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

Weight (Less Pin) Minimum 14.7 Ounce (US) (oz (US))
Maximum 15.1 Ounce (US) (oz (US))
Compression Height Minimum 1.599 inch
Maximum 1.603 inch
Piston to Bore Clearance Minimum 0.0008 Inch (in)
Maximum 0.0015 Inch (in)
Ring Groove Height Compression Rings Minimum 0.0602 inch
Maximum 0.0612 inch
Oil Control Ring Minimum 0.1589 inch
Maximum 0.1598 inch
Ring Groove Diameter Compression Ring #1 Minimum 3.48 Inch (in)
Maximum 3.49 Inch (in)
Compression Ring #2 Minimum 87.63 Millimeter (mm)
Maximum 87.88 Millimeter (mm)
Oil Control Ring Minimum 3.53 Inch (in)
Maximum 3.54 Inch (in)
Pin Bore Diameter Minimum 0.9312 inch
Maximum 0.9315 inch
Piston to Pin Clearance Minimum 0.0005 inch
Maximum 0.0009 inch