Check Piston-Ring Vertical Clearance

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2018 Porsche Cayenne, 2017 Porsche Cayenne, 2016 Porsche Cayenne, 2015 Porsche Cayenne, and 2014 Porsche Cayenne. However, it is still accessible from the selected car via links, so may be relevant.

Clean the piston ring groove before checking the clearance.

Fig 1: Checking Piston-Ring Vertical Clearance
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Piston-Ring Dimensions In mm	New In mm	Wear Limit In mm
1st Compression Ring	0.009... 0.130	0.160
2nd Compression Ring	0.050... 0.090	0.110
Oil Scraper Ring	0.030... 0.070	0.100