Pandora Car Alarm System
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read

Go Back   BMW M3 and BMW M4 Forum > BMW F80 M3 / F82 M4 Technical Topics > Engine / Drivetrain / Exhaust / Bolt-ons / Tuning

Post Reply
 
Thread Tools Search this Thread
      02-15-2016, 09:05 AM   #89
Yessir
Lieutenant
370
Rep
465
Posts

Drives: car
Join Date: Jul 2014
Location: california

iTrader: (-1)

Quote:
Originally Posted by JcLusso View Post
No one is pushing away people modifying their cars. It's just wrong however of a vendor to push a part as "necessary preventative maintenance" warning those who don't that they will have their engine at risk for catastrophic failure.

If TPG didn't push the part like it was needed by all, there would be no discussion. That is what they did as seen by the wording in their forum and facebook posts where they utilize a scare tactics to create sales.

And they still are selling a part for a profit (not to help the community) that is known to fail on their site even after all of this. It's clear that they don't care. If they cared about this community the part would no longer be for sale.
Fair enough and valid points. I am not taking sides here. I just think people are pretty harsh on Sameet who has absolutely nothing to gain by claiming there is a crank hub issue. His car is a beast and he found a weak point in the system. Whether it affects stock vehicles will be seen, which he has just posted evidence of. In my opinion, it's fair enough to say that a stock vehicle crank hub issue is minimal, if one does occur let manufacturer warranty sort out the issue. My car is stock, DCT. Am I afraid if there is a crank hub issue? No, because I'll let bmw handle it. I'm not going to blindly go out and buy parts to "remedy" something that most are still pessimistic about. Even if TPG made these scare tactic claims, the point of this thread is about crank hub slippage not whether TPG's product is effective, which I think we all know he answer to at this point. I'm am not condoning TPGs scare tactics but they put out a product that does not work as intended so the burden is on them. We don't need to sit here and keep pointing fingers and remind them they f'd up. Does everyone just want TPG to admit they made a mistake producing this product? It's pretty clear there is a crank hub issue on modified vehicles so let these vendors start fresh and produce a product that will allow customers to modify their cars without fear of crank hub failure.
I am not affiliated with Sameet,TPG or anyone in this thread. I only view this from a neutral perspective and have seen too much personal attacking, which does not bode well for this community. I honestly see no reason why Sameet is being attacked here except that his car ran some TPG Parts that failed on more than one occasion. If anything, we should be thanking him. Without those failures we would not know about the short comings about TPGs crank hub fix.
/rant
Appreciate 1
      02-15-2016, 09:10 AM   #90
minn19
Lieutenant General
minn19's Avatar
13970
Rep
10,061
Posts

Drives: 24 Z06, 23 CT4VBW, 22 PFinder
Join Date: Jul 2013
Location: Minnesota

iTrader: (0)

Quote:
Originally Posted by sA x sKy View Post
Because he was on map 4 (stock - pass through) when it happened.
Quote:
Originally Posted by Yessir View Post
Fair enough and valid points. I am not taking sides here. I just think people are pretty harsh on Sameet who has absolutely nothing to gain by claiming there is a crank hub issue. His car is a beast and he found a weak point in the system. Whether it affects stock vehicles will be seen, which he has just posted evidence of. In my opinion, it's fair enough to say that a stock vehicle crank hub issue is minimal, if one does occur let manufacturer warranty sort out the issue. My car is stock, DCT. Am I afraid if there is a crank hub issue? No, because I'll let bmw handle it. I'm not going to blindly go out and buy parts to "remedy" something that most are still pessimistic about. Even if TPG made these scare tactic claims, the point of this thread is about crank hub slippage not whether TPG's product is effective, which I think we all know he answer to at this point. I'm am not condoning TPGs scare tactics but they put out a product that does not work as intended so the burden is on them. We don't need to sit here and keep pointing fingers and remind them they f'd up. Does everyone just want TPG to admit they made a mistake producing this product? It's pretty clear there is a crank hub issue on modified vehicles so let these vendors start fresh and produce a product that will allow customers to modify their cars without fear of crank hub failure.
I am not affiliated with Sameet,TPG or anyone in this thread. I only view this from a neutral perspective and have seen too much personal attacking, which does not bode well for this community. I honestly see no reason why Sameet is being attacked here except that his car ran some TPG Parts that failed on more than one occasion. If anything, we should be thanking him. Without those failures we would not know about the short comings about TPGs crank hub fix.
/rant
He posted evidence of another tuned car breaking. Just because he was on the pass through mode when it happened doesn't mean anything. The previous effects of being run on the tune could of led to this failure. What else is on this "stock" car?
Appreciate 0
      02-15-2016, 09:13 AM   #91
sA x sKy
Sameet
sA x sKy's Avatar
Bangladesh
739
Rep
2,541
Posts

