hi as you can see it looks like there is missing a little chunk above my exhaust port. one day my bike rode very bad, bad compression. i found out that my piston had lost a chunk as you can see but no other damages but now it look like there is missing a little bit above my exhaust port. so maybe the piston took a piece with it on the way. Do i need a rebore? or could it just be oil and exhaust laying right on top and then it just looks like its missing? i cant feel it good enough with my fingers?
I did have a look. It's hard to tell. Naturally the piston is nackered. And that barrel is suspect. For the small price I'd have a specialist have a look. Personally.
Firstly you HAVE to scrap that pistn. That's buggered. And secondly I'd scrap the barrel. Personally. Probably be alright but at the end of the day, do you really want it seizing on you?