Keyed crank hub solution! ;)

BMW M4 PWR · 05-09-2017, 08:10 AM

And the world just got a little more beautiful this morning...

EALm4 · 05-09-2017, 08:15 AM

interesting

hotrod2448 · 05-09-2017, 08:46 AM

Definitely looks like a more robust solution than what we've seen previously. It's still not technically keyed to the crank but, let's hope keyed to the hub is enough of an improvement to address the issue.

Are there any details on it? Like what the cogs are made out of? I'm hoping they are machined parts that have just been sandblasted or shot-peened and not printed metal.

sdstatestud88 · 05-09-2017, 10:56 AM

What is the install time for replacing the Key?

BMW M4 PWR · 05-09-2017, 12:03 PM

We will know how effective it is shortly as it will go in their 800HP shop car looking for the 9sec 1/4 record AND get beatin regularly on the street as well... not sure of the material it's constructed of just yet... this is hot off the presses and is lookin good guys

Very good chance this will hold up on anything... but we will see soon*

NorCal f80 · 05-09-2017, 12:19 PM

Quote:

Originally Posted by sdstatestud88

What is the install time for replacing the Key?

this . whats involved ?

CaryTheLabelGuy · 05-09-2017, 12:36 PM

Sub'd for more deets.

FSociety · 05-09-2017, 01:25 PM

maximumpsi

Sleeper · 05-09-2017, 02:10 PM

I hope this becomes publicly available and not just a made-to-order/one-off for the crazy builds running massive WHP.

chewbakam4 · 05-09-2017, 06:52 PM

Go go maxpsi!

9SECDD · 05-09-2017, 07:25 PM

Quote:

Originally Posted by BMW M4 PWR

We will know how effective it is shortly as it will go in their 800HP shop car looking for the 9sec 1/4 record AND get beatin regularly on the street as well... not sure of the material it's constructed of just yet... this is hot off the presses and is lookin good guys

Very good chance this will hold up on anything... but we will see soon*

Actually, Jason & the TPG boyz just set the 9sec 1/4 mile record today!

9SECDD · 05-09-2017, 07:27 PM

Quote:

Originally Posted by Sleeper

I hope this becomes publicly available and not just a made-to-order/one-off for the crazy builds running massive WHP.

Given the forum assassination of TPG, I wouldn't be too hopeful.

schnell1982 · 05-09-2017, 07:41 PM

I would hope to see lots of miles put on this before anyone claims its a fix.
Engine shops, Gintani, TPG, everyone states the only real fix is to key the crank.
Sub'd for more info and would be interesting to see it used in more then 1 engine with supporting mods etc.

schnell1982 · 05-09-2017, 07:42 PM

Quote:

Originally Posted by BMW M4 PWR

We will know how effective it is shortly as it will go in their 800HP shop car looking for the 9sec 1/4 record AND get beatin regularly on the street as well... not sure of the material it's constructed of just yet... this is hot off the presses and is lookin good guys

Very good chance this will hold up on anything... but we will see soon*

I believe that engine is fully built as well.
Not a stock at all.
Rods, pistons, etc..

Sleeper · 05-09-2017, 11:17 PM

Quote:

Originally Posted by NJ-M4

Given the forum assassination of TPG, I wouldn't be too hopeful.

Yep. Medium hopeful. It'd be nice.

AhsanU · 05-10-2017, 12:13 AM

As I was getting bootmod3 flashed on my car, I spoke to Mike about this potential fix for our M3/M4's. If I recall correctly, this will not be a very cheap fix due to labour. It should be available for everyone soon enough. Mike was gutted that his car only has a few thousand miles and he's owned it for a few years now, all thanks to the damned spun crank hub.

Either way - exciting news for everyone that wants some peace of mind. I'll be going port injection running full time E85 in a week or two then it's time to look into this fix for the crank hub. I dare not run upgraded turbos until this is addressed first.

BMW M4 PWR · 05-10-2017, 06:24 AM

Quote:

Originally Posted by NJ-M4

Actually, Jason & the TPG boyz just set the 9sec 1/4 mile record today!

Yes I JUST caught that, it had just gone public the day I posted this thread so a lot of great developments/and achievements for the F8X cars all in one day! Congrats to TPG on being the *first* to take the 9-SEC 1/4mile record

All the crap they went through on here (and in general) they deserved it* ...the next one (8's!) will only come after single turbo exhaust manifolds are made for these motors

DS_BMW · 05-10-2017, 06:33 AM

Anyone have any pics of the stock crank hub assembly?