Drives: AY/B M4 '15
Join Date: Apr 2010
Location: Long Island, New York

iTrader: (3)

Garage List
2015 BMW M4  [0.00]
Quote:
Originally Posted by Yessir
Quote:
Originally Posted by JcLusso View Post
No one is pushing away people modifying their cars. It's just wrong however of a vendor to push a part as "necessary preventative maintenance" warning those who don't that they will have their engine at risk for catastrophic failure.

If TPG didn't push the part like it was needed by all, there would be no discussion. That is what they did as seen by the wording in their forum and facebook posts where they utilize a scare tactics to create sales.

And they still are selling a part for a profit (not to help the community) that is known to fail on their site even after all of this. It's clear that they don't care. If they cared about this community the part would no longer be for sale.
Fair enough and valid points. I am not taking sides here. I just think people are pretty harsh on Sameet who has absolutely nothing to gain by claiming there is a crank hub issue. His car is a beast and he found a weak point in the system. Whether it affects stock vehicles will be seen, which he has just posted evidence of. In my opinion, it's fair enough to say that a stock vehicle crank hub issue is minimal, if one does occur let manufacturer warranty sort out the issue. My car is stock, DCT. Am I afraid if there is a crank hub issue? No, because I'll let bmw handle it. I'm not going to blindly go out and buy parts to "remedy" something that most are still pessimistic about. Even if TPG made these scare tactic claims, the point of this thread is about crank hub slippage not whether TPG's product is effective, which I think we all know he answer to at this point. I'm am not condoning TPGs scare tactics but they put out a product that does not work as intended so the burden is on them. We don't need to sit here and keep pointing fingers and remind them they f'd up. Does everyone just want TPG to admit they made a mistake producing this product? It's pretty clear there is a crank hub issue on modified vehicles so let these vendors start fresh and produce a product that will allow customers to modify their cars without fear of crank hub failure.
I am not affiliated with Sameet,TPG or anyone in this thread. I only view this from a neutral perspective and have seen too much personal attacking, which does not bode well for this community. I honestly see no reason why Sameet is being attacked here except that his car ran some TPG Parts that failed on more than one occasion. If anything, we should be thanking him. Without those failures we would not know about the short comings about TPGs crank hub fix.
/rant
Thank you bro. I really do have nothing to gain by saying there is a problem. I had this happened to me personally on both stock and TPG hub. Who else has come forward? No one.
Appreciate 1
      02-15-2016, 09:30 AM   #92
sA x sKy
Sameet
sA x sKy's Avatar
Bangladesh
739
Rep
2,541
Posts

Drives: AY/B M4 '15
Join Date: Apr 2010
Location: Long Island, New York

iTrader: (3)

Garage List
2015 BMW M4  [0.00]
Quote:
Originally Posted by Boss330 View Post
One more slipped sprocket where WOT shifting/kickdown is related to the incident...

I wonder if the hard DCT shifts, and the effect that has on crank rpm, can be an issue here, as we have discussed before...

Was there a JB4 on the car when it happened?
The kickdown has something to do with it. Every time it happened to me, I had hit the kickdown.
Appreciate 3
      02-15-2016, 09:56 AM   #93
W///
Lieutenant General
W///'s Avatar
7434
Rep
12,293
Posts

Drives: F82GTS, E36/E92M3, Z4M
Join Date: Sep 2011
Location: SC

iTrader: (13)

Quote:
Originally Posted by sA x sKy View Post
Thank you bro. I really do have nothing to gain by saying there is a problem. I had this happened to me personally on both stock and TPG hub. Who else has come forward? No one.
Look, I have no dog in this fight either, but until I see MORE proof of this happening, I'm not ready to say it IS a problem. Is it a potential issue? For sure.

