Cylinder Head
MEASUREMENT SPECIFICATION
| Item | Measurement | Qualification | Standard or New | Service Limit |
|---|---|---|---|---|
| Head | Warpage | - | 0.05 mm (0.002 in.) | |
| Height | 119.95-120.05 mm (4.722-4.726 in.) | - | ||
| Camshaft | End play | 0.05-0.15 mm (0.002-0.006 in.) | 0.5 mm (0.02 in.) | |
| Camshaft-to-holder oil clearance | 0.050-0.089 mm (0.0020-0.0035 in.) | 0.15 mm (0.006 in.) | ||
| Total runout | 0.03 mm (0.001 in.) | 0.04 mm (0.002 in.) | ||
| Cam lobe height | Intake, primary | 36.332 mm (1.4304 in.) | - | |
| Intake, secondary | 32.263 mm (1.2702 in.) | - | ||
| Exhaust | 36.246 mm (1.4270 in.) | - | ||
| Valve | Clearance (cold) | Intake | 0.18-0.22 mm (0.007-0.009 in.) | - |
| Exhaust | 0.21-0.25 mm (0.008-0.010 in.) | - | ||
| Stem O.D. | Intake | 5.480-5.490 mm (0.2157-0.2161 in.) | 5.44 mm (0.214 in.) | |
| Exhaust | 5.450-5.460 mm (0.2146-0.2150 in.) | 5.41 mm (0.213 in.) | ||
| Stem-to-guide clearance | Intake | 0.02-0.05 mm (0.001-0.002 in.) | 0.09 mm (0.004 in.) | |
| Exhaust | 0.05-0.08 mm (0.002-0.003 in.) | 0.13 mm (0.005 in.) | ||
| Valve seat | Width | Intake | 0.85-1.15 mm (0.033-0.045 in.) | 1.60 mm (0.063 in.) |
| Exhaust | 1.25-1.55 mm (0.049-0.061 in.) | 2.00 mm (0.079 in.) | ||
| Stem installed height | Intake | 53.00-53.80 mm (2.087-2.118 in.) | 54.14 mm (2.131 in.) | |
| Exhaust | 52.91-53.71 mm (2.083-2.115 in.) | 54.05 mm (2.128 in.) | ||
| Valve spring | Free length | Intake | 68.29 mm (2.689 in.) | - |
| Exhaust | 71.11 mm (2.800 in.) | - | ||
| Valve guide | I.D. | Intake/Exhaust | 5.51-5.53 mm (0.217-0.218 in.) | 5.55 mm (0.219 in.) |
| Installed height | Intake/Exhaust | 17.85-18.35 mm (0.703-0.722 in.) | - | |
| Rocker arm | Arm-to-shaft clearance | Intake | 0.026-0.067 mm (0.0010-0.0026 in.) | 0.08 mm (0.003 in.) |
| Exhaust | 0.019-0.058 mm (0.0007-0.0023 in.) | 0.08 mm (0.003 in.) |