11 12 Cylinder Head - intake and exhaust valves
B36 ENGINE (COOPER CLUBMAN BASE):
CYLINDER HEAD WITH VALVE SEAT COVER SPECIFICATION
| Valve seat angle, both valves | ° | 45° |
| Correction angle: Outer, inlet valve | ° | 35° |
| Correction angle: Inner, intake valve | ° | 65° |
| Correction angle: Outer, exhaust valve | ° | 35° |
| Correction angle: Inner, exhaust valve | ° | 60° |
| Valve seat width: Intake | mm | 0.9 ±0.25 |
| Valve seat width: Exhaust | mm | 1.15 ±0.25 |
| Valve seat | ||
| Valve seat face: Outside dia. inlet | mm | 28.4 |
| Valve seat face: Outside dia. exhaust | mm | 27.1 |
B46 AND B48 ENGINES (COOPER CLUBMAN S AND JCW):
CYLINDER HEAD WITH VALVE SEAT COVER SPECIFICATION
| Valve seat angle, both valves | ° | 45° |
| Correction angle: Outer, inlet valve | ° | 35 ° |
| Correction angle: Inner, intake valve | ° | 60° |
| Correction angle: Outer, exhaust valve | ° | 35 ° |
| Correction angle: Inner, exhaust valve | ° | 60° |
| Valve seat width: Intake | mm | 0.9 ±0.2 |
| Valve seat width: Exhaust | mm | 1.15 ±0.2 |
| Ø Valve seat | ||
| Valve seat surface: Outside dia. inlet | mm | 28.4 |
| Valve seat surface: Outside dia. exhaust | mm | 27.1 |