The valve springs should be replaced from a camshaft opening angle of 330 ° or from a cam stroke of 8mm to ensure sufficient reserves for the increased valve acceleration and the block limit. The spring kit offers safe closing and following of the cam tracks up to over 8,000 rpm. A must for every tuning engine.
Suitable for all BMW 2-Vetiler cylinder heads with 8mm valve shafts.
- double high-performance valve springs
- Top spring plate made of anodized aircraft aluminium
- Bottom spring plate made of nitrated chromoly steel
- shot-blasted and warm set for high breaking strength
- due to the damping property, no valve flutter
- suitable up to a valve stroke of 13mm
- Speed resistance up to over 8,000 rpm
- low weight and long service life
- For all BMW 2 valves 8mm valve shafts
- mandatory from 8.5mm cam lift or 330° opening angle
| Federauslegung SE Feder-Kit | | | | | | |
| | | | | | | |
| | Länge entspannt | Federlänge Block | Einbaulänge | möglicher Hub | Federkraft | Anfangskraft | Kraft bei 12mm Hub |
| Feder außen | 50mm | 22mm | 36,5mm (-13,5mm) | 14,5mm | 25,6 Nm/mm | 345,6 Nm | 652,8 Nm |
| Feder innnen | 47mm | 18mm | 34,2mm (-12,8mm) | 16,2mm | 14,8 Nm/mm | 189,4 Nm | 367,0 Nm |
| | | | beide Federn | 40,4 Nm/mm | 535 Nm | 1019,8 Nm |
| | | | | | | |
| Einbaulänge ist gemessen bei 41,00mm Ventilüberstand | | | | |
| Die Federteller verringern das Einbaumaß um außen 4,5mm und innen um 6,8mm | | | |
