DIY for spun crank hub?

[noone]

Would be interesting to see a DIY for a spun crank hub with both the aftermarket crank hub fix and just with a new bolt and retime. I'm assuming (hoping) this is something the garage mechanic with a 2 post MaxJaxx lift could accomplish.

Tutorials found thus far-

CBC (Crank Bolt Capture) DIY - https://f80.bimmerpost.com/forums/sh....php?t=1594892

Crank Hub Fix and retime - TBD as more information is compiled.

[Kuervers]

the need to the tools needed to retime the motor I'd imagine is a big reason you don't see one

[tom @ eas]

We have an overview listed here:

▀▄ eas | VTT "SplineLock" CrankHub Installation Overview for S55
https://f80.bimmerpost.com/forums/sh....php?t=1561598

[allinon72]

The only thing that's DIYable is the crank bolt capture. The rest requires special tools that would not be economical as most professional shops don't even have them.

[noone]

Originally Posted by allinon72

The only thing that's DIYable is the crank bolt capture. The rest requires special tools that would not be economical as most professional shops don't even have them.

I'd like to see a CBC DIY.

So if my hub spins, my only avenue is to take it to BMW? I'm in Jacksonville FL.

[Djdnav]

Originally Posted by noone

I'd like to see a CBC DIY.

So if my hub spins, my only avenue is to take it to BMW? I'm in Jacksonville FL.

Many shops can retime the motor, or install an aftermarket hub. Looking at the authorized dealers for the hub you want is a good place to start, or find a Bmw specific shop and ask if they’re familiar with the work.


As far as a CBC goes:

Lift car, Remove intake, remove radiator fan, remove bolts on the crank pulley, apply CBC, lock tite and install new bolts to 25’lbs.

It’s pretty straightforward. If you feel like driving to central fl, I can do it.

[noone]

Originally Posted by Djdnav

Many shops can retime the motor, or install an aftermarket hub. Looking at the authorized dealers for the hub you want is a good place to start, or find a Bmw specific shop and ask if they’re familiar with the work.


As far as a CBC goes:

Lift car, Remove intake, remove radiator fan, remove bolts on the crank pulley, apply CBC, lock tite and install new bolts to 25’lbs.

It’s pretty straightforward. If you feel like driving to central fl, I can do it.

Thanks for the offer. I do love wrenching on cars. May take you up on that some day once I get some miles on my car and am ready to tune. Right now I only have 2K on the odo so i'm not quite ready to throw a tune on yet.

CBC does sound easy since you just have to slap it on. I wonder if the CBC solution alone is permanently resolving this issue? Any long term users of the CBC-only solution out there with Stage 2 or > tuned cars? Does the CBC add any appreciable weight or anything along those lines that would change the way the engine runs, adds vibrations, etc.?

[Djdnav]

Originally Posted by noone

Thanks for the offer. I do love wrenching on cars. May take you up on that some day once I get some miles on my car and am ready to tune. Right now I only have 2K on the odo so i'm not quite ready to throw a tune on yet.

CBC does sound easy since you just have to slap it on. I wonder if the CBC solution alone is permanently resolving this issue? Any long term users of the CBC-only solution out there with Stage 2 or > tuned cars? Does the CBC add any appreciable weight or anything along those lines that would change the way the engine runs, adds vibrations, etc.?

https://f80.bimmerpost.com/forums/sh....php?t=1594892

It weighs 1.3 oz. I don’t notice any change in the operation of the engine.

I also haven't read of any cases of the hub spinning with a CBC installed, but there have been cases of aftermarket hubs spinning without a CBC installed.

[4everkidd]

Originally Posted by allinon72

The only thing that's DIYable is the crank bolt capture. The rest requires special tools that would not be economical as most professional shops don't even have them.

The tool kit is 250-500 for everything required to time and lock the crank.

Scope out amazon.

I've considered pulling the trigger on the kit.

[noone]

Originally Posted by 4everkidd

The tool kit is 250-500 for everything required to time and lock the crank.

Scope out amazon.

I've considered pulling the trigger on the kit.

