Crank Hub Info

Chris@VargasTurboTech · 08-23-2017, 11:03 AM

As the crank hub problems get more and more common, people need parts, since Tony is so familiar with these issues, he put together a parts list and also a legend of what motors share what parts. It's a bit of a hodge-podge, of what is shared between the platforms.

One thing to note is that after 2010. All the hub go to the 8 bolt hub, this continues all the way up to the new S55's. They do not use the same bolt, and some sprockets match while others do not.

Overall we would say it looks like BMW was trying to save money by sharing parts instead of coming up with a solution to fix the problem.

VTT can offer hope for all platforms. We are developing crank hub fix kits, and we will add these to our "Game Changer" line up to go with our Crank Bolt captures. For the average person the Crank bolt Capture is most likely enough. For other that want to push the boundaries, the full hub replacement, with the Crank Bolt Capture, may be the solution for you. We don't want to say it's pure genius, but it is a pretty nifty solution and I'll be excited to share more details soon. We'll keep you updated on that.

WedgePerformance · 08-24-2017, 01:13 AM

This is good stuff. I want to get this on my N55 as soon as it's available.

335e92tx · 08-24-2017, 06:09 AM

yep, after reading some more about the s55 issues.. and seeing all the aftermarket solutions in the works, sounds like this is just waiting for some that are making big #...

tylerboland01 · 08-24-2017, 07:20 AM

So does issue happen randomly with the N54/N55, or is it just a problem for the high HP cars (500HP/600HP+)?

I'd really like to avoid doing a rebuild on this engine.

335e92tx · 08-24-2017, 07:41 AM

chances of failure go up with HP increases. Its effectively a 'friction' connection, and as increased power is available to the vehicle the net is additional loads are placed on components.. and thats the one that has the least margin..

tylerboland01 · 08-24-2017, 08:59 AM

Quote:

Originally Posted by 335e92tx

chances of failure go up with HP increases. Its effectively a 'friction' connection, and as increased power is available to the vehicle the net is additional loads are placed on components.. and thats the one that has the least margin..

If I recall it correctly my e36 was of similar design, although i believe the hub had a keyway. Not that it would have made a difference if the hub did come loose, the key would have certainly sheared.

bbnks2 · 08-24-2017, 09:43 AM

Quote:

Originally Posted by tylerboland01

If I recall it correctly my e36 was of similar design, although i believe the hub had a keyway. Not that it would have made a difference if the hub did come loose, the key would have certainly sheared.

And that right there is the "key" (no pun intended) criticism of the aftermarket "fixes."

If the hub slips timing, the key is going to shear and cause more damage than without the hub being key'd. The resolution to these failures is still unknown from what I've gathered.

feuer · 08-24-2017, 10:16 PM

http://www.imgrum.org/tag/crankhub

Chris@VargasTurboTech · 08-24-2017, 11:05 PM

Yep -plenty of attempts on the market currently but as far as I know none of them are complete. Time will tell...

Chris

Chris@VargasTurboTech · 08-31-2017, 10:04 AM

Original files updated!

After getting with our BMW rep, he said a lot of the parts have superceded so this is easier than ever.

Basically N55/S55 are identical, all parts numbers can be interchanged.

N54 has its own hub, and bolt, everything else is the same.

So all sprockets the same, all grip disks the same, sprocket clip is the same across all three platforms. Makes this pretty easy.

