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Valves surface

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20170730_200555.jpg20170730_200607.jpg

 

Cleaned valves a little, saw this.

 

Is this just carbon layers peeling off, or is this part of the actual metal chipped off?

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Just carbon build up. What really matters is the side of the valve that contacts the valve seat. It is easy to damage if not careful and in some cases, the only way to 'fix' is to replace and have the valve seats cut with specialized seat cutters (SERDI machine).)

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