Interesting. I kind of figured this as I don't see why there would be these mega tools which cost 100's and thousands of dollars needed to time an engine. And to confirm, you do NOT have to drop the engine to install the Crank Hub Fix (from whatever vendor)? Great news if true. I'd rather work on my car myself in the comfort of my garage on my lift than take it somewhere.

[noone]

Originally Posted by Djdnav

https://f80.bimmerpost.com/forums/sh....php?t=1594892

It weighs 1.3 oz. I don’t notice any change in the operation of the engine.

I also haven't read of any cases of the hub spinning with a CBC installed, but there have been cases of aftermarket hubs spinning without a CBC installed.

Thanks! I've updated my first post with this info.

[ILoveCugars]

Originally Posted by 4everkidd

The tool kit is 250-500 for everything required to time and lock the crank.

Scope out amazon.

I've considered pulling the trigger on the kit.

I got the same kit on Ebay. And free shipping lol. The kit is not that much money really and if your going to be modding your F80 yourself its worth while to have i think.

[noone]

Is this the kit that will time and lock the crank?

https://www.ecstuning.com/b-cta-tool...t/cta2886~cta/

[Djdnav]

Originally Posted by noone

Is this the kit that will time and lock the crank?

https://www.ecstuning.com/b-cta-tool...t/cta2886~cta/



If so, thank you for stopping the spreading of misinformation!

Not sure if you’re being sarcastic, but no. That kit locks cam side, you still need to lock the crank via the flywheel.

[Rotzy]

Originally Posted by Djdnav

https://f80.bimmerpost.com/forums/sh....php?t=1594892

It weighs 1.3 oz. I don’t notice any change in the operation of the engine.

I also haven't read of any cases of the hub spinning with a CBC installed, but there have been cases of aftermarket hubs spinning without a CBC installed.

I’m glad people are still finding my DIY useful.

[noone]

Originally Posted by Djdnav

Not sure if you’re being sarcastic, but no. That kit locks cam side, you still need to lock the crank via the flywheel.

Would someone mind linking to the actual tools you need to do this job? Just trying to expand my home mechanic knowledge.

The hypothetical here is that I tune my car, hub spins, and I want to fix it myself in my home garage.

Edit - So you also need to buy this? https://www.ecstuning.com/b-genuine-...IaApYaEALw_wcB

[trickcruiser]

I have the MaxPSI hub and the shop that was lined up for the install totally dropped the ball on me.

So I am also looking for more info on what tools are needed to DIY this at home. I have tried 3 different local shops and they are all either unequipped or not willing to drill the crank...

[allinon72]

Also keep in mind, if you are looking to DIY, that there isn't really enough data to prove one solution is better than the other despite the marketing. So you might spend thousands on a preventative measure and think you're good, but you may not be.

[noone]

Originally Posted by trickcruiser

I have the MaxPSI hub and the shop that was lined up for the install totally dropped the ball on me.

So I am also looking for more info on what tools are needed to DIY this at home. I have tried 3 different local shops and they are all either unequipped or not willing to drill the crank...

Maybe return the MaxPsi and get the Vargas solution? I personally wouldn't want to drill anything in the engine either.

[trickcruiser]

Originally Posted by allinon72

Also keep in mind, if you are looking to DIY, that there isn't really enough data to prove one solution is better than the other despite the marketing. So you might spend thousands on a preventative measure and think you're good, but you may not be.

Have you seen anything that shows that the MaxPsi hub has not worked as intended? I have not heard of a single failure.

Originally Posted by noone

Maybe return the MaxPsi and get the Vargas solution? I personally wouldn't want to drill anything in the engine either.

Thanks, but I have no interest in the Vargas option.

Drilling the crank is not a new, unique, or scary process. I have personally done several engine swaps, replacements, turbo builds, etc. I just do not have the tools for this particular job...

[allinon72]

Originally Posted by trickcruiser

Have you seen anything that shows that the MaxPsi hub has not worked as intended? I have not heard of a single failure.

I thought I read somewhere that someone sheared the pins, but I'm not 100% on that. Point is - failure rates are so small that it's going to take years to have enough data to truly say that one is better than the other.