Top hat polish
What is the pourpose of polishing the top hat? I don’t see where anything slides or moves on it. If you polish much off the stem
Where it fits in the valve, it would become loose! Please enlighten me on why this thing needs to be shiny.
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Long enough for the smoothness to make much difference.
the theory works, port and polishing been happening for years…. just ask a wrench head why they port and polish the intake and exhaust runners on a hypo engine :biggrinn:
Good point!