There is no such thing as a 0% failure engine, doesn't matter what company. But I better be damn sure that this is truly a problem and that the solution actually helps before I'd break open an engine. Which at this point I'm not even remotely close to that. If it's just literally a handful of engines out of thousands of cars, I wouldn't worry. No one can even say for sure why this is happening yet as far as I can tell (unless you money shifted)

My 2 cents.
__________________
Current:
16 F82 M4 GTS, Black Sapphire/Black, DCT
08 E92 M3, Sparkling Graphite/Bamboo Beige, 6MT
07 E85 Z4M Roadster, Alpine White/Red, 6MT
99 E36 M3, Techno Violet/Dove Grey, 6MT
Appreciate 0
      02-15-2016, 10:09 AM   #94
Mandi90TT
Colonel
United_States
2712
Rep
2,371
Posts

Drives: BSM 6MT M4 F82
Join Date: Aug 2014
Location: Colorado Springs

iTrader: (0)

Good summary, OP
Appreciate 1
      02-15-2016, 10:17 AM   #95
JcLusso
i build cool shit
JcLusso's Avatar
United_States
579
Rep
712
Posts

Drives: 2018 Individual SMB F80 M3
Join Date: Mar 2011
Location: Long Island, New York

iTrader: (1)

Garage List
2018 BMW X5 M  [0.00]
2016 BMW i3  [0.00]
Quote:
Originally Posted by sA x sKy
Quote:
Originally Posted by Boss330 View Post
One more slipped sprocket where WOT shifting/kickdown is related to the incident...

I wonder if the hard DCT shifts, and the effect that has on crank rpm, can be an issue here, as we have discussed before...

Was there a JB4 on the car when it happened?
The kickdown has something to do with it. Every time it happened to me, I had hit the kickdown.
Very very interesting. These are the types of details that will help figure out why this happens. Look here Boss330
__________________

Current: 2018 Individual San Marino Blue M3 | 2022 BSM X5 MC
Previous: 2018 BSM X5 M
Appreciate 1
      02-15-2016, 10:35 AM   #96
AM4ZING
Colonel
AM4ZING's Avatar
1205
Rep
2,105
Posts

Drives: M4 MW/SO 6MT, E46 M3 AW/IR 6MT
Join Date: Jan 2015
Location: Los Angeles, CA

iTrader: (0)

Garage List
2004 BMW M3  [0.00]
2015 BMW M4  [0.00]
So no stock 6MT hubs have failed besides for one 6MT with the TPG hub?
__________________
MILA | E46 BMW M3 | AW/IR | 6MT | KW V3 | CSL | Vorsteiner |
EMILY | F82 BMW M4 | MW/SO | 6MT | M Carbon Ceramic Brakes | M Performance Exhaust |
Appreciate 0
      02-15-2016, 10:41 AM   #97
CaryTheLabelGuy
Colonel
CaryTheLabelGuy's Avatar
United_States
2634
Rep
2,809
Posts

Drives: 2016 M4 ZCP
Join Date: Mar 2015
Location: Jacksonville, FL

iTrader: (0)

Just for the record, I was the first person to bring up the fact that power/torque levels shouldn't affect the crank hub or have anything to do with it spinning. I tried to explain my reasoning in the first thread towards the very beginning when we found out that crank hubs were spinning and TPG released their solution.

I've also stated to several members and friends privately that I believed the issue might be with DCT cars shifting as fast as they do, especially on kick-down going from a very low RPM to high RPM in a matter of a few milliseconds. And the few instances of this happening on 6mt cars were most likely from "money shifts" where not only is the engine experiencing higher RPM's than designed for, but the acceleration to the high RPM over-rev is very fast due to the much lower gear that was chosen by accident that facilited the "money shift".

I now personally believe that the stock crank hub is there to help protect the engine in a 6mt car in the event of an over-rev by allowing the crank hub to fail before the engine experiences valve-float which could lead to valve-to-piston contact and/or bent/broken connecting rods and wrist-pins from said over-rev. Because BMW has been using this same crank-hub assembly since 2001, they believed that this crank hub would still be effective on the new DCT cars, and for cost and manufacturing reasons they continued to use it on the DCT cars, despite the fact that the DCT cars shift much faster than their older DCT and auto trans counterparts of the past and despite the fact that a DCT car can't be over-revved.

