All this talk about ball hones and boring machines------------

I would not even dream of taking a hone to a chrome plated glow engine cylinder. Thats why I use the scotch brite pad and toothpaste. It doesn't scratch or leave any marks at all. All it does it work loose the glazed on castor oil and polish up the cylinder a little bit. Usually takes about 5 minutes.

According to some very knowledgable folks on this board--you don't need to hone a chrome or nakasil lined cylinder. It's a factory plated system and is as perfect as it can ever get. And if you did run a hone down in it--you'd most likely ruin the cylinder because the plating is only a few thousandths thick. The new ring will seat on that chrome plating if you just knock the burned on castor off it (glaze)

I'll stick to the toothpaste and scotch brite pads. It's worked in the past on a ST .90 engine and an OS46FX-Heli engine.