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: Specifications

Piston Outside Diameter Non Coated Skirt - at Size Point 3.8964 - 3.8997 inch
Piston Outside Diameter Measured Over Coating - at Size Point 3.897 - 3.899 inch
Piston to Bore Clearance Non Coated Skirt - Production 0.0005 - 0.0019 inch
Piston to Bore Clearance Non Coated Skirt - Service 0.0005 - 0.0029 inch
Piston to Bore Clearance Coated Skirt - Production -0.001 to +0.0011 inch
Piston to Bore Clearance Coating Worn Off - Service 0.0005 - 0.0029 inch
Piston Compression Ring Groove Clearance Production - Top 0.00157 - 0.0033 inch
Piston Compression Ring Groove Clearance Production - 2nd 0.002 - 0.0034 inch
Piston Oil Ring Groove Clearance Production -0.0003 to +0.0069 inch
Piston Compression Ring Groove Clearance Service - Top 0.00157 - 0.0033 inch - Maximum
Piston Compression Ring Groove Clearance Service - 2nd 0.002 - 0.0034 inch - Maximum
Piston Oil Ring Groove Clearance Service Limit 0.0003 to +0.0069 inch - Maximum