Valve Clearance

GENERAL SPECIFICATIONS

Valve Train
Valve clearance - intake 0.0445 mm (0.0018 inch)
Valve clearance - exhaust 0.0705 mm (0.0028 inch)
Valve guide bore diameter 7.015-7.044 mm (0.2762-0.2773 inch)
Valve stem diameter - intake (standard) 6.975-6.995 mm (0.2754-0.2746 inch)
Valve stem diameter - exhaust (standard) 6.949-6.970 mm (0.2744-0.2736 inch)
Valve stem-to-guide clearance - intake 0.020-0.069 mm (0.00078-0.00272 inch)
Valve stem-to-guide clearance - exhaust 0.046-0.095 mm (0.0018-0.0037 inch)
Valve head diameter - intake 37 mm (1.46 inch)
Valve head diameter - exhaust 30 mm (1.18 inch)
Valve head diameter - gauge diameters 35.0 and 28.0 mm (1.378-1.102 inch)
Valve face runout 0.05 mm (0.002 inch)
Valve face angle 45.5 degrees
Valve seat width 1.8-2.2 mm (0.071-0.086 inch)
Valve seat runout (TIR) max. 0.05 mm (0.002 inch)
Valve seat angle 45 degrees
Valve spring free length (approx.) 45.5 mm (1.6598 inch)
Valve spring squareness 2 degrees
Valve spring compression pressure 711.47 N @ 26.19 mm (15 9.9 ft. lbs. @ 1.031 inch)
Valve spring installed height 36.14 mm (1.4228 inch)
Valve spring installed pressure 289.1 N @ 36.14 mm (64.99 ft. lbs. @ 1.4228 inch)
Valve spring installed pressure - service limit 10% loss @ pressure 28.02 mm (1.103 inch)