May 8, 2024
Took apart the valve heads and removed the valves, springs and valve seals. used a tool I got off amazon, that worked ok, but I needed to buy an better qulality threaded rod that wouldn’t strip from the local bolt supply store. Glad I got the threaded rod, because it too would strip and I needed to cut new lengths from time to time.
Next was valve lapping. I had a bit of trouble getting the valve lapping suction cup to stick to the rough surface of the valves. I smoothed them out with scotch brite, then painted them to get a smooth surface. After this the suction up stuck well, and the paint gave a good indication of how much grinding was done and how smooth the surface looked. Even after significant grinding/lapping there were some remaining pits. Didn’t want to lap further to go past the specs. No perfect, but better than it was before. I checked for leaks, and there were none. This is as much as I’m going to do. If it needs redoing, I guess I’ll redo it.
Mad MX5 