Grinding intake and exhaust valve tips? - Toymods Car Club
4/11/2015 · Re: Grinding intake and exhaust valve tips? Hey guys, I contacted Ferrea and they say that at most 0.5mm from their heat-treated tip'd valves can be removed without issues. I would assume this would be different for vavles with pressed-in hard tips; where the engine design has direct interference on the valve .
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