Cylinder Head
| Engine | C 20 SEL | ||||
|---|---|---|---|---|---|
| Cylinder head height | mm | 134.00 | |||
| Valve seat width in cylinder head | |||||
| Inlet valve | mm | 1,0 to 1,5 | |||
| Exhaust valve | mm | 1.7 to 2.2 | |||
| Valve stem play | |||||
| Inlet valve | mm | 0.03 to 0.057 | |||
| Exhaust valve | mm | 0.04 to 0.067 | |||
| Installation height of the valve guide | mm | 13.70 to 14.00 | |||
| Perm. runout of the valve stem | |||||
| Intake valve | mm | 0.03 | |||
| Exhaust valve | mm | 0.03 | |||
| Valve system | |||||
| Valve clearance | mm | 0 | |||
| Valve lifter | Hydraulic valve lifter | ||||
| Rotocap | none |
Cylinder Head
| Engine | C 20 SEL | |||
|---|---|---|---|---|
| Valve dimensions | ||||
| Valve lengths - Production | ||||
| Intake valve | mm | 102.2 | ||
| Exhaust valve | mm | 92.3 | ||
| Valve lengths - Service | ||||
| Intake valve | mm | 101.7 | ||
| Exhaust valve | mm | 91.9 | ||
| Diameter of the valve head | ||||
| Intake valve | mm | 31.9 to 32.1 | ||
| Exhaust valve | mm | 28.9 to 29.1 | ||
| Angle at valve head | ||||
| Intake valve | � | 44 | ||
| Exhaust valve | � | 44 |
Cylinder Head
| Engine | C 20 SEL | ||||
|---|---|---|---|---|---|
| Valve dimensions (continued) | |||||
| Valve stem diameter | |||||
| Standard size K | |||||
| Intake valve | mm | 5.955 to 5.970 | |||
| Exhaust valve | mm | 5.945 to 5.960 | |||
| Oversize K1 (0.075) | |||||
| Intake valve | mm | 6.030 to 6.045 | |||
| Exhaust valve | mm | 6.020 to 6.035 | |||
| Oversize K2 (0.150) | |||||
| Intake valve | mm | 6.105 to 6.120 | |||
| Exhaust valve | mm | 6.095 to 6.110 | |||
| Valve guide inside diameter | |||||
| Standard size K | mm | 6.000 to 6.012 | |||
| Oversize K1 (0.075) | mm | 6.075 to 6.090 | |||
| Oversize K2 (0.150) | mm | 6.150 to 6.165 |
Cylinder Head
| Engine | C 20 SEL | ||||
|---|---|---|---|---|---|
| Camshaft | |||||
| Radial runout | mm | 0.06 | |||
| End play | mm | 0.040 to 0.144 | |||
| Cam lift | |||||
| Intake and exhaust valve | mm | 10.0 |