Acura (Honda) Workshop Service and Repair Manuals

Valve Guide: Specifications

STEM TO GUIDE CLEARANCE: 

Intake: 
Standard (New) .................................................................................................................................................  0.025 - 0.055 mm (0.0010 - 0.0022 inch)
Service Limit ...................................................................................................................................................................................  0.08 mm (0.003 inch)

Exhaust: 
Standard (New) .................................................................................................................................................  0.050 - 0.080 mm (0.0020 - 0.0031 inch)
Service Limit ...................................................................................................................................................................................  0.11 mm (0.004 inch)

INNER DIAMETER: 

Intake: 
Standard (New) .........................................................................................................................................................  5.51 - 5.53 mm (0.217 - 0.218 inch)
Service Limit ...................................................................................................................................................................................  5.55 mm (0.219 inch)

Exhaust: 
Standard (New) .........................................................................................................................................................  5.51 - 5.53 mm (0.217 - 0.218 inch)
Service Limit ...................................................................................................................................................................................  5.55 mm (0.219 inch)

INSTALLED HEIGHT: 

Intake .....................................................................................................................................................................  12.55 - 13.05 mm (0.494 - 0.514 inch)
Exhaust ..................................................................................................................................................................  12.55 - 13.05 mm (0.494 - 0.514 inch)