What I believe needs to happen at this point is that BMW (or the aftermarket) needs to design a new crank hub with a proper woodruff key on the actual crank snout to keep the whole assembly from rotating altogether. TPG's design doesn't actually address the crank hub spinning at all as it can still spin and when it does, the modifications to the timing gear and pinned hub make matters even worse.

That said, I would still keep using the stock crank hub assembly on a 6mt car for reasons I stated above.
Appreciate 8
      02-15-2016, 10:43 AM   #98
sh55
Lieutenant
sh55's Avatar
United_States
220
Rep
433
Posts

Drives: %E2%80%9805 E46 ZCP 6MT and '9
Join Date: Oct 2013
Location: Brooklyn NY

iTrader: (0)

Quote:
Originally Posted by Yessir
Quote:
Originally Posted by JcLusso View Post
No one is pushing away people modifying their cars. It's just wrong however of a vendor to push a part as "necessary preventative maintenance" warning those who don't that they will have their engine at risk for catastrophic failure.

If TPG didn't push the part like it was needed by all, there would be no discussion. That is what they did as seen by the wording in their forum and facebook posts where they utilize a scare tactics to create sales.

And they still are selling a part for a profit (not to help the community) that is known to fail on their site even after all of this. It's clear that they don't care. If they cared about this community the part would no longer be for sale.
Fair enough and valid points. I am not taking sides here. I just think people are pretty harsh on Sameet who has absolutely nothing to gain by claiming there is a crank hub issue. His car is a beast and he found a weak point in the system. Whether it affects stock vehicles will be seen, which he has just posted evidence of. In my opinion, it's fair enough to say that a stock vehicle crank hub issue is minimal, if one does occur let manufacturer warranty sort out the issue. My car is stock, DCT. Am I afraid if there is a crank hub issue? No, because I'll let bmw handle it. I'm not going to blindly go out and buy parts to "remedy" something that most are still pessimistic about. Even if TPG made these scare tactic claims, the point of this thread is about crank hub slippage not whether TPG's product is effective, which I think we all know he answer to at this point. I'm am not condoning TPGs scare tactics but they put out a product that does not work as intended so the burden is on them. We don't need to sit here and keep pointing fingers and remind them they f'd up. Does everyone just want TPG to admit they made a mistake producing this product? It's pretty clear there is a crank hub issue on modified vehicles so let these vendors start fresh and produce a product that will allow customers to modify their cars without fear of crank hub failure.
I am not affiliated with Sameet,TPG or anyone in this thread. I only view this from a neutral perspective and have seen too much personal attacking, which does not bode well for this community. I honestly see no reason why Sameet is being attacked here except that his car ran some TPG Parts that failed on more than one occasion. If anything, we should be thanking him. Without those failures we would not know about the short comings about TPGs crank hub fix.
/rant
No, I think everyone wants TPG to stop SELLING the product.
__________________
______________________________
?05 E46 M3 ZCP 6MT
?06 C55 AMG
'97 911S 6MT
Appreciate 8
      02-15-2016, 11:28 AM   #99
Krish_1
Second Lieutenant
Krish_1's Avatar
United_States
116
Rep
240
Posts

Drives: '18 IR F80
Join Date: Nov 2014
Location: NY

iTrader: (0)

Thanks for posting this info, JcLusso.

My 2 cents:
TPG, just admit that you're going back to the drawing board, and more importantly, stop selling the part already.

Not sure why people are jumping on @Sa x sKY/Sameet, he didn't do anything wrong in this. He is the victim ffs.
Appreciate 3
      02-15-2016, 11:46 AM   #100
minn19
Lieutenant General
minn19's Avatar
13970
Rep
10,061
Posts

Drives: 24 Z06, 23 CT4VBW, 22 PFinder
Join Date: Jul 2013
Location: Minnesota

iTrader: (0)

Quote:
Originally Posted by Krish_1 View Post
Thanks for posting this info, JcLusso.

My 2 cents:
TPG, just admit that you're going back to the drawing board, and more importantly, stop selling the part already.

