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Polaris 800 Wide Bearing Compatibility

I

izzni

Well-known member
Mar 22, 2009
736
513
93
Vadnais Heights
I'm about to buy a 800 crankshaft that has a tough boy kit wide bearing on it. I'm also about to buy a crankcase that has been machined for a wide bearing. How concerned should I be that the crankcase has been machined for a bearing different than the one on the crankshaft, or are all of the wide bearings identical in the machining they require on the case?

Thanks,
Izzni
 

sled_guy

Well-known member
Premium Member
Jul 5, 2001
3,566
843
113
Riverton, Utah
Tough boy and wide bearing should be the same. There are 2 things that one does to the crankcase typically.
1 - Drill the oil hole down from the PTO cylinder
2 - make sure the oiler groove extends out to the seal so that oil can make it out to the outer part of the bearing.

sled_guy
 
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