Currently rebuilding a spare engine with +1.00mm Mitaka pistons, and with the correct clearance, my ring gaps are lower than Yamaha specs. Standard is 0.3-0.45mm, and I am getting around 0.2mm. Never had this before on previous 2-strokes, and am reluctant to file the ends of the rings to increase the gaps, as I reckon the gaps will increase rapidly as they bed in to the bored/honed bores....
Advice from the collective is appreciated.
Thanks.
Ring Gaps.......
Moderator: rztom
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Re: Ring Gaps.......
Stick to the manual. If your ring gaps are too tight you'll have a far bigger problem when heat expands them and they have nowhere to go.
Re: Ring Gaps.......
You're right, I need to do this properly. Thanks.