Cylinder Head
CYLINDER HEAD SPECIFICATIONS
| Item | Measurement | Qualification | Standard or New | Service Limit |
|---|---|---|---|---|
| Head | Warpage | 0.07 mm (0.0028 in.) | 0.08 mm (0.003 in.) | |
| Height | 119.9-120.1 mm (4.720-4.728 in.) | - | ||
| Camshaft | End play | 0.05-0.25 mm (0.002-0.010 in.) | 0.5 mm (0.02 in.) | |
| Camshaft-to-holder oil clearance | 0.045-0.084 mm (0.0018-0.0033 in.) | 0.100 mm (0.004 in.) | ||
| Total runout | 0.03 mm (0.001 in.) max. | 0.04 mm (0.002 in.) | ||
| Cam lobe height | Intake, primary | 35.3799 mm (1.39291 in.) | - | |
| Intake, secondary | 30.5291 mm (1.20193 in.) | - | ||
| Exhaust | 35.3877 mm (1.39321 in.) | - | ||
| Valve | Clearance (cold) | Intake | 0.15-0.19 mm (0.006-0.0007 in.) | - |
| Exhaust | 0.26-0.30 mm (0.010-0.012 in.) | - | ||
| Stem O.D. | Intake | 5.48-5.49 mm (0.2157-0.2161 in.) | 5.45 mm (0.215 in.) | |
| Exhaust | 5.45-5.46 mm (0.2146-0.2150 in.) | 5.42 mm (0.213 in.) | ||
| Stem-to-guide clearance | Intake | 0.020-0.050 mm (0.0008-0.0020 in.) | 0.08 mm (0.003 in.) | |
| Exhaust | 0.050-0.080 mm (0.0020-0.0031 in.) | 0.11 mm (0.004 in.) | ||
| Valve seat | Width | Intake | 0.850-1.150 mm (0.0335-0.0453 in.) | 1.60 mm (0.063 in.) |
| Exhaust | 1.250-1.550 mm (0.0492-0.0610 in.) | 2.00 mm (0.079 in.) | ||
| Stem installed height | Intake | 46.1-46.5 mm (1.815-1.831 in.) | 46.8 mm (1.843 in.) | |
| Exhaust | 46.2-46.6 mm (1.819-1.835 in.) | 46.9 mm (1.846 in.) | ||
| Valve spring | Free length | Intake | 50.52 mm (1.989 in.) | - |
| Exhaust | 57.37 mm (2.259 in.) | - | ||
| Valve guide | I.D. | Intake | 5.51-5.53 mm (0.217-0.218 in.) | 5.55 mm (0.219 in.) |
| Exhaust | 5.51-5.53 mm (0.217-0.218 in.) | 5.55 mm (0.219 in.) | ||
| Installed height | Intake | 15.85-16.35 mm (0.624-0.644 in.) | - | |
| Exhaust | 15.85-16.35 mm (0.624-0.644 in.) | - | ||
| Rocker arm | Arm-to-shaft clearance | Intake | 0.019-0.058 mm (0.0007-0.0023 in.) | 0.08 mm (0.003 in.) |
| Exhaust | 0.019-0.058 mm (0.0007-0.0023 in.) | 0.08 mm (0.003 in.) |