Not sure why people are jumping on @Sa x sKY/Sameet, he didn't do anything wrong in this. He is the victim ffs.
If you start telling people to pull your head out of their asses and call us losers, then you are going to get a reaction.

IMO, he's pushing the narrative that there is a widespread problem (same as TPG) and giving misleading info on the topic. E.g. saying a car is stock and had an issue when it obviously isn't stock.

I also disagree with people that think they can just mod their car whatever way they want and then complain that BMW has a faulty design. Maybe the crank hub is a bad design and maybe it isn't. We certainly are not getting anywhere with anecdotes and misleading info IMO.
Appreciate 3
      02-15-2016, 11:51 AM   #101
GrussGott
Lieutenant General
GrussGott's Avatar
United_States
18113
Rep
11,746
Posts

Drives: 2018 M4 Comp Indv
Join Date: Jun 2009
Location: Newport Beach

iTrader: (0)

Garage List
Quote:
Originally Posted by minn19 View Post
He posted evidence of another tuned car breaking. Just because he was on the pass through mode when it happened doesn't mean anything. The previous effects of being run on the tune could of led to this failure. What else is on this "stock" car?
naw, that's not true - think of guns: if you shoot some with bullets and then fire blanks at them they'll be just fiinn ... oh.

So your point would be that the cumulative effects of past bullets are important to overall health just like the cumulative effects of past mods?
__________________
Quote:
Originally Posted by TurtleBoy View Post
He tries to draw people into inane arguments, some weird pastime of his.
Appreciate 1
      02-15-2016, 11:53 AM   #102
JoeFromPA
Colonel
1791
Rep
2,995
Posts

Drives: '15 AW M3 6MT Stripper
Join Date: Aug 2013
Location: SE PA

iTrader: (0)

Wow, this forum is disappointing me on this topic....at the same time, this is how the sausage is made for problems to be identified and solutions to be found.

I'm not a mechanical engineer. Heck, I'm not even a tuner by anyone's normal definition. I'm just a car guy. I am however involved in possibly the most structured and costly research in the world, professionally. So with that background, a few summaries:

1. A few failures of a specific part were identified by members on a forum in a low-production volume high performance engine, where part failure could be catastrophic. Whenever this happens - and this happens ALOT with Porsche, Subaru, Corvette, etc. - it blows up before it either dies down or is fixed by the manufacturer (see 01 m3 bearings, Subaru Legacy GT vf40 turbo, Porsche IMS bearings, etc.)

2. The failure of the crank hub has been confused with being tuning related. I was caught by this as well, until some members corrected me and pointed out the crank hub rotation and load has no bearing on engine power output. The crank hub rotational forces have to do with change in engine speed - i.e. free revving or kicking down to 2nd gear from 6th at 70mph and dramatically changing engine speed in a very short time period.

3. TPG, a business, created an immediate product to solve a perceived issue and take advantage of a potential manufacturing issue. They marketed it as such. It is not yet known whether their product is better, worse, or the same as stock - though some analysis indicates it may be more likely to spin, but less likely to result in valve interference. They have responded very professionally on here and have acknowledged a few product failures - which for all we know could be related to existing crank issues, installation issues, or true part failure for their crank hub. Whether or not they should continue to sell their product is beyond me, but I give them credit for participating in the process and forum. They deserve better to be trashed as a company at this stage, even if you want to question their product.

4. People are rushing to point out the majority of known crank hub failures have been on tuned cars. Let's classify a few things:

- We are dealing with extremely small numbers. It's immature to identify anything as a "majority"
- People who tune are usually members of a car community and share their experiences much more frequently than non-tuners.
- As mentioned above, there is no current reason identified for tuning to increase the risk of a spun crank hub/timing gear.

5. Let's not forget that internet forums breed disinformation as quickly as they identify good information. We had one member here who appeared to blow off a vacuum hose who came on and claimed a spun crank hub based upon his symptoms, for example. Be skeptical.

..........

Let's calm down and encourage people with actual crank hub issues to share their experiences in a detailed fashion. Sameet's been talking about his crank hub issues for awhile, yet this thread is the first time he's made the comment of "Every time it was right after a kickdown". Let's also seek verification of testimonies - there are people out there who will make stuff up, or twist information to fit the version of the story they want, or who have an entrenched opinion.

