Serpentine belt routing

07tundra · 08-22-2014, 09:47 PM

Does anyone have a pic they could share for the routing of the serpentine belt?

Ingeniator · 08-22-2014, 10:10 PM

Quote:

Originally Posted by 07tundra

Does anyone have a pic they could share for the routing of the serpentine belt?

Bad picture missing idlers

07tundra · 08-22-2014, 10:37 PM

Quote:

Originally Posted by Ingeniator

Thers's another pic over on n54tech

Ingeniator · 08-22-2014, 10:50 PM

Yeah, I think my 135 was routed as per the second option and Real OEM.

http://www.n54tech.com/forums/showthread.php?t=11957

Edit: I changed it. To the second option. This is now something I should've taken a before picture of. I assumed it would be easy. Now I miss the belt diagram on the rad support that every other car manufacturer gives you. I like that routing better as it gives you more belt contact with the crank.

07tundra · 08-22-2014, 10:52 PM

Quote:

Originally Posted by Ingeniator

Yeah, I think my 135 was routed as per the first pic and engine picture.

http://www.n54tech.com/forums/showthread.php?t=11957

If you read down a post made by Jaza he says the first pic was an early pic and he thinks they changed it to the second pic because of the subframe issue. But is that correct?

Ingeniator · 08-22-2014, 11:04 PM

Quote:

Originally Posted by 07tundra

If you read down a post made by Jaza he says the first pic was an early pic and he thinks they changed it to the second pic because of the subframe issue. But is that correct?

Read it again lol.

BMWM.D. · 08-23-2014, 02:19 PM

Quote:

Originally Posted by Ingeniator

Bad picture missing idlers

That looks like an N51/N52 belt diagram.

I also believe that that upper diagram picture (in the link) is for the X6 only. All E9x cars should be the same as far as I know.

stashtrey · 08-23-2014, 07:58 PM

I just replaced the alternator in my 08 335 e90. My car did not have the idler pulley attached to the alternator. A lot of the info out there is conflicting.

Anyone have a 335 n54 with the idler pulley on the alternator???

Not a fun job but the serp belt change is EAST. Make sure you have a T60 torx.

ches170 · 08-06-2017, 12:02 PM

Sorry to revive an old post but does anyone know what the top left pulley is om the diagram? And the lower right?

07tundra · 08-06-2017, 01:59 PM

Quote:

Originally Posted by ches170

Sorry to revive an old post but does anyone know what the top left pulley is om the diagram? And the lower right?

A/C and Power steering i think

ches170 · 08-06-2017, 02:26 PM

Quote:

Originally Posted by 07tundra

A/C and Power steering i think

Thank you sir

08-22-2014, 09:47 PM	#1
07tundra Lieutenant Colonel 122 Rep 1,524 Posts Drives: 8.1L Chevy 2500hd Join Date: Jan 2012 Location: New Mexico iTrader: (9)	Serpentine belt routing Does anyone have a pic they could share for the routing of the serpentine belt? __________________ 2008 335i FFTEC ST 6266,), Boostbox, VRSF 3.5 exhaust, mtech front and rear, KWVll, APEX 18x9.0, 18x12= 305/35/18 NTO1s, BMS OCC, Rb PVC, M3 tri-color stitched S-wheel,MT SWAPPED, M3 LSD diff 2008 135i mods coming soon! Last edited by 07tundra; 08-22-2014 at 10:04 PM..
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08-22-2014, 10:50 PM	#4
Ingeniator Major 34 Rep 1,093 Posts Drives: 07 335XI(90) 09 135I(82) Join Date: Nov 2013 Location: Fort Mac, Alberta iTrader: (1)	Yeah, I think my 135 was routed as per the second option and Real OEM. http://www.n54tech.com/forums/showthread.php?t=11957 Edit: I changed it. To the second option. This is now something I should've taken a before picture of. I assumed it would be easy. Now I miss the belt diagram on the rad support that every other car manufacturer gives you. I like that routing better as it gives you more belt contact with the crank. __________________ 07 335XI (A008006) 6AT ~94K miles JB4 G5 ISO VSRF DP's 09 135I M (VK80379) 6MT. Race Project car. 1) Install Cobb/piggyback? and Motiv 600 Kit[HTA3076R w/ tial .82] 2) JRZ or Moton suspension. 3) Build high flow intake manifold with multi-port fuel and relocate OFH 4) Build full cage 5) Complete staged twin setup with HTA4205R [w/Tial 1.16] 6) Complete dry sump system Last edited by Ingeniator; 08-22-2014 at 11:00 PM..
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08-23-2014, 07:58 PM	#8
stashtrey Lieutenant Colonel 295 Rep 1,834 Posts Drives: 08 E90 335xi TiAg Join Date: Dec 2012 Location: Sacramento, CA iTrader: (8) Garage List 2008 E90 335xi Sedan [0.00]	I just replaced the alternator in my 08 335 e90. My car did not have the idler pulley attached to the alternator. A lot of the info out there is conflicting. Anyone have a 335 n54 with the idler pulley on the alternator??? Not a fun job but the serp belt change is EAST. Make sure you have a T60 torx.
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08-06-2017, 12:02 PM	#9
ches170 New Member 4 Rep 21 Posts Drives: 2009 BMW 328i coupe Join Date: Jul 2017 Location: Va beach iTrader: (0)	Sorry to revive an old post but does anyone know what the top left pulley is om the diagram? And the lower right?
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