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      12-04-2019, 04:01 PM   #1
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Lightbulb SSR Performance | S55 Keyed CrankHub Fix Full Installation Walkthrough (vid inside!)

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Many of you are already very familiar with the spun crank hub (SCH) issue on the S55 engine that comes in the M3 / M4 / M2C. If you happen to be one of the few that isn’t as familiar then fear not, you’re about to learn everything you need to know and more. We won’t be going too in depth on the SCH issue itself (since this forum is already so saturated with this information), but rather we will be focusing on the concept of the keyed crank hub fix and the installation of it.

Although the SCH issue seems to be so prevalent and openly talked about on the forum, it seems there are some questions or gaps to fill in for many when it comes to the process behind implementing / installing a keyed crank hub fix kit on the S55 engine. We went out of our way to create this write up / video demonstration in hopes of changing that!

We hope that this write up / video can help you visualize and understand the concept of the BMW S55 engine keyed crank hub upgrade as well as familiarize you with the core steps and procedures necessary to install it.

Let’s Begin!


WHAT IS A “KEYED CRANK HUB UPGRADE” AND WHY DO I NEED IT?
The keyed crank hub upgrade is a replacement of your stock crank hub unit with a unit that has two “keys” or “pins” for which 2 holes are drilled into the S55 crankshaft so that upon installation of the crankshaft bolt the new keyed crank hub can be locked into place permanently without a chance of relative rotation to the crankshaft. This allows further insurance against the chance of the crank hub “slipping” or “spinning” and un-syncing the relative angles between the crankshaft and camshafts (this can mean engine failure which will cost upwards of $20,000 to replace or at the very least leave you stranded and un-driveable until the crank hub is replaced and engine is retimed). This SCH failure has been seen on both modified and stock S55 engines. If you are modifying your car, tracking your car, or even driving spiritedly, then upgrading your crank hub is highly recommended.

IS MY CAR ON THE LIST OF AFFECTED VEHICLES?
2015+ BMW F8X M3 / M4 (CS / GTS)
2019+ BMW F87 M2C
And any other variation of BMW models utilizing the S55 engine

WHAT WILL BE NEEDED TO REPLACE MY STOCK CRANK HUB?
Two-Piece Keyed Crank Hub Kit (Maximum PSI used in this example)
(https://www.ssrperformance.com/produ...740027e7&_ss=r)
OEM Gaskets & Parts Needed
∙ Valve Cover Gasket Set
∙ Front Crank Seal - Crankshaft Seal
∙ Bolt for Timing Chain Sprocket - Intake/Exhaust Camshaft
∙ Cover Seal for Brake Booster Vacuum Pump
∙ Oil Pan Gasket
∙ Engine Oil Pan Bolt Kit (Aluminum)
∙ Coolant / Antifreeze (Blue) (1 Gallon)
∙ Engine Oil - 5W-30 Synthetic (7 Liters)
∙ Oil Filter Kit
Labor
∙ Valve Cover R&R (8.2 hours BMW book time)
∙ Oil Pan R&R (8.4 hours BMW book time)
∙ Front Crank Seal R&R (5.6 hours BMW book time)
∙ Drilling Crankshaft (1.5 hours approximated)
∙ Crank Hub R&R w/ proper torquing procedure and retiming engine (1.5 hours approximated)
Total Approximate Labor Hours: 25.2 Hours (BMW specialty tools required)

MAXIMUM PSI CRANK HUB DISCONTINUED?
As already mentioned by a few individuals on this forum, Maximum PSI has discontinued the sales of their two piece keyed crank hub. The main reason for Maximum PSI discontinuing the crank hub was increased production costs and overseas companies copying the design and undercutting Maximum PSI's prices. It got to the point where Mike, owner of Maximum PSI, decided that profit to effort ratio was no longer valuable enough for them to continue offering the product (just one of the many the difficult decisions business owners are expected to make).

However, the two piece crank hub can still be purchased on SSR Performance's website. Here is why...

Due to the fact that I have had a close business relationship with Mike over at Maximum PSI since years ago, Mike was kind enough to pass over the information so that we can continue to offer this solution direct from the manufacturing facility that Maximum PSI was working with to produce these.

Mike's unselfish act has allowed for this solution to still be offered to the end consumer through outlets like us.

With full consent from the owners of Maximum PSI we still offer the same exact solution on our website and it will continue to be available for purchase ONLY while supplies last or until any further notice is given.

DISCLAIMER:
This write up / video is for educational / entertainment purposes only. This video is not meant to be a tutorial or instructions on how to replace your S55 engine’s crank hub. This procedure requires specialty tools and S55 engine specific knowledge and therefore should only be performed by a facility that specializes in BMW engines.

