear the head off(easy), and check your Nic. situation, and look into the exhaust port, give you a good look at the rings. Check cylinder pressures, look up in manual. All I can say is it's a lot cheaper to do it before it blows than after!

 

[Blu Du]

i had 3900 miles on the same sled when i had a ring spin. i think you will have ring problems before cylinder problems. the ring locating pins are small and will fall right out or wear off and let the ring spin and catch exhaust port.

 

[portgrinder]

over 2000 miles you are pushing it. ring locator pins will fall out and then its all over. I ride with lots of guys and if they didnt do a top end they all lost engines

 

[skidoochick564]

I just bought an '05 summit 800 ho from my friend who's a sled mechanic. He redid the top end at about 2200 I believe, and that was probably pushing it a little.