Reply to thread

Click here to become an Official Member of BMW Club Malaysia Download Form

Message: <blockquote data-quote="leforte" data-source="post: 299135" data-attributes="member: 1943">ess530iyour car being supercharged/modded has nothing to do with the damages caused. your supercharger is just another accessory being driven by the main beltdrive and thats it. there are countless other similarly modded 530s around and non have reported any similar failures. since you mentioned to me your pulley is of a said particular brand, i sudgest you return it for a full refund and bill your damages to them as the manufacturer has a 100% warranty that it would not cause any damages from using it as clearly stated on their website. IMO your case is a very clear indication or rather a ripple effect of  vibration induced stress fatigue caused by the undampened pulley to the attached components. the crank pulley is the one and only component in your drivetrain that generates pulsating vibrations due to the combustion forces of each cylinder per engine cycle. the crank pulley/harmonic balancer is there to absorb/counteract/reduce this vibration pulses from being being transfered to other engine components and accessories by converting any excess vibrations to heat.  FYI since you are reinstalling the original bmw crank pulley, the unit is a major part of the factory balanced rotating assembly, do make sure your mechanic have it properly aligned with the markings indicated on the crankshaft/engine during installation or its just going to cause you another issue later on. </blockquote>

Verification