Crank hub issue; UPDATES* ?

[BMW M4 PWR]

Well, it's brought to my attention the fully built pure turbos running Maximum PSI shop car just spun it Gintani one piece hub w/ super strong bolt torqued higher. This occurred at the MPACT event we just had here on the east coast. I have little doubt others with similar "solutions" will face the same story. Basically are we back to square one with this now?

Obviously these concerns are primarily relating to heavily modded cars (650hp+) and DCT's as their "kickdown" feature spins it easier than occurs with 6MT's...

[9SECDD]

Originally Posted by BMW M4 PWR

Well, it's brought to my attention the fully built pure turbos running Maximum PSI shop car just spun it Gintani one piece hub w/ super strong bolt torqued higher. This occurred at the MPACT event we just had here on the east coast. I have little doubt others with similar "solutions" will face the same story. Basically are we back to square one with this now?

Obviously these concerns are primarily relating to heavily modded cars (650hp+) and DCT's as their "kickdown" feature spins it easier than occurs with 6MT's...

Damn.

[A Frankfurt]

Originally Posted by BMW M4 PWR

Well, it's brought to my attention the fully built pure turbos running Maximum PSI shop car just spun it Gintani one piece hub w/ super strong bolt torqued higher. This occurred at the MPACT event we just had here on the east coast. I have little doubt others with similar "solutions" will face the same story. Basically are we back to square one with this now?

Obviously these concerns are primarily relating to heavily modded cars (650hp+) and DCT's as their "kickdown" feature spins it easier than occurs with 6MT's...

Thank you for this information !

[BMW M4 PWR]

Originally Posted by A Frankfurt

Thank you for this information !

You're very welcome brotha. I want to start a dialogue on what *soutions* out there are currently being tested regarding this issue. This isn't another "failed crank hub" thread, but rather which modded ones have failed and which haven't been tested yet and which are in the pipeline of development... so our cars & community can address this weak link and allow the sky to be our limit instead... 👍

[apexit]

Originally Posted by BMW M4 PWR

You're very welcome brotha. I want to start a dialogue on what *soutions* out there are currently being tested regarding this issue. This isn't another "failed crank hub" thread, but rather which modded ones have failed and which haven't been tested yet and which are in the pipeline of development... so our cars & community can address this weak link and allow the sky to be our limit instead... 👍

When they tear it they hopefullly they will say if the one peice solution failed, the bolt, or both. Either way this issue is stopping me from going to far on this platform. I don't plan on having to buy a motor out of pocket.

[Who's on first]

So, this is my first DCT. I'm very interested in a tune. At what HP should I stay well under.. To mitigate this as much as possible?

[Reach]

Originally Posted by Who's on first

So, this is my first DCT. I'm very interested in a tune. At what HP should I stay well under.. To mitigate this as much as possible?

It spins even on stock cars with stock power. Very rarely, but it does happen. If stock, dealers have been covering the issue.

Big turbo cars on the forum, as small of a data set as that is, seem to be experiencing this more frequently.

[BMW M4 PWR]

Originally Posted by Who's on first

So, this is my first DCT. I'm very interested in a tune. At what HP should I stay well under.. To mitigate this as much as possible?

As "Reach" mentioned it's mainly the big turbo upgrade cars that are experiencing this. Anything upto and around ~500RWHP or stock turbos you shouldn't worry too much although it's still possible on your DCT*

[Who's on first]

Originally Posted by BMW M4 PWR

As "Reach" mentioned it's mainly the big turbo upgrade cars that are experiencing this. Anything upto and around ~500RWHP or stock turbos you shouldn't worry too much although it's still possible on your DCT*

Alrightly then.

We will chat when we meet on the 31st.

Torn between the VF & Bootmod.

[M3SSY]

Is there any correlation to build date and spinning? Some people are speculating they updated something early 2015 I think it was some sort of torque plate for the block

[BMW M4 PWR]

Originally Posted by Who's on first

Alrightly then.

We will chat when we meet on the 31st.

Torn between the VF & Bootmod.

Looking forward to it, I can help you with virtually any question you may have on this subject.. 👍

Originally Posted by M3SSY

Is there any correlation to build date and spinning? Some people are speculating they updated something early 2015 I think it was some sort of torque plate for the block

No, at this point there's not. There was talk that the new bed plate design BMW incorporated on build date's after 12/15 would potentially remedy the issue, but there's NO confirmation of that.

