Spun Crank Hub 6MT

RuskiRacer

Captain
Jul 17, 2019
1,209
757
0
Ride
2009 e93 335i
Yeah when I spun my hub it also welded itself into one piece . That carnage is so crazy. Any service records in that motor? No can bearing ledge repairs? Lots of time on the rev limiter? Just doesn't make a ton of sense and I'm trying to make it make sense lol. When I spun my hub my cams looked mint and I'm still reusing them in my built motor just with a different head.
 

SlowE93

Major
Jul 2, 2017
1,655
1
960
0
Just a plane ticket away !
Ride
E93
Took the engine apart tonight, and I'd really like to believe something in the exhaust side of the head failed first which in turn put a ton of stress on the crank hub. The head is absolutely mangled, the crank has damaged threads, cams are f*ucked. It looks like the crank bolt was ripped out, and the hub has welded itself together now.
You ABSOLUTELY must change your username.
You so earned N54_Destroyer
 

RuskiRacer

Captain
Jul 17, 2019
1,209
757
0
Ride
2009 e93 335i
Not unless your hub is pinned or keyed. It just attaches to the crank pulley and encloses the crank hub bolt making it impossible to turn your motor over without taking it all the way off and mine just backed out with the crankbolt when I spun my hub and was still bolted into the pulley and the pulley was backed off
 
  • Agree
Reactions: TheFixer

RuskiRacer

Captain
Jul 17, 2019
1,209
757
0
Ride
2009 e93 335i
Sir i don't need this negative energy lmao. You stay making my cars break. :confused:😂
Ok I know what you need. Closed deck darton sleeved block all the goodies , power glide or th400 built to 2k hp and a Ford 9 in. If you break that we'll have to change your name to n54_destroyer no questions asked. Because basically its hardly bmw at that point
 
  • Funny
Reactions: SlowE93

martymil

Major General
Sep 6, 2017
3,331
1,907
0
Down Under
Ride
S65 1m
It stops the bolt from backing out and loosing tension on the hub, if you spin the hub of course it will back out but at
least you know it's not from the bolt loosing its tension that you spun it but other factors due to the flawed design of the oem hub.
 
  • Informative
Reactions: fmorelli

wheela

Lieutenant
Jun 4, 2021
1,147
637
0
Twin Cities, MN
Ride
2015 e84 X1 35i Msport
When your crank hub is having a bad day...
 

Attachments

  • AptUniqueAurochs-max-1mb.gif
    AptUniqueAurochs-max-1mb.gif
    862.7 KB · Views: 10
  • Like
Reactions: RuskiRacer

SlowE93

Major
Jul 2, 2017
1,655
1
960
0
Just a plane ticket away !
Ride
E93
It stops the bolt from backing out and loosing tension on the hub, if you spin the hub of course it will back out but at
least you know it's not from the bolt loosing its tension that you spun it but other factors due to the flawed design of the oem hub.
So are you saying the hub can spin even though the bolt is fully torqued ??
 
  • Like
Reactions: martymil

martymil

Major General
Sep 6, 2017
3,331
1,907
0
Down Under
Ride
S65 1m
Yes the hub can spin from other influences even when fully torqued due to the flawed oem design.

I personally run the VTT v2 hub for about 3 years along side the CBC now since before covid and had no issues.

Just two major examples are drastic changes in rpm and axel tramping that will put enough shock load on the motor to spin the oem hub.

The major reason is from the bolt backing out and this can be avoided with the CBC so that can be easily ruled out and avoided cheaply.

Some call it a gimmick, I call it cheap insurance.

I don't agree on a lot off things with Tony but some of his products are good and that's up to the individual to choose.

I'm no VTT supporter but when a product works I use it.
 
Last edited:
  • Like
Reactions: jayntguru

SlowE93

Major
Jul 2, 2017
1,655
1
960
0
Just a plane ticket away !
Ride
E93
Yes the hub can spin from other influences even when fully torqued due to the flawed oem design.

I personally run the VTT v2 hub for about 3 years along side the CBC now since before covid and had no issues.

Just two major examples are drastic changes in rpm and axel tramping that will put enough shock load on the motor to spin the oem hub.

The major reason is from the bolt backing out and this can be avoided with the CBC so that can be easily ruled out and avoided cheaply.

Some call it a gimmick, I call it cheap insurance.

I don't agree on a lot off things with Tony but some of his products are good and that's up to the individual to choose.

I'm no VTT supporter but when a product works I use it.
You believe what you want....
Screenshot_20220409-083548_Samsung Internet.jpg

cannot back out no matter what....
Screenshot_20220409-082546_Samsung Internet.jpg

And straight from VTT......
 

SlowE93

Major
Jul 2, 2017
1,655
1
960
0
Just a plane ticket away !
Ride
E93
And in case you think I changed words or misquoted anything....
 
  • Like
Reactions: wheela

martymil

Major General
Sep 6, 2017
3,331
1,907
0
Down Under
Ride
S65 1m
I don't think you understand what the CBC suppose to do.

I said the bolt cant back out from the hub but the whole hub can slip and back out with the bolt even though its locked to the hub due to
the flawed oem design, i don't think you are not grasping what I'm saying.
 

martymil

Major General
Sep 6, 2017
3,331
1,907
0
Down Under
Ride
S65 1m
Another way would be you can weld the bolt to the hub and it will never back out but the hub can slip and back out with the bolt
even dough its one piece.

The CBC just locks the bolt so it cant loose tension on the hub but if it spins anyway its not due to the bolt loosing tension on the hub.

Hope that explains it better.
 
  • Informative
Reactions: fmorelli

martymil

Major General
Sep 6, 2017
3,331
1,907
0
Down Under
Ride
S65 1m
When your your talking about the spline lock, when its tensioned in place there and the CBC is installed to stop the bolt backing out
there is no way in the world it will spin.

Its impossible, you will break the crank before you spin the VTT spline lock hub.