Honda Workshop Service and Repair Manuals

Valve Guide: Specifications

DIMENSIONS

Installed Height:

Intake ...................................................................................................................................................................  17.85-18.35 mm (0.703-0.722 inch)
Exhaust ................................................................................................................................................................  18.65-19.15 mm (0.734-0.754 inch)

Stem-To-Guide Clearance With Dial Indicator:

Intake:

Standard ............................................................................................................................................................  0.04-0.10 mm (0.002-0.004 inch)
Service Limit .......................................................................................................................................................................  0.16 mm (0.006 inch)

Exhaust:

Standard ............................................................................................................................................................  0.10-0.16 mm (0.004-0.006 inch)
Service limit .........................................................................................................................................................................  0.22 mm (0.009 inch)

Stem-To-Guide Clearance Alternate Method[1]:

Intake:

Standard ............................................................................................................................................................  0.02-0.05 mm (0.001-0.002 inch)
Service Limit .......................................................................................................................................................................  0.08 mm (0.003 inch)

Exhaust:

Standard ............................................................................................................................................................  0.05-0.08 mm (0.002-0.003 inch)
Service limit .........................................................................................................................................................................  0.11 mm (0.004 inch)

[1] Subtract the outer diameter of the valve stem from the inner diameter of the valve guide.