08-23-2017, 11:03 AM	#1
Chris@VargasTurboTech Lieutenant Colonel 1933 Rep 1,532 Posts Drives: All Things TurboCharged Join Date: May 2016 Location: Bay Area iTrader: (0)	Crank Hub Info As the crank hub problems get more and more common, people need parts, since Tony is so familiar with these issues, he put together a parts list and also a legend of what motors share what parts. It's a bit of a hodge-podge, of what is shared between the platforms. One thing to note is that after 2010. All the hub go to the 8 bolt hub, this continues all the way up to the new S55's. They do not use the same bolt, and some sprockets match while others do not. Overall we would say it looks like BMW was trying to save money by sharing parts instead of coming up with a solution to fix the problem. VTT can offer hope for all platforms. We are developing crank hub fix kits, and we will add these to our "Game Changer" line up to go with our Crank Bolt captures. For the average person the Crank bolt Capture is most likely enough. For other that want to push the boundaries, the full hub replacement, with the Crank Bolt Capture, may be the solution for you. We don't want to say it's pure genius, but it is a pretty nifty solution and I'll be excited to share more details soon. We'll keep you updated on that. Attached Images Last edited by Chris@VargasTurboTech; 08-31-2017 at 10:03 AM..
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08-24-2017, 01:13 AM	#2
WedgePerformance BimmerPost Supporting Vendor 1334 Rep 1,701 Posts Drives: Slot Machines.. Keep Taking $ Join Date: Oct 2013 Location: Portland, OR iTrader: (0) Garage List 2007 BMW 335i Sport [9.67]	This is good stuff. I want to get this on my N55 as soon as it's available.
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08-24-2017, 06:09 AM	#3
335e92tx ahat 1036 Rep 2,592 Posts Drives: Was '07-335e92 - Now '13-335IS Join Date: Mar 2008 Location: Texas iTrader: (6)	yep, after reading some more about the s55 issues.. and seeing all the aftermarket solutions in the works, sounds like this is just waiting for some that are making big #... __________________ '13 335IS N54 (1 of 373 LeMans Blue out of 3597 total production e92)- Grey interior (1 of 24 in LMB with any trans- 1 of 14 with DCT)-MODS -MFactory LSD/MHD-BQ custom Tune/ATM-IC/AFE Momentum GT Intake/Konis/Mfront&HeimJoint Rear rods&arms/Brembos. https://photos.app.goo.gl/Lo6aHZRo7XqtPkhL8
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08-24-2017, 07:20 AM	#4
tylerboland01 Private First Class 53 Rep 151 Posts Drives: 08 335i Join Date: Jun 2017 Location: Magnolia, TX iTrader: (0)	So does issue happen randomly with the N54/N55, or is it just a problem for the high HP cars (500HP/600HP+)? I'd really like to avoid doing a rebuild on this engine.
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08-24-2017, 07:41 AM	#5
335e92tx ahat 1036 Rep 2,592 Posts Drives: Was '07-335e92 - Now '13-335IS Join Date: Mar 2008 Location: Texas iTrader: (6)	chances of failure go up with HP increases. Its effectively a 'friction' connection, and as increased power is available to the vehicle the net is additional loads are placed on components.. and thats the one that has the least margin.. __________________ '13 335IS N54 (1 of 373 LeMans Blue out of 3597 total production e92)- Grey interior (1 of 24 in LMB with any trans- 1 of 14 with DCT)-MODS -MFactory LSD/MHD-BQ custom Tune/ATM-IC/AFE Momentum GT Intake/Konis/Mfront&HeimJoint Rear rods&arms/Brembos. https://photos.app.goo.gl/Lo6aHZRo7XqtPkhL8
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08-24-2017, 10:16 PM	#8
feuer Major General 4276 Rep 9,206 Posts Drives: wife crazy! Join Date: Apr 2015 Location: Chicago, IL iTrader: (5)	http://www.imgrum.org/tag/crankhub
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08-24-2017, 11:05 PM	#9
Chris@VargasTurboTech Lieutenant Colonel 1933 Rep 1,532 Posts Drives: All Things TurboCharged Join Date: May 2016 Location: Bay Area iTrader: (0)	Yep -plenty of attempts on the market currently but as far as I know none of them are complete. Time will tell... Chris
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08-31-2017, 10:04 AM	#10
Chris@VargasTurboTech Lieutenant Colonel 1933 Rep 1,532 Posts Drives: All Things TurboCharged Join Date: May 2016 Location: Bay Area iTrader: (0)	Original files updated! After getting with our BMW rep, he said a lot of the parts have superceded so this is easier than ever. Basically N55/S55 are identical, all parts numbers can be interchanged. N54 has its own hub, and bolt, everything else is the same. So all sprockets the same, all grip disks the same, sprocket clip is the same across all three platforms. Makes this pretty easy.
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