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 or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Piston Ring Gap & Groove Clearance

Piston Compression Ring End Gap (ProductionTop) (Measured in Cylinder Bore) 0.009 - 0.0149
Piston Compression Ring End Gap (Production2nd) (Measured in Cylinder Bore) 0.0173 - 0.0251
Piston Oil Ring End Gap (Production) (Measured In Cylinder Bore) 0.007 - 0.0271
Piston Compression Ring End Gap (ServiceTop) (Measured in Cylinder Bore) 0.009 - 0.0149 (Maximum)
Piston Compression Ring End Gap (Service2nd) (Measured in Cylinder Bore) 0.0173 - 0.0251 (Maximum)
Piston Oil Ring End Gap (Service Limit) (Measured in Cylinder Bore) 0.007 - 0.0271 (Maximum)
Piston Compression Ring Groove Clearance (ProductionTop) 0.00157 - 0.003346
Piston Compression Ring Groove Clearance (Production2nd) 0.00157 - 0.003149
Piston Oil Ring Groove Clearance (Production) 0.0004 - 0.00866
Piston Compression Ring Groove Clearance (ServiceTop) 0.00157 - 0.003346 (Maximum)
Piston Compression Ring Groove Clearance (Service2nd) 0.00157 - 0.003149 (Maximum)
Piston Oil Ring Groove Clearance (Service Limit) 0.0004 - 0.00866 (Maximum)