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  1. D

    Grinding coated valves

    I have a question on grinding the valves. They look like a nitride coating on them. Looks like it is wearing threw some. Is it fine to grinder these valves. What's the pros and cons of grinding them.
  2. D

    Head surfacing?

    I got my heads back from being surfaced and my valve recession is .020. I wonder if that is to tight and I should get the valves sunk.