Measuring Pistons

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Using a 75-100 mm outside micrometer , take a measurement approx. 10 mm from the lower edge of the piston, at a 90° angle to the piston pin axis -1- .

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Measuring pistons

Piston diameter	New in mm	Wear limit in mm
Nominal measurement Information Nominal measurement without coating (thickness = 0.02 mm). The coating wears off.	84.45	84.433