Reply to "Piston damage found...."

Thanks for the valuable information.... And carnage pictures.

I think I found this issue before any real damage could occur, guess being a bit OCD does pay off every now and then. I only opened the engine because it was out of the car for the other R&M issues.

This engine is already .30 over by previous owner. The bores look fine with the crosshatch still looking fresh, just a very little shows where the piston damage shows, looks like a light hone will work there, it is in the machine shop now waiting for me to decide what to do to it. It is getting all new bearings, already have new cam/lifters, etc on the shelf. Just have to decide what my wallets pain level is for the bottom end. I think it is screaming at me louder than the wife at this point since I started the back end rebuild project. I did not even consider the rod nuts, ordering today with the oil pump and second set of bearings for the upper halfs. As for the top ridge on the cylinders, there is none that I can feel at all.

How can I tell the difference between one piece and 2 piece valves? Can I tell by the retainers, magnet? The heads have already been done and are waiting all wrapped up on the shelf to go on. Since I have to take the inner spring off anyway for cam break-in, I can break down the heads now and recheck to make sure I have the one piece valves....boy I hope so...there goes the screaming wallet again.

Again thanks for the information!

Angelo