Now let's move onto the fun stuff enjoy

CLICK PLAY HERE TO WATCH THE FULL INSTALLATION PROCESS HAPPEN IN ACTION
OR
CONTINUE SCROLLING TO SEE THE WRITE UP



FULL WRITE UP

2019 BMW M2 Competition (S55 Engine)



























































































Thanks for watching!

Contact Info: Please feel free to contact us for any questions that you may have!
Website: www.SSR-Performance.com
Email: info@SSR-Performance.com
Phone: (800) 438-2808
Instagram: @SSRperformance (follow us to stay updated!)
590 W Freedom Ave Orange, CA 92865 (open by appointment)

Last edited by SSR Performance; 01-13-2020 at 08:47 PM..
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      12-04-2019, 04:53 PM   #2
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Solid write up boys
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      12-04-2019, 04:55 PM   #3
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Front page worthy without a doubt! Thanks for documenting the installation process!
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      12-04-2019, 06:22 PM   #4
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Great content with helpful information!
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      12-04-2019, 06:59 PM   #5
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Quote:
Originally Posted by Justin.AutoTalent View Post
Solid write up boys
Thanks a lot my brotha

Quote:
Originally Posted by stillmatic View Post
Front page worthy without a doubt! Thanks for documenting the installation process!
Wow!! Thank you for the kind words. Glad to see that people are seeing value in this


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      12-04-2019, 07:14 PM   #6
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Wow, incredible work team. This just solidified my decision to stay stock with an extended warranty if I make it that far. This level of tear down is the stuff my nightmares are made of.
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      12-05-2019, 03:54 PM   #7
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Quote:
Originally Posted by rnguyennnn View Post
Great content with helpful information!
Thank you brother! Really appreciate the kind words

Quote:
Originally Posted by ntg44 View Post
Wow, incredible work team. This just solidified my decision to stay stock with an extended warranty if I make it that far. This level of tear down is the stuff my nightmares are made of.
Thank you sir thank you! Haha, if it is done right your car will be in better condition than when it came in and that crank hub will be a fear of the past!

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      12-05-2019, 04:43 PM   #8
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Do you guys have pictures of the crank being drilled? Before and after?

Iím curious how deep the pins go in
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      12-05-2019, 05:18 PM   #9
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Quote:
Originally Posted by jpy1980 View Post
Do you guys have pictures of the crank being drilled? Before and after?

Iím curious how deep the pins go in
No we don't.. tried but it was too difficult to get our camera in that tight space and get it to focus correctly haha. With that said, the pins are only ~6 mm tall so they are two very shallow holes.

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      12-05-2019, 05:21 PM   #10
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Damn, does it really take an experienced tech 25 hours to perform this upgrade?
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      12-05-2019, 07:38 PM   #11
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Quote:
Originally Posted by calubi View Post
Damn, does it really take an experienced tech 25 hours to perform this upgrade?
Yeah, Id think there would be at least a moderate amount of overlap?
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      12-05-2019, 08:34 PM   #12
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Quote:
Originally Posted by calubi View Post
Damn, does it really take an experienced tech 25 hours to perform this upgrade?
Book time is just for reference. There are several independent tuning shops that do not charge book time, but closer to actual work time. For instance, there are a few shops in SoCal that will install lowering springs and downpipes for $200-$250 each. Book time for these two items easily go beyond the 2-hour labor being charged.
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      12-05-2019, 11:31 PM   #13
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This was probably the best money spent on my F80, with the crank hub issue always in the back of my mind, it made driving the car the way it should be driven less enjoyable and full of anxiety.

At one point in time I thought the whole crank hub issue was overblown and was pushed by shops to sell their solutions...

Then one by one most of the YouTube F80 channels I subscribe to started spinning their hubs. Blake's Garage, Blues clues M3, AryanM3.. that started to make me nervous.

Now after having SSR do my Maximum PSI hub, I fell in love all over again with my F80. No joke. Running full E85 and using the kick down button without worry is such a liberating feeling!
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      12-06-2019, 12:26 AM   #14
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Quote:
Originally Posted by calubi View Post
Damn, does it really take an experienced tech 25 hours to perform this upgrade?
After having done the job time and time and time again, no. It does not take our technicians 25 hour to perform. However, as mentioned above, those are BMW book times for the jobs with any and all time overlap taken into account. The times listed above are defined by BMW and we have no control over them.

With that said, we donít charge 25 hours. We actually charge a flat rate fee for this job that comes out being a lower price than if we charged book time for it. Just another advantage of going to a shop that knows the procedure like the back of their hand.

