11 12 Cylinder Head with Valve Seat Cover N20/N26 B20
CYLINDER HEAD WITH VALVE SEAT COVER SPECIFICATION
| 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 | 266 +0.1 |