Trying to repair a damaged air cooled motorcycle cylinder head. With largest oversized (O.D.) valve guides, still unable to get a tight fit. What would be a suitable material to make a sleeve out of? I have some 6061 aluminum, but not sure it will stand up to the high temperatures, especially since the affected valve guide is on the exhaust side. The valve guide material is a silicon bronze and the head is aluminum.
17 years ago