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Top End Rebuild

792 Views 11 Replies 4 Participants Last post by  ttinjuneer
2015 Polaris Ranger 570 Mid Size Crew

I am currently rebuilding the top end. An automotive mechanic I know and respect told me new rings will not seat properly using synthetic oil. He recommends breaking in with conventional oil.

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Any other things recommended to do while the top end is apart?
Hope and pray when you have it all done and running the bottom end holds out. Meaning rod knock / bearings go bad If everything works out for you change the oil when it starts to get brownish / dirty, oil is cheap compared to rebuilding the engine I did the same thing to mine as your doing then the crankshaft bearing let loose after i did the top end
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