Piston Ring Groove Clearance, Checking

WARNING: This page is about a different car, the 2014 Volkswagen Touareg, 2013 Volkswagen Touareg, 2012 Volkswagen Touareg, and 2011 Volkswagen Touareg. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Checking Piston Ring Groove Clearance

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Clean the ring groove of piston before checking.

Piston Ring Dimensions in mm	New	Wear Limit
1. Compression ring	0.120 to 0.160	0.175
2. Compression ring	0.020 to 0.090	0.115
Oil scraping ring	0.020 to 0.090	0.115