I suggest that you don't do this. Nothing good will come from it, will likely ruin or make worse the top ring seal, and could ruin the block. Probably the worst tool ever made.
The ridge is approximately .002 to .005.
If I dont use the reamer will it hurt the new rings that I put on the stock pistons when the engine is running?
What grit should I use on the cylinders for cast iron rings?
