Vtt crank hub slipped, turbos failed

Chris@VargasTurboTech · 12-21-2019, 12:37 PM

Quote:

Originally Posted by MR RIZK

If you have the VTT v1 and it slips a little, in theory this has enlarged the crank snout somewhat or at least damaged the mating area.

Wouldn't the effectiveness of a v2 be reduced by virtue? Would be better going with a pinned solution instead second time round imo.

Not saying the v2 doesn't work, just saying I wouldn't put a v2 after fitment of a v1.

The V2 is much more aggressive in the bite. It can absolutely be installed post V1 (slip or no slip).

Chris

Smee · 12-21-2019, 12:51 PM

Cam I ask if you are dct or manual

bracer · 12-21-2019, 02:55 PM

DCT

aBMWfan · 12-21-2019, 03:21 PM

Quote:

Originally Posted by blackey

DCT

Blackey you should inquire on this built motor if you have the means will save you lots of downtime and money

Probably get good money back from your stock motor if nothing serious

bracer · 12-21-2019, 05:19 PM

Where did you see the built motor? That's a good deal.

So I just got back from EAS. The amount of metal (including small slivers) in the filter did not come from the crank hub. EAS will pull the pan on Monday, but I I'm not hopeful the results will be good.

With regards to the V1 crankhub. The snout of the crank is completely smooth. The V1 crank hub did not bite into the snout whatsoever, I'm 100% sure on that one. You can see the image of where the spines sat, but that's about it.

aBMWfan · 12-21-2019, 05:26 PM

Quote:

Originally Posted by blackey

Where did you see the built motor? That's a good deal.

So I just got back from EAS. The amount of metal (including small slivers) in the filter did not come from the crank hub. EAS will pull the pan on Monday, but I I'm not hopeful the results will be good.

With regards to the V1 crankhub. The snout of the crank is completely smooth. The V1 crank hub did not bite into the snout whatsoever, I'm 100% sure on that one. You can see the image of where the spines sat, but that's about it.

Just send me a message if you need help contacting him he’s on Facebook

Beemerm3 · 12-21-2019, 07:18 PM

Back to square one now. Thought my cbc is strong enough. I guess not.

///BMW Junkie · 12-21-2019, 07:26 PM

Quote:

Originally Posted by M3classic

Back to square one now. Thought my cbc is strong enough. I guess not.

It sounds to me this has nothing to do with CBC, more so that VTT hub failed which has nothing to do with the bolt backing out. If I'm honest, I feel safer with my stock hub and CBC..

theweebabySeamus · 12-21-2019, 07:32 PM

Quote:

Originally Posted by ///FastEuro

It sounds to me this has nothing to do with CBC, more so that VTT hub failed which has nothing to do with the bolt backing out. If I'm honest, I feel safer with my stock hub and CBC..

There are images of the crank after pulling a V2 and it bites in pretty good.

///BMW Junkie · 12-21-2019, 07:51 PM

Quote:

Originally Posted by theweebabySeamus

Quote:

Originally Posted by ///FastEuro

It sounds to me this has nothing to do with CBC, more so that VTT hub failed which has nothing to do with the bolt backing out. If I'm honest, I feel safer with my stock hub and CBC..

There are images of the crank after pulling a V2 and it bites in pretty good.

Gentleman had a V1. Sounds like they have more faith in V2 with the partial warranty though.

X.X.I.V · 12-21-2019, 10:54 PM

Quote:

Originally Posted by blackey

You can see the image of where the spines sat, but that's about it.

I don't see this image?

ASRman · 12-22-2019, 04:56 AM

Quote:

Originally Posted by ///FastEuro

It sounds to me this has nothing to do with CBC, more so that VTT hub failed which has nothing to do with the bolt backing out. If I'm honest, I feel safer with my stock hub and CBC..

