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

Valve, Intake/Exhaust

Face Angle 45 - 45.5 Degrees (deg)
Head Diameter Intake 1.915 - 1.925 Inch (in)
Head Diameter Exhaust 1.575 - 1.585 Inch (in)
Length-Intake (Overall) 4.055 Inch (in)
Length-Exhaust (Overall) 4.043 Inch (in)
Valve Margin-Intake 0.047 Inch (in)
Service Limit 0.027 Inch (in)
Valve Margin-Exhaust 0.079 Inch (in)
Service Limit 0.059 Inch (in)
Valve Stem Tip Height 1.929 Inch (in)
Stem Diameter-Intake 0.313 - 0.314 Inch (in)
Stem Diameter-Exhaust 0.312 - 0.3125 Inch (in)
Stem-to-Guide Clearance-Intake 0.001 - 0.002 Inch (in)
Service Limit 0.004 Inch (in)
Stem-to-Guide Clearance-Exhaust 0.0019 - 0.003 Inch (in)
Service limit 0.0071 Inch (in)