Help !Supercharger belt Misaligned ? Or maybe belt belt tensioner ?

wahooooman · 10-07-2020, 09:09 AM

Hey All ! finally back into a e92 M3 and this one has a ESS 650 kit on it

The issue I just rant into is it seems to be shredding the belt (pictures below).

It seemed when it was running to be on the idler pully on the edge of it and eventually just slipped to the edge of the Alternator. Just curious if maybe somthing isnt lined up correctly or not enough tension on the belt itself.

Any help greatly appreciated! Thanks !

amrazM · 10-07-2020, 09:43 AM

could be a number of things, the idler in the circuit before the alternator could have some play in the bearing causing it to tilt and ride off the alternator pulley.

wahooooman · 10-07-2020, 01:36 PM

Quote:

Originally Posted by amrazM

could be a number of things, the idler in the circuit before the alternator could have some play in the bearing causing it to tilt and ride off the alternator pulley.

Thanks, ill have to pull the belt off and see if it has play in it. The kit does have 8k on it now, was thinking of just doing the belt and ordering a new Tensioner but might as well get the idler too

darkbmw · 10-07-2020, 05:10 PM

Well if it is a true 650 kit, it should have a 7 rib belt kit, bigger crank, alternator and same size water pump. If they just down size the supercharger pulley, it could be machined offset wrong.

10-07-2020, 09:09 AM	#1
wahooooman Lieutenant 77 Rep 510 Posts Drives: 2010 Atlantis M3 Join Date: May 2011 Location: NORTH SHORE Ma iTrader: (4) Garage List 2010 e92 M3 [0.00] 2nd 2007 e90 335 [0.00]	Help !Supercharger belt Misaligned ? Or maybe belt belt tensioner ? Hey All ! finally back into a e92 M3 and this one has a ESS 650 kit on it The issue I just rant into is it seems to be shredding the belt (pictures below). It seemed when it was running to be on the idler pully on the edge of it and eventually just slipped to the edge of the Alternator. Just curious if maybe somthing isnt lined up correctly or not enough tension on the belt itself. Any help greatly appreciated! Thanks ! Attached Images __________________ 07 e90 335xi- Sold, 09 X5- Sold, 12 e92 335 xdrive - Sold 11 e92 M3- Sold, 15 M235-Sold,07 e90 335xi (current daily), 10 Atlantis e92 M3 (current) Way to many mods to list
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10-07-2020, 09:43 AM	#2
amrazM mTekMods 2478 Rep 3,150 Posts Drives: like a granny. Join Date: Jan 2010 Location: Manhatan iTrader: (1)	could be a number of things, the idler in the circuit before the alternator could have some play in the bearing causing it to tilt and ride off the alternator pulley. __________________ E90M3 - Satin Black F97 X3M - Brooklyn Grey E39 M5 - Silverstone
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10-07-2020, 05:10 PM	#4
darkbmw Second Lieutenant 105 Rep 278 Posts Drives: slow m3 Join Date: Jun 2012 Location: orlando fl iTrader: (0)	Well if it is a true 650 kit, it should have a 7 rib belt kit, bigger crank, alternator and same size water pump. If they just down size the supercharger pulley, it could be machined offset wrong.
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