Agreed. Seen a few VTT fail now but none where just the CBC was used with stock hub. Definitely feel safer with CBC and stock hub.

allinon72 · 12-22-2019, 10:56 AM

Is there any definitive proof or some type of demonstration on the VTT product biting into something as hard as the crank?

behindthen0thing · 12-22-2019, 11:10 AM

Quote:

Originally Posted by allinon72

Is there any definitive proof or some type of demonstration on the VTT product biting into something as hard as the crank?

There was a pretty good photo about a year ago of all the grooves the new VTT hub made in the crank.

Some of the V1's weren't biting. I think they altered the spline design as well as made the metal harder. Far as I know the V2 surely bites in.

jacobe92 · 12-22-2019, 11:48 AM

Damn! Sorry to hear about your plight OP. You're definitely within your rights to voice your opinions about the mods that failed you. Among other things, this is what this forum for. I actually commend this said vendor for still keeping the line of communication with you and owning up their responsibilities. Now the big question, will they make you completely whole from this incident and that includes the labor, rental and all the expenses you have incurred. I'm not a lawyer, but this is what a lawyer at minimum would ask for. Then again, a successful negotiation means when both parties had something they lost and could live with. Side note, I'm glued to this thread because I also plan to build my motor to withstand the conditions of track. GL man and I sincerely mean that.

Kev608 · 12-22-2019, 11:56 AM

Very sorry to hear this! Did it fail at kick-down? That seems to be the common thread with DCT spun hubs.

Ed_rx7 · 12-22-2019, 04:06 PM

Quote:

Originally Posted by blackey

Where did you see the built motor? That's a good deal.

So I just got back from EAS. The amount of metal (including small slivers) in the filter did not come from the crank hub. EAS will pull the pan on Monday, but I I'm not hopeful the results will be good.

With regards to the V1 crankhub. The snout of the crank is completely smooth. The V1 crank hub did not bite into the snout whatsoever, I'm 100% sure on that one. You can see the image of where the spines sat, but that's about it.

So where are those metal filings from?

nbennettksu · 12-22-2019, 07:39 PM

Quote:

Originally Posted by blackey

I hear you. So far VTT has been helpful in diagnosing the issue although I wish they had given some indication V1 had some possible issues. I can afford it, but the downtime sucks.

So Chris has indicated that if the hub has spun and the friction disc is damaged (mine was) that there will be metal in the filter. Anyone else who has spun a disc confirm you had similar indications?

My big issue right now is what to do next. Do I pull the motor for a full rebuild even though it is running fine, (except for the metal in the filter of course), or do I take a chance and clean everything up and just have EAS put it back together.

Mine spun before in did insane fix, I did not have metal shavings.

fanatic1 · 12-22-2019, 07:46 PM

Sorry to hear OP, hope this gets resolved to your satisfaction and know the community is behind you - pretty much every BMW at the track this weekend was aware of your situation and looks forward to seeing this resolved.

nbennettksu · 12-22-2019, 07:49 PM

Quote:

Originally Posted by ASRman

Does the VTT 'no slip guarantee' cover any engine damage caused by their faulty product? Obviously if your hub slips running a VTT that last thing I would want would be to replace the hub with another VTT which is prone to slip.

Again, don't see how offering the OP a V2 hub as a 'gesture of goodwill' is any consolation here. Surely that's a given, and not goodwill seeing they don't advertise V1 as a hub prone to slip. Maybe they should start building these disclaimers into their marketing campaigns.

If I was OP, I would not stop short of requesting VTT cover ALL damage caused as as result of their product failing.

They'd manufacture some way to blame it on the installer. Easy cop out.

aBMWfan · 12-22-2019, 08:47 PM

Quote:

Originally Posted by nbennettksu

They'd manufacture some way to blame it on the installer. Easy cop out.

Except it’s EAS which is their authorized installer

nbennettksu · 12-22-2019, 09:42 PM

Quote:

Originally Posted by aBMWfan

Quote:

Originally Posted by nbennettksu

They'd manufacture some way to blame it on the installer. Easy cop out.

Except it’s EAS which is their authorized installer

OP said another shopped installed the spline lock.

