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healthservices · 05-18-2014, 06:59 PM

When looking at the top of the piston, a telltale sign that the valves have touched the pistons is a small shiny crescent shape, where the valves touch.

While not a Porsche piston this will give an idea what the mark may look like.

05-18-2014, 06:59 PM	#25
healthservices Registered Boxster abuser Join Date: Oct 2011 Location: socal Posts: 1,014	When looking at the top of the piston, a telltale sign that the valves have touched the pistons is a small shiny crescent shape, where the valves touch. While not a Porsche piston this will give an idea what the mark may look like. Last edited by healthservices; 05-18-2014 at 08:50 PM.