1986 yamaha 70 hp top end rebuild ???

rdm429

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Mar 27, 2012
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Was looking into buying parts for topend rebuild(top piston scored) gonna replaced all 3 pistons, my question would be oem pistons are 3 ring setup, aftermarkets are 2 ring setup, which is best way to go and why?? Also caged or cageless topend bearings, not a lot of info available on this out there on this..
 

Houseboat er

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Apr 7, 2013
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Re: 1986 yamaha 70 hp top end rebuild ???

I would stay with the oem parts they normally fit and work the way the Manu intended
 
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