Rings 1975 Honda CB125s

[Leo]

I'm looking to replace the rings in my 1975 Honda CB125s2. To the best of my knowledge the motor has never been work on. I would like to know:
1. do I keep the same piston or new one if so what size?
2. do I resize the cylinder if so to what?
Any information you can give?
Thanks!

 

[AlphaDogChoppers]

Start with the service manual. Wear limits are shown there. You can only answer these questions by tearing it down, inspecting and measuring the parts in question.

 

[Leo]

Your a good Man "AlphaDogChoppers" I will do that, but I bet I'm a litter older then you, like .24 cents a gal. of gas.

 

[AlphaDogChoppers]

I remember $0.299/gal.