Have the dreaded 07 rev sitting in the garage and want to use it as a loaner/spare sled. The top end needs to be done, and I have the dual ring pistons and gasket kit to doo the job. Just wondering if I should just hold on to the pistons and get a new short block, because it is an '07 after all, or install and ride the biotch. Would hate to take somebody new out and have the fawking thing lose a crank. Whatta you boys think?
'07 Summit X...crate engine or just top end
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pistonbroke800
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Id throw a new crank in it if you already have new top end gear for it. Brent Lindermann can get rebuild your bottom end with a bullet proof cank for under a grand id bet. Would be a cheaper route and probably more reliable than a new BRP short block. Either way that should be a nice back up/loaner sled for ya.
Lightningmike
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This may seem like a dumb question... but what is the issue with the 07 800 r
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From what I can tell the cranks are garbage. Two piece I think. This is the second motor in the sled already. Was dumb and replaced the first blown motor with a used `07 motor. Got it cheap from an insurance write off. Not that cheap now I know.
Lightningmike
Active VIP Member
Ok, i picked up a used one last winter with 3000km on it. Dont know if anything had been done to it. I guess I should be worried? Took to Valemont twice this spring and seemed strong.
tex78
Active VIP Member
It's not where the cranks are put together that is the problem.
It's the cases are to tight at the mag inner bearing.
The way to fix is machine a relief into the cases so when they swell from heat it doesn't over tighten the cases around the bearing it can swell in it self.
It's a machined grove in the bearing grove.
Motts machine outa st Albert did 2 for me and a few for others that I know.
Also sled head racing outa the states does it too ( he's known as big john )
About the same price which was 1000 assembled with a doo crank.
sent from my htc
It's the cases are to tight at the mag inner bearing.
The way to fix is machine a relief into the cases so when they swell from heat it doesn't over tighten the cases around the bearing it can swell in it self.
It's a machined grove in the bearing grove.
Motts machine outa st Albert did 2 for me and a few for others that I know.
Also sled head racing outa the states does it too ( he's known as big john )
About the same price which was 1000 assembled with a doo crank.
sent from my htc
tex78
Active VIP Member
A fixed right 07 800 r is still hard to beat.
Cause they had more power than the newer 800 r
sent from my htc
Cause they had more power than the newer 800 r
sent from my htc
Lightningmike
Active VIP Member
Thanks, I will look into it and see if I can get fixed before it grenades.
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Been trying that for 3 years, still got the fawking thing. Hard to sell, so i'm just gonna keep it. Get it fixed right and some of the boys will enjoy it.
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