Valve Inspection

Intake Valve Dimensions 

A Standard (New): 35.90-36.10 mm (1.413-1.421 in.) 

B Standard (New): 108.85-109.15 mm (4.285-4.297 in.) 

C Standard (New): 5.48-5.49 mm (0.2157-0.2161 in.) 

C Service Limit: 5.45 mm (0.215 in.) 

D Standard (New): 0.55-0.85 mm (0.022-0.033 in.) 

D Service Limit: 0.40 mm (0.016 in.) 

Exhaust Valve Dimensions 

A Standard (New): 30.90-31.10 mm (1.217-1.224 in.) 

B Standard (New): 107.60-107.90 mm (4.236-4.248 in.) 

C Standard (New): 5.45-5.46 mm (0.2146-0.2150 in.) 

C Service Limit: 5.42 mm (0.213 in.) 

D Standard (New): 0.85-1.15 mm (0.033-0.045 in.) 

D Service Limit: 0.70 mm (0.028 in.) 

Fig 1: Identifying Intake Valve All Dimensions

Courtesy of AMERICAN HONDA MOTOR CO., INC.