Hi thank you for your post due to the age of the bike and not knowing it's past history I thought I would play it safe and replace the little end bearing and replacing the rings etc, the bore is in very good condition, your post has been very helpful, may be a rebore and new piston is the way to go or am I being to fussy the bike runs well but has a bit of piston slap (is this usual for this type of engine). Thanks for your help.
I have a ty250 1974 and the piston is stamped next to the arrow on the piston 6-33 can anyone advise me what this means as want to put a new set of piston rings in and not sure what size is required from the id markings on the piston . Thanks.
TY 250 piston stamped id markings
in Yamaha
Posted
guys thanks for info on your posts