After reading your post, I did a search for fine clover lapping compound. Found various grits but not ?fine? specifically. Would 600 be good? (1st timer?actually on Nissan 300zx heads).
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valve lapping process
- Thread starter alke46
- Start date
After reading your post, I did a search for fine clover lapping compound. Found various grits but not ?fine? specifically. Would 600 be good? (1st timer?actually on Nissan 300zx heads).
I?ve done many lapping jobs with a drill and compounds, 426 Hemi,440 and 383 Mopars,64 327-365hp Vetteand others, but only on heads that had a good valve job already. I just did my one owner,me, 95 Jeep Cherokee 4.0 with 245,000 miles and guides still within spec. Had a blown head gasket due to stuck thermostat. I used a slow speed reversible drill a rubber hose on the upper valve stem and permatex compound. Slow and consistent speed, reverse every few minutes got all twelve seats in beautiful shape. Pushing the valves all closed no springs,and filling the ports with water showed no leaks at all nearly 8 hrs later. Drained and filled ports with carb cleaner and another check in about one hour again no leaks at all. Reassembled and it runs smooth as silk.
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