Use a table ban saw to hack off the 340 piston crown .

In my day's i have seen guy's do crazy things.
I knew a guy in HS took a cylinder hone that had fine stone's.
The engine would not clean up with it, as to far gone, needed bored.
So what to do?
Put rough wet or dry sand paper in cylinder, insert hone on top sand paper.
Remembering to use of old dirty oil is best when doing so.
Then use fine stone's after.
Did you know you can sand lifters back flat too with a belt sander.
You drill a hole in wood put the lifter in and sand away with dads Craftsman belt sander.
I wonder of it was a bad idea to post this as someone's gonna read that and say cool i am doing that great idea.
Better to just slather an old piston with valve grinding compound and go up and down with it for a while with a drill, then clean up the last bit with the LISLE 15000 hone tool.