Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la
If it fails: lemon-manuals.org.ua

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Piston Ring, Engine

GENERAL SPECIFICATIONS

Piston Rings
Piston Ring End Gap - First Compression Ring - Measured in Cylinder Bore - Production 0.23 - 0.44 mm (0.009 - 0.017 inch)
Piston Ring End Gap - First Compression Ring - Measured in Cylinder Bore - Service 0.23 - 0.5 mm (0.009 - 0.0196 inch)
Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore - Production 0.44 - 0.7 mm (0.017 - 0.027 inch)
Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore - Service 0.44 - 0.76 mm (0.0173 - 0.03 inch)
Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore - Production 0.18 - 0.75 mm (0.007 - 0.029 inch)
Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore - Service 0.18 - 0.81 mm (0.007 - 0.032 inch)
Piston Ring to Groove Clearance - First Compression Ring - Production 0.04 - 0.085 mm (0.00157 - 0.00335 inch)
Piston Ring to Groove Clearance - First Compression Ring - Service 0.04 - 0.085 mm (0.00157 - 0.00335 inch)
Piston Ring to Groove Clearance - Second Compression Ring - Production 0.04 - 0.078 mm (0.00157 - 0.0031 inch)
Piston Ring to Groove Clearance - Second Compression Ring - Service 0.04 - 0.078 mm (0.00157 - 0.0031 inch)
Piston Ring to Groove Clearance - Oil Control Ring - Production 0.012 - 0.2 mm (0.0005 - 0.0078 inch)
Piston Ring to Groove Clearance - Oil Control Ring - Service 0.012 - 0.2 mm (0.0005 - 0.0078 inch)