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1982yamaha225
02-14-2010, 02:45 PM
hey folks.. I have an 82 yamaha and I want to rebuild and hot rod it out.. heres how I want to modify it.
port and polish the head
mill the head
install a performance cam
advance the ignition

I have no problem running race gas due to the upped compression and timing. however I haven't rebuilt a Yamaha motor before so I have a few questions. first question I have is can I even mill the head? second is there enough piston to valve clearance for increased lift and milling the head. and will I be able to modify the timing chain and or gears after the head is milled? I think that's all the questions I have for now.. any input would be greatly appreciated..

MonroeMike
02-14-2010, 04:36 PM
Welcome to the board.

Yamaha didn't make a 225 in 1982, (83 was the first year).