HI,
I am tearing down my first engine right now which is a 305. I wanted to learn everything so i decided to do the only engine that was laying around, which also smoked so i thought id check out the rings.

I just got the pistons out and two of the top rings were broken when i took them out so im suspecting that that was my problem?
My plan is to do this as cheaply as possible that way i dont spend a whole lot of money on this if it doesnt work. My question is, the ridge at the top of the the block where the piston doesnt quite go up to, how do i tell if its too big to just hone out or if it needs to be bored. The cylinders seem to be in great shape, but thats just a rookies opinion. The ridge to mean doesnt seem that big at all, but i know how a 0.001 inch makes a huge differance.

any help or info would be appreciated.
thanx
david