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

Surface Variation

Cylinder Head Maximum Flatness Variation Over 1.0 in 0.001
Cylinder Head Maximum Flatness Variation Over 60 in 0.002 in
Cylinder Head Maximum Overall Flatness Variation 0.003 in
Do Not Resurface If The Overall Measurement Is Less Than 0.003 in
Exhaust 1.1436 in
Exhaust 0.00150 - 0.00320 in
Replace The Head If The Overall Measurement Is More Than 0.010
Resurface The Head If The Overall Measurement Is More Than 0.003 - 0.010
Runout 0.00196 in