Standards and Service Limits

Cylinder Head

 2-3  

Item Measurement Qualification Standard or New Service Limit
Head Warpage   - 0.05 mm (0.002 in.)
Height   103.95-104.05 mm

(4.093-4.096 in.)

 -
Camshaft End play   0.05-0.20 mm

(0.002-0.008 in.)

 0.4 mm (0.02 in.)
Camshaft-to-holder oil clearance No.1 journal 0.030-0.069 mm

(0.001-0.003 in.)

 0.15 mm (0.006 in.)
No.2, 3, 4, 5 journals 0.060-0.099 mm

(0.002-0.004 in.)

 0.15 mm (0.006 in.)
Total runout   0.03 mm (0.001 in.) max. 0.04 mm (0.002 in.)
Cam lobe height Intake, primary 32.791 mm (1.2910 in.) -
Intake, mid 35.534 mm (1.3990 in.) -
Intake, secondary 32.678 mm (1.2865 in.) -
Exhaust, primary 32.772 mm (1.2902 in.) -
Exhaust, mid 34.768 mm (1.3688 in.) -
Exhaust, secondary 32.661 mm (1.2859 in.) -
Valves Clearance (cold) Intake 0.21-0.25 mm (0.008-0.010 in.) -
Exhaust 0.25-0.29 mm (0.010-0.011 in.) -
Stem O.D. Intake 5.475-5.485 mm (0.2156-0.2159 in.) 5.445 mm (0.214 in.)
Exhaust 5.450-5.460 mm (0.2146-0.2150 in.) 5.42 mm (0.213 in.)
Stem-to-guide clearance Intake 0.030-0.055 mm (0.0012-0.0022 in.) 0.08 mm (0.003 in.)
Exhaust 0.055-0.080 mm (0.0022-0.0031 in.) 0.11 mm (0.004 in.)
Valve seats Width Intake 1.25-1.55 mm (0.049-0.061 in.) 2.00 mm (0.079 in.)
Exhaust 1.25-1.55 mm (0.049-0.061 in.) 2.00 mm (0.079 in.)
Stem installed height Intake 40.8-41.0 mm (1.606-1.614 in.) -
Exhaust 54.6-54.8 mm (2.150-2.157 in.) -
Valve springs Free length Intake, inner 45.22 mm (1.780 in.) -
Exhaust, inner 45.50 mm (1.791 in.) -
Intake, outer 50.86 mm (2.002 in.) -
Exhaust, outer 51.81 mm (2.040 in.) -
Valve guides I.D. Intake 5.515-5.530 mm

(0.2171-0.2177 in.)

 5.55 mm (0.219 in.)
Exhaust 5.515-5.530 mm

(0.2171-0.2177 in.)

 5.55 mm (0.219 in.)
Installed height Intake 15.2-16.2 mm (0.598-0.638 in.) -
Exhaust 15.5-16.5 mm (0.610-0.650 in.) -
Rocker arms Arm-to-shaft clearance Intake 0.025-0.052 mm

(0.0010-0.0020 in.)

 0.08 mm (0.003 in.)
Exhaust 0.025-0.052 mm

(0.0010-0.0020 in.)

 0.08 mm (0.003 in.)

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