12-21-2019, 12:51 PM	#24
Smee Colonel 505 Rep 2,152 Posts Drives: BMW M4 F83 Join Date: Aug 2016 Location: Norfolk iTrader: (0)	Cam I ask if you are dct or manual
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12-21-2019, 02:55 PM	#25
bracer Mr Bill 296 Rep 545 Posts Drives: GLC63 Join Date: Sep 2013 Location: Aliso Viejo iTrader: (1)	DCT
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12-21-2019, 05:19 PM	#27
bracer Mr Bill 296 Rep 545 Posts Drives: GLC63 Join Date: Sep 2013 Location: Aliso Viejo iTrader: (1)	Where did you see the built motor? That's a good deal. So I just got back from EAS. The amount of metal (including small slivers) in the filter did not come from the crank hub. EAS will pull the pan on Monday, but I I'm not hopeful the results will be good. With regards to the V1 crankhub. The snout of the crank is completely smooth. The V1 crank hub did not bite into the snout whatsoever, I'm 100% sure on that one. You can see the image of where the spines sat, but that's about it. Attached Images __________________ 2018 GLC63 2016 Miata 2020 X3M (sold) Turbo Miata Racecar (sold) 1995, 2009, 2015 M3 (sold)
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12-21-2019, 07:18 PM	#29
Beemerm3 First Lieutenant 59 Rep 345 Posts Drives: 16' BMW m3 Join Date: Jul 2019 Location: Sacramento iTrader: (0)	Back to square one now. Thought my cbc is strong enough. I guess not.
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12-22-2019, 10:56 AM	#35
allinon72 Brigadier General 4922 Rep 3,805 Posts Drives: 20' M2C, 23' X1 Join Date: May 2017 Location: Indianapolis, IN iTrader: (2)	Is there any definitive proof or some type of demonstration on the VTT product biting into something as hard as the crank?
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12-22-2019, 11:48 AM	#37
jacobe92 Major 619 Rep 1,239 Posts Drives: 2016 Hell Rot F80 M3 Join Date: Aug 2010 Location: California iTrader: (6)	Damn! Sorry to hear about your plight OP. You're definitely within your rights to voice your opinions about the mods that failed you. Among other things, this is what this forum for. I actually commend this said vendor for still keeping the line of communication with you and owning up their responsibilities. Now the big question, will they make you completely whole from this incident and that includes the labor, rental and all the expenses you have incurred. I'm not a lawyer, but this is what a lawyer at minimum would ask for. Then again, a successful negotiation means when both parties had something they lost and could live with. Side note, I'm glued to this thread because I also plan to build my motor to withstand the conditions of track. GL man and I sincerely mean that. __________________ 2016 Hellrot F80 M3\|JRZ RS Pro with Swift Springs 550/750 spring rates l AP Radical 5000R 9668/9449 lSpiegler SS LinesI DS1.11I Eisenmann DP\|MPE Catback\|18" Forgeline GS1R 18x10 et 22 and 18x11 et 44 NT01 275/35/18 and 305/35/18\| Forgeline GTD1 18x10et43 SquarelM Performance Lip/Splitter\|IND aesthetic mods\|Dinan Toe Link\|Fall Line mono ball conversion kit and upper link kit\| Aim Solo 2DL Smarty Cam\|Simpson Hybrid\|Stilo Offshore helmet.
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12-22-2019, 11:56 AM	#38
Kev608 First Lieutenant 181 Rep 310 Posts Drives: M4 Competition Join Date: Oct 2019 Location: Madison, WI iTrader: (0)	Very sorry to hear this! Did it fail at kick-down? That seems to be the common thread with DCT spun hubs.
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12-22-2019, 07:46 PM	#41
fanatic1 Captain 1019 Rep 859 Posts Drives: 2019 M4 CS Join Date: Sep 2010 Location: Encinitas/San Diego iTrader: (1) Garage List 2019 M4CS [0.00]	Sorry to hear OP, hope this gets resolved to your satisfaction and know the community is behind you - pretty much every BMW at the track this weekend was aware of your situation and looks forward to seeing this resolved.
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