MMX Crank Pulley Reinforcement Kit BMW M135i F20 F21
The problems with the three-piece crankshaft pulleys on N55 engines are well known, but in particular you need to make sure the original crankshaft bolt cannot work loose, which is one of the causes of crank pulley slippage.
The crankshaft bolt can work loose due to engine vibration, which means that at the slightest loss of clamping torque, your valve timing will no longer be correct. With potentially disastrous consequences, as you can imagine.
Installing this capture plate is simpler than the full pulley kit, but provides a sensible "first upgrade".
Included:
- Anodised aluminium locking plate
- New hardware
Team Lupos tip:
"For track cars and high-power cars, you should plan to upgrade this locking plate AND install the one-piece pulley kit"
Suggestions
MMX Crank Pulley Reinforcement Kit BMW M135i F20 F21
Super qualité pour le renfort de poulie N55, c’est 5 étoile.
Dommage la visserie fournit pour la pose ne correspond pas à celle attendue par le constructeur.
Vis d’origine en Acier 10,9 et vis fournis en Inox A2… la classe d’arrachements des nouvelles vis et presque divisée par deux, dommage quand on cherche a gagner en fiabilité.
Ces vis existent dans les dimensions et indice d’arrachement voulues chez certains fournisseurs.