Quote:
Originally Posted by theweebabySeamus View Post
Yeah, Id think there would be at least a moderate amount of overlap?
Youíre right! There most definitely is. All overlap was taken into account in the above calculation.

Quote:
Originally Posted by stillmatic View Post
Book time is just for reference. There are several independent tuning shops that do not charge book time, but closer to actual work time. For instance, there are a few shops in SoCal that will install lowering springs and downpipes for $200-$250 each. Book time for these two items easily go beyond the 2-hour labor being charged.
Couldnít have put it any better myself I applaud you sir. This is precisely the reason why we donít charge book time for this job but rather a flat rate fee which ends up being a lower price than if we were charging the above listed BMW book times.


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      12-06-2019, 01:16 AM   #15
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Very nice write up! I only have one question I havenít seen mentioned, does the timing of the drilled holes matter?
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      12-06-2019, 01:21 AM   #16
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Quote:
Originally Posted by RSXiMUS View Post
This was probably the best money spent on my F80, with the crank hub issue always in the back of my mind, it made driving the car the way it should be driven less enjoyable and full of anxiety.

At one point in time I thought the whole crank hub issue was overblown and was pushed by shops to sell their solutions...

Then one by one most of the YouTube F80 channels I subscribe to started spinning their hubs. Blake's Garage, Blues clues M3, AryanM3.. that started to make me nervous.

Now after having SSR do my Maximum PSI hub, I fell in love all over again with my F80. No joke. Running full E85 and using the kick down button without worry is such a liberating feeling!
Hmm i know that that Aryan guy spun, but I donít think the blues clue and blake garage guys spun theirs. At least I couldnít find a video on it. If you have more info on that, let me know! Iím curious as well!

Iím actually getting my crank bolt capture installed next week! Yeeee.
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      12-06-2019, 02:17 AM   #17
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Quote:
Originally Posted by jpy1980 View Post
Hmm i know that that Aryan guy spun, but I donít think the blues clue and blake garage guys spun theirs. At least I couldnít find a video on it. If you have more info on that, let me know! Iím curious as well!

Iím actually getting my crank bolt capture installed next week! Yeeee.
I think it was in the comments on one of Blakes videos where he said that he did spin it.
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      12-06-2019, 03:24 AM   #18
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Quote:
Originally Posted by jpy1980 View Post
Hmm i know that that Aryan guy spun, but I don’t think the blues clue and blake garage guys spun theirs. At least I couldn’t find a video on it. If you have more info on that, let me know! I’m curious as well!

I’m actually getting my crank bolt capture installed next week! Yeeee.
Blue clue's M3 spin was actually caught on camera. Fast forward to 7 minutes in the video. From what I gathered in the video his M3 suffered some pretty extensive damage, it was down for over a year..


Blake's Garage spun shortly after he went full E85.
He talks about it a bit here.
https://f80.bimmerpost.com/forums/sh....php?t=1623360

Last edited by RSXiMUS; 12-06-2019 at 03:32 AM..
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      12-06-2019, 06:50 AM   #19
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Any recommendations for a shop somewhat close to Ohio? California is just a bit out of range!
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      12-06-2019, 11:26 AM   #20
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Quote:
Originally Posted by RSXiMUS View Post
This was probably the best money spent on my F80, with the crank hub issue always in the back of my mind, it made driving the car the way it should be driven less enjoyable and full of anxiety.

At one point in time I thought the whole crank hub issue was overblown and was pushed by shops to sell their solutions...

Then one by one most of the YouTube F80 channels I subscribe to started spinning their hubs. Blake's Garage, Blues clues M3, AryanM3.. that started to make me nervous.

Now after having SSR do my Maximum PSI hub, I fell in love all over again with my F80. No joke. Running full E85 and using the kick down button without worry is such a liberating feeling!

Thank you for all of the kind words brotha That really means a lot to me. I'm glad we were able to take this fear out of driving your M3 for you. At the end of the day this is all just for peace of mind knowing that you can drive the car exactly how you wish.

Don't be a stranger come by soon

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      12-06-2019, 11:46 AM   #21
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      12-06-2019, 12:34 PM   #22
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Quote:
Originally Posted by RSXiMUS View Post
Blue clue's M3 spin was actually caught on camera. Fast forward to 7 minutes in the video. From what I gathered in the video his M3 suffered some pretty extensive damage, it was down for over a year..


Blake's Garage spun shortly after he went full E85.
He talks about it a bit here.
https://f80.bimmerpost.com/forums/sh....php?t=1623360
Crazy! Thanks for the info.

Why does it seem that going full e85 will spin the crank hub more than not on e85? A lot of the failures that I've seen seems to have the common thread of e85 involved.
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