I’m rebuilding the top end of my 1978 cb400t. New valve seals, lapping the valves, cleaning out carbon, new pistons, rings, etc.
So far everything looks good on the head except for pitting around the valve seats so I’m lapping the valves.
While doing this I noticed that two of the valves don’t slide smoothly in their valve guides. None of the valves wobble. They all fit very snuggly but 2 of them kind of hang up when sliding in and out. I’m worried they might stick when the engine is running.
Is there any way to clean out a valve guide and restore it to original condition?
So far everything looks good on the head except for pitting around the valve seats so I’m lapping the valves.
While doing this I noticed that two of the valves don’t slide smoothly in their valve guides. None of the valves wobble. They all fit very snuggly but 2 of them kind of hang up when sliding in and out. I’m worried they might stick when the engine is running.
Is there any way to clean out a valve guide and restore it to original condition?