TLDR version: Deep breathes everyone.
Appreciate 3
      02-15-2016, 12:04 PM   #103
JcLusso
i build cool shit
JcLusso's Avatar
United_States
579
Rep
712
Posts

Drives: 2018 Individual SMB F80 M3
Join Date: Mar 2011
Location: Long Island, New York

iTrader: (1)

Garage List
2018 BMW X5 M  [0.00]
2016 BMW i3  [0.00]
Quote:
Originally Posted by JoeFromPA View Post
TPG, a business, created an immediate product to solve a perceived issue and take advantage of a potential manufacturing issue. They marketed it as such. It is not yet known whether their product is better, worse, or the same as stock - though some analysis indicates it may be more likely to spin, but less likely to result in valve interference. They have responded very professionally on here and have acknowledged a few product failures - which for all we know could be related to existing crank issues, installation issues, or true part failure for their crank hub. Whether or not they should continue to sell their product is beyond me, but I give them credit for participating in the process and forum. They deserve better to be trashed as a company at this stage, even if you want to question their product.
1. They marketed it as necessary or you'd be risking the safety of your engine.
2. I think enough people have looked at this part and decided it definitly is weaker since they cut a notch out of the material in a spot that already has shown stress marks. (photos in OP)
3. It is worse as explained in the OP where I quote Boss330 who explains the difference when the TPG vs. OEM fail.
4. They are still selling the part and not admitting any wrong doing.
__________________

Current: 2018 Individual San Marino Blue M3 | 2022 BSM X5 MC
Previous: 2018 BSM X5 M

Last edited by JcLusso; 02-15-2016 at 12:25 PM..
Appreciate 1
      02-15-2016, 12:07 PM   #104
minn19
Lieutenant General
minn19's Avatar
13970
Rep
10,061
Posts

Drives: 24 Z06, 23 CT4VBW, 22 PFinder
Join Date: Jul 2013
Location: Minnesota

iTrader: (0)

Quote:
Originally Posted by JcLusso View Post
1. They marketed it as necessary or you'd be risking the safety of your engine.
2. I think enough people have looked at this part and decided it definitly is weaker since they cut a notch out of the material in a spot that already has shown stress marks. (photos in OP)
3. It is worse as explained in the OP where I quote Boss330 who explains the difference when the TPG vs. OEM fail.
4. They are still selling the part and not admitting any wrong doing.
I didn't write that and don't know it got a attributed to me, weird. As I definitely do not agree with that post.

It was written by @JoeFromPA
Appreciate 1
      02-15-2016, 12:26 PM   #105
JcLusso
i build cool shit
JcLusso's Avatar
United_States
579
Rep
712
Posts

Drives: 2018 Individual SMB F80 M3
Join Date: Mar 2011
Location: Long Island, New York

iTrader: (1)

Garage List
2018 BMW X5 M  [0.00]
2016 BMW i3  [0.00]
Quote:
Originally Posted by minn19 View Post
I didn't write that and don't know it got a attributed to me, weird. As I definitely do not agree with that post.

It was written by @JoeFromPA
I updated my post. The quote system must have fucked up!
__________________

Current: 2018 Individual San Marino Blue M3 | 2022 BSM X5 MC
Previous: 2018 BSM X5 M
Appreciate 1
      02-15-2016, 12:28 PM   #106
minn19
Lieutenant General
minn19's Avatar
13970
Rep
10,061
Posts

Drives: 24 Z06, 23 CT4VBW, 22 PFinder
Join Date: Jul 2013
Location: Minnesota

iTrader: (0)

Quote:
Originally Posted by JcLusso View Post
I updated my post. The quote system must have fucked up!
No prob, seen it happen a couple of times. Thanks.
Appreciate 0
      02-15-2016, 12:32 PM   #107
Boss330
Major General
Boss330's Avatar
No_Country
1712
Rep
5,108
Posts

Drives: BMW
Join Date: Mar 2012
Location: Earth

iTrader: (0)

Quote:
Originally Posted by sA x sKy
Quote:
Originally Posted by Boss330 View Post
One more slipped sprocket where WOT shifting/kickdown is related to the incident...

I wonder if the hard DCT shifts, and the effect that has on crank rpm, can be an issue here, as we have discussed before...

