If you can catch your finger nail on the top cylinder where the rings were riding, you need to use a ridge reamer to cut the edge off, don't go too much. And it also may need to be bored, rent a micrometer and the attachments to measure the inside dia of the bore, at the bottom two directions (1 inline with the crankshaft and the other perpendicular to it, then do the same at the top of the bore where the wear is the greatest) Record your measurements and do all the cylinders recording as you go. Most likely if it has 100,000 mi or more it will need to be bored. The parts that wear out, bearings (rod, main, cam), timing chain, water pump, rings, gaskets need to be replaced and do a valve job on the heads. If you do not know how to rebuild an engine, I would recommend not only getting a manual but get a friend that has done it before to help or supervise, one mistake in the process can turn a engine into a boat anchor in an instant. Good Luck.
