True Kev, didn't know it was nikilsil on that motor.
YOZ 450 wrote
If it's not scored or glazed then don't.. and what ever you do don't put any oill on the piston or rings when you re assemble it. I't will smoke like a 2 stroke and burn nuff oil.
Glaze busting used to be the thing to do in ye olde days when replacing pistons on roadgoing fourstrokes, as an alternative to reboring. You could get a degree of tolerable wear on iron barrels (or sleeves) that on a plated one would mean replating time. On the plus side plated ones do last a lot longer before needing any attention.In brief then, don't bother with glaze busting/honing plated barrels, they don't need it and if they are worn past limits the only answer is replating. FWIW I've changed a dozen or more 2-stroke pistons in plated bores and never once touched the bores. I would recommend oiling the rings though. A bit of smoke doesn't do any harm and it does prevent the possibility of scuffing due to dry startup and excessive friction.
Don't say i didn't worn you....
I'm not sure of the exact reason. The rings are different to most rings, has a corigated type between two normal ones. Oil just keeps seeping through. Oiled mine last time and would smoke untill the engine was well warm then wasn't too bad. Asked about it on thumpertalk and they discribed the exact symptoms and cure... worked a treat! no more smoke
Purchase the Manufactures Manuel for your model and year.
I know honda has a great manuel.
As for honeing the bore you dont have to.
Setting the piston rings in the proper alingment is more important. That can cause alot more problems and shorthen the life and performance dramaticly.
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