Cylinder Head
CYLINDER HEAD SPECIFICATION
| Item | Measurement | Qualification | Standard or New | Service Limit |
|---|---|---|---|---|
| Head | Warpage | 0.07 mm (0.0028 in) | 0.08 mm (0.0031 in) | |
| Height | 119.9-120.1 mm (4.720-4.728 in) | - | ||
| Camshaft | End play | 0.05-0.15 mm (0.002-0 006 in) | 0.3 mm (0.01 in) | |
| Camshaft-to-holder oil clearance | 0.050-0.089 mm (0.0020-0.0035 in) | 0.10 mm (0.004 in) | ||
| Total runout | 0.03 mm (0.001 in) max. | 0.04 mm (0.002 in) | ||
| Cam lobe height | Intake PRI | 29.700 mm (1.1693 in) | - | |
| Intake SEC | 35.854 mm (1.4116 in) | - | ||
| Exhaust PRI | 29.900 mm (1.1772 in) | - | ||
| Exhaust SEC | 35.470 mm (1.3965 in) | - | ||
| Valve | Clearance (cold) | Intake | 0.15-0.19 mm (0.006-0.007 in) | - |
| Exhaust | 0.24-0.28 mm (0.009-0.011 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) | 1.80 mm (0.071 in) |
| Exhaust | 1.250-1.550 mm (0.0492-0.0610 in) | 2.00 mm (0.079 in) | ||
| Stem installed height | Intake | 47.4-47.8 mm (1.866-1.882 in) | 48.1 mm (1.894 in) | |
| Exhaust | 47.3-47.7 mm (1.862-1.878 in) | 48.0 mm (1.890 in) | ||
| Valve spring | Free length | Intake (NIPPON HATSUJO) | 53.25 mm (2.096 in) | - |
| Intake (CHUO HATSUJO) | 53.26 mm (2.097 in) | - | ||
| Exhaust (SUN CALL) | 57.32 mm (2.257 in) | - | ||
| Exhaust (CHUO HATSUJO) | 57.31 mm (2.256 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 | 16.25-16.75 mm (0.640-0.659 in) | - | |
| Exhaust | 16.25-16.75 mm (0.640-0.659 in) | - | ||
| Rocker arm | Arm-to-shaft clearance | Intake | 0.017-0.045 mm (0.0007-0.0018 in) | 0.08 mm (0.003 in) |
| Exhaust | 0.017-0.045 mm (0.0007-0.0018 in) | 0.08 mm (0.003 in) |