Valve Seat
Valve Seat| Valve Seat Angle | degs. | 45 |
| Correction angle - outside | degs. | 15 |
| Correction angle - inside | degs. | 60 |
| Seat width (dimension "B") | -- | -- |
| Intake | mm | 1.65 (+/- 0.25) |
| Exhaust | mm | 2.00 (+/- 0.25) |
| Valve seat dia. | -- | -- |
| Intake O.D. | mm | 41.5 |
| Exhaust O.D. | mm | 35.6 |