11 12 Cylinder Head with Valve Seat Cover N20/N26
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2016 BMW 328i xDrive, 2016 BMW 328d xDrive, 2015 BMW 328i xDrive, 2015 BMW 328d xDrive, and 2014 BMW 328i xDrive. However, it is still accessible from the selected car via links, so may be relevant.
CYLINDER HEAD WITH VALVE SEAT COVER SPECIFICATIONS
| Valve seat angle | ° | 45 |
| Correction angle: outer | ° | 35 |
| Correction angle: Inner, exhaust valve | ° | 60 |
| Correction angle: Inner, intake valve | ° | 65 |
| Valve seat width: Intake | mm | 1.25 +0.2 |
| Valve seat width: Exhaust | mm | 1.65+0.2 |
| Ø theoretical valve seat | ||
| Valve seat surface: Outer diameter, intake | mm | 30.4+0.1 |
| Valve seat surface: Outer diameter, exhaust | mm | 26.6+0.1 |