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828 Review
72 Karma

Review on πŸ”§ Permatex 80036 Valve Grinding Compound: Precision in 1.5 oz. Gray Package by John Hashman

Revainrating 2 out of 5

Too rough, unusable for my application

Too rough for modern precision engine valves. It may be fine for lapping valves on a 1948 tractor, but too coarse for my use on motorcycle valves. It literally feels like road gravel suspended in heavy fuel oil. They don't actually give a grit rating on the packaging. I ended up finding a much better two-grain combo pack (120 and 280) at my local auto parts store.

Pros
  • Easy to read control panel
Cons
  • Slightly wrinkled