Hello,
I'm trying to restore my valve guides. I need iron ones, as I will be running on butane, which burns much hotter than normal fuel. I heard you can ream the old guides to size and then install valves with oversized stems. But I couldn't find any
Or is it a better idea to ream the guide out further and press in a new std size guide? What diameter would the hole for the guide need to be? Are there tool kits for this operation? I have a couple of heads of buddies to do, so I would like to own the tool. It costs about $ 300 just to have the 16 guides replaced here in Germany
THX,
Max