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 piston ring groove before checking.

Piston Ring	New mm	Wear Limit mm
1. Compression ring	0.04 to 0.08	0.20
2. Compression ring	0.03 to 0.07	0.20
Oil Scraping Ring	0.02 to 0.06	0.15