...I personally believe we'll nail a doable aftermarket solution for this issue but we're not there yet* I own a 6MT so I'm not worry about it at all without misshifting... but I DO plan on turbo upgrades with bootmod3 tuning/JB4 stack, fueling upgrades/etc down the road and I NEED this issue address before I take any step further than intake/exhaust/JB4 personally...

[mcvaughan]

Sigh. Makes me consider using map 0 on my JB4 until this gets sorted.

[BMW M4 PWR]

Originally Posted by mcvaughan

Sigh. Makes me consider using map 0 on my JB4 until this gets sorted.

I think that's excessive brotha, failure rates on stock turbos are still very very low ( <1% ) ...run your map 1 or 2, you'll be fine at that level*

[mcvaughan]

Originally Posted by BMW M4 PWR

I think that's excessive brotha, failure rates on stock turbos are still very very low ( <1% ) ...run your map 1 or 2, you'll be fine at that level*

Thx

[9SECDD]

This is one of the reasons I am keeping my car sub 650 whp. Dyno'd at 625 and I think I'll stay there. Props to Kevin at Precision Tuning for his advice on that.

Have driven it hard (roll racing and drag racing) and have not spun it yet, but recognize it's a real possibility. I stick to manually shifting with paddles and avoid hitting kickdown.

Will let you all know if and when I spin mine.

[s2k750]

What are the odds of stock tuned cars spinning vs stock cars spinning?

Are they 1 in 10, 100, 1000? I have no idea how many of these cars are actually out there.

[BMW M4 PWR]

Originally Posted by NJ-M4

This is one of the reasons I am keeping my car sub 650 whp. Dyno'd at 625 and I think I'll stay there. Props to Kevin at Precision Tuning for his advice on that.

Have driven it hard (roll racing and drag racing) and have not spun it yet, but recognize it's a real possibility. I stick to manually shifting with paddles and avoid hitting kickdown.

Will let you all know if and when I spin mine.

Very smart, if everyone followed that advice and your strategy there'd be virtually no failures. Solutions are being worked on as we speak... these motors have ENORMOUS potential in making reliable power and torque, but this annoying ass weak link HAS to be addressed to go significantly over 650-700rwhp *reliably*

Originally Posted by s2k750

What are the odds of stock tuned cars spinning vs stock cars spinning?

Are they 1 in 10, 100, 1000? I have no idea how many of these cars are actually out there.

Very few.

[FC4]

Can always email these people so it's on their radar...

ludwig.willisch@bmwgroup.com - President and CEO

rebecca.kiehne@bmwna.com - Product and Technical Communications Spokesperson, BMW of North America

alexander.schmuck@bmwna.com - Product & Technology Communications Manager at BMW of North America

hector.arellano-belloc@bmwna.com - BMW Product and Technology Spokesperson at BMW of North America

gabriel.dunn@bmwna.com - Media Communications Manager. Direct phone:

ralph.huber@bmwna.com - Chief of Technology Communication

kai.lichte@bmwgroup.com - Product Communications Manager

dirk.arnold@bmwgroup.com - Vice President Product, Technology and Sports Communications, Press and PR Events

bill.mcandrews@bmw.de - Vice President Communications Strategy, Corporate Communications, BMW Group

jan-christiaan.koenders@bmw.de - Executive Vice President, Sales and Operations

[DieGrüneHölle]

Originally Posted by s2k750

What are the odds of stock tuned cars spinning vs stock cars spinning?

Are they 1 in 10, 100, 1000? I have no idea how many of these cars are actually out there.

No one has the answer to that.

[MaX PL]

Wow that sucks for maximumpsi. I was following them on Instagram right up til them building the engine last minute for the event.

If anyone comes up with a solution for this it'll be BMW and BMW only.

[BMW M4 PWR]

Originally Posted by MaX PL

If anyone comes up with a solution for this it'll be BMW and BMW only.

Thats not true, there's been so much shit like this (and waaay worst issues) across so many different platforms and we almost always find fixes for them in the aftermarket world. In the scope of difficulty this isn't nearly the worst either...

[chewbakam4]

Originally Posted by BMW M4 PWR

Well, it's brought to my attention the fully built pure turbos running Maximum PSI shop car just spun it Gintani one piece hub w/ super strong bolt torqued higher. This occurred at the MPACT event we just had here on the east coast. I have little doubt others with similar "solutions" will face the same story. Basically are we back to square one with this now?

Obviously these concerns are primarily relating to heavily modded cars (650hp+) and DCT's as their "kickdown" feature spins it easier than occurs with 6MT's...

Well couldn't have been kickdown at the event as its WOT in straight line and they just put it back together.