11 12 Cylinder Head - intake and exhaust valves
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2021 MINI Cooper, 2020 MINI Cooper, 2019 MINI Cooper, 2018 MINI Cooper, and 2017 MINI Cooper. However, it is still accessible from the selected car via links, so may be relevant.
B36 ENGINE (COOPER 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 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 |