Was there a JB4 on the car when it happened?
The kickdown has something to do with it. Every time it happened to me, I had hit the kickdown.
Thanks for the info, appreciate it

I think my initial thoughts on this a while ago seems to correspond well with what you state here. Which would also mean that using a upgraded clutch package and a single mass flywheel most likely will increase the possibility of a failure... And that a "fix" would be beneficial on a tuned engine used for drag racing
Appreciate 0
      02-15-2016, 12:38 PM   #108
Krish_1
Second Lieutenant
Krish_1's Avatar
United_States
116
Rep
240
Posts

Drives: '18 IR F80
Join Date: Nov 2014
Location: NY

iTrader: (0)

Quote:
Originally Posted by minn19 View Post
If you start telling people to pull your head out of their asses and call us losers, then you are going to get a reaction.

IMO, he's pushing the narrative that there is a widespread problem (same as TPG) and giving misleading info on the topic. E.g. saying a car is stock and had an issue when it obviously isn't stock.

I also disagree with people that think they can just mod their car whatever way they want and then complain that BMW has a faulty design. Maybe the crank hub is a bad design and maybe it isn't. We certainly are not getting anywhere with anecdotes and misleading info IMO.
Not unlike the oil cooler episode of last year, I learnt a few things from this thread, things I may not have known if people like Sameet and OP didn't come forward: The stock crank hub may or may not have an issue, and I definitely don't think TPG's solution works. I don't have DCT, but I will be more aware while driving my car. In that sense, I think they've contributed to the forum, but that's my opinion

For what it's worth, I too don't agree with people modding the s*t out of their car and then blaming bmw for it.
Appreciate 5
      02-15-2016, 12:46 PM   #109
TPG Tuning
Lieutenant
TPG Tuning's Avatar
444
Rep
469
Posts

Drives: F80 M3 / F82 M4
Join Date: Oct 2014
Location: Blairsville PA

iTrader: (0)

The product was indeed removed for sale from the sight until further investigating. Also a new product is in the works as stated with the helpful insight of many members, a new thread will be created when the new product comes to light, this way we can collectively as a community critique the design.

Although the website had the product listed it was not being sold. There is even a member here who I doubt comes forward that had ordered a hub, we spoke with him telling him until we were finished with diagnosis of the failures at hand we would not be selling the kit. We explained we will be looking for a newer stronger solution that should be able to be tested in the coming weeks. He understood, and unfortunately called back a few days later to inform us he indeed spun his stock hub.

As for those attributing our broken motor to a spun hub, that simply is not true. Reason for not having tear down pictures is a simple one. That motor is now being used as a mock up engine in our M4 for our single turbo kit. Tear down of the engine was not a priority for us. We understand people wanting more diagnosis however the creation of stronger rods and pistons was due to logic. We know that we are going to continue pushing the limits of this platform. Why risk another stock $20,000 engine? Why not make a stronger product designed to handle higher power levels? In an effort to begin testing, we removed the M3 engine, put it in the M4 and sent it to the fabricator. The M4 engine was then built and installed in the M3. There will be an eventual tear down of that engine , it is just not top priority for us at this time.

Again we thank the community , we appreciate the productive feedback and we look forward to putting together a solution as a whole.
Appreciate 5
      02-15-2016, 12:51 PM   #110
SakhirM4
Major General
SakhirM4's Avatar
United_States
10783
Rep
8,852
Posts

Drives: '15 SO M4/'20 Z4 M40i
Join Date: Jul 2014
Location: Austin, TX

iTrader: (0)

Garage List
2020 BMW Z4 M40i  [10.00]
2015 BMW M4  [8.76]
Quote:
Originally Posted by Boss330 View Post
Unfortunately it seems this thread has become more of a fight between a few members than a constructive exchange of ideas and thoughts on the subject.
For my part, I apologize. I never intended for a fight to happen. I just feel very strongly that no one has proven that there is a design flaw with the crank hub and limited number of failures really seems to support that.

I never attacked Sameet personally, just his premise. Again, didn't mean to jack the thread.
__________________
Tejas Chapter, BMW CCA, mem #23915, President 27 years, www.tejaschapter.org
Appreciate 4
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 06:55 AM.




f80post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST