| And it's not likely soft valves if the new valves are having the same problem because the soft valves were taken off the market long ago. However, it could be a similar issue to the soft valve issue. The problem back then was that the valves were actually too hard (harder than the valves they were replaced with) and were bouncing off the head upon closure... the impact is what caused the wear pattern and ultimately the name. So I would suspect there is something causing your valve to impact the head too forcefully. What would cause that, I am not sure... I've never dissected a Z32 cylinder head before. Perhaps a spring issue or something misaligned.
"When you say this, will you be surprised if your arguments seem to move about instead of staying put? And will you accuse me of being Daedalus who makes them move, though you are yourself much more skillful than Daedalus and make them go around in a circle? Or do you not realize that our argument has moved around and come again to the same place? [...] Or do you not remember?" - Socrates |
