Operation CHARM: Car repair manuals for everyone.

Piston Ring, Engine

Piston Ring End Gap - First Compression Ring - Measured in Cylinder Bore - Production 0.22-0.47 mm (0.0087-0.0185 inch)
Piston Ring End Gap - First Compression Ring - Measured in Cylinder Bore - Service 0.22-0.47 mm (0.0087-0.0185 inch)
Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore - Production 0.40-0.66 mm (0.0157-0.0259 inch)
Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore - Service 0.40-0.66 mm (0.0157-0.0259 inch)
Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore - Production 0.25-0.76 mm (0.0098-0.0299 inch)
Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore - Service 0.25-0.76 mm (0.0098-0.0299 inch)
Piston Ring to Groove Clearance - First Compression Ring - Production 0.030-0.10 mm (0.0012-0.0040 inch)
Piston Ring to Groove Clearance - First Compression Ring - Service 0.030-0.10 mm (0.0012-0.0040 inch)
Piston Ring to Groove Clearance - Second Compression Ring - Production 0.035-0.078 mm (0.0014-0.0031 inch)
Piston Ring to Groove Clearance - Second Compression Ring - Service 0.035-0.078 mm (0.0014-0.0031 inch)
Piston Ring to Groove Clearance - Oil Control Ring - Production 0.013-0.201 mm (0.0005-0.0079 inch)
Piston Ring to Groove Clearance - Oil Control Ring - Service 0.013-0.201 mm (0.0005-0.0079 inch)