Mike@N54Tuning.com · 05-10-2017, 01:30 PM

Quote:

Originally Posted by hotrod2448

Definitely looks like a more robust solution than what we've seen previously. It's still not technically keyed to the crank but, let's hope keyed to the hub is enough of an improvement to address the issue.

Are there any details on it? Like what the cogs are made out of? I'm hoping they are machined parts that have just been sandblasted or shot-peened and not printed metal.

Ya looks pretty beefy...

Mike

jwzimm · 05-11-2017, 09:48 PM

Interesting design. If those pins are matched to precision drilled holes in the crank snout this is a 100% solution. The tricky part is how to index the hub and gears to the cams. That is one of the reasons BMW did not key it in the first place.

i would also add some radius to those sharp corners. In a high vibe environment like this those can lead to crack formation.

hotrod2448 · 05-12-2017, 05:59 AM

Quote:

Originally Posted by jwzimm

Interesting design. If those pins are matched to precision drilled holes in the crank snout this is a 100% solution. The tricky part is how to index the hub and gears to the cams. That is one of the reasons BMW did not key it in the first place.

i would also add some radius to those sharp corners. In a high vibe environment like this those can lead to crack formation.

If those dowels do key into the crank then my previous statement about not be keyed to the crank would be incorrect. I wonder how that works out with getting everything timed correctly?

BMW M4 PWR · 05-13-2017, 08:15 AM

Quote:

Originally Posted by jwzimm

Interesting design. If those pins are matched to precision drilled holes in the crank snout this is a 100% solution. The tricky part is how to index the hub and gears to the cams. That is one of the reasons BMW did not key it in the first place.

i would also add some radius to those sharp corners. In a high vibe environment like this those can lead to crack formation.

Just an educated guess, but I sincerely see "the end" of the SCH issue with this mod. But shortly we will know for certain...

05-09-2017, 08:10 AM	#1
BMW M4 PWR Major 491 Rep 1,012 Posts Drives: Austin Yellow 6-spd manual M4 Join Date: Apr 2015 Location: MD/DC metro area iTrader: (0)	Keyed crank hub solution! ;) And the world just got a little more beautiful this morning... Attached Images
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05-09-2017, 08:15 AM	#2
EALm4 Colonel 3347 Rep 2,009 Posts Drives: SO 16' M4 Join Date: Sep 2015 Location: Baltimore iTrader: (1)	interesting
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05-09-2017, 08:46 AM	#3
hotrod2448 grand poobah 254 Rep 2,253 Posts Drives: F80 M3, F10 535i Join Date: Dec 2006 Location: Charlotte, NC iTrader: (0) Garage List 2011 335d [0.00]	Definitely looks like a more robust solution than what we've seen previously. It's still not technically keyed to the crank but, let's hope keyed to the hub is enough of an improvement to address the issue. Are there any details on it? Like what the cogs are made out of? I'm hoping they are machined parts that have just been sandblasted or shot-peened and not printed metal.
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05-09-2017, 10:56 AM	#4
sdstatestud88 Lieutenant 91 Rep 444 Posts Drives: 2017 MW F80 Join Date: Oct 2009 Location: San Jose iTrader: (1)	What is the install time for replacing the Key? __________________ 2017 Mineral White M3 Mods to COME
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05-09-2017, 12:03 PM	#5
BMW M4 PWR Major 491 Rep 1,012 Posts Drives: Austin Yellow 6-spd manual M4 Join Date: Apr 2015 Location: MD/DC metro area iTrader: (0)	We will know how effective it is shortly as it will go in their 800HP shop car looking for the 9sec 1/4 record AND get beatin regularly on the street as well... not sure of the material it's constructed of just yet... this is hot off the presses and is lookin good guys Very good chance this will hold up on anything... but we will see soon*
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05-09-2017, 12:36 PM	#7
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05-09-2017, 01:25 PM	#8
FSociety IG @bmwF9xG80 3813 Rep 7,593 Posts Drives: G80 M3, X4M, G07 X7m50 Join Date: Apr 2012 Location: NYC to NJ to Orlando FL iTrader: (3) Garage List 2023 BMW G80 M3 [0.00] 2020 BMW X4MC [0.00] 16' BMW X4 M40i [10.00] 06 Cadillac STS [0.00]	maximumpsi __________________ 60-130mph 6.5s X4M #HCP 60-130mph 5.0s G80 M3 #OrlandoAutowerks Sauce IG: @bmwF9XG80
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05-09-2017, 02:10 PM	#9
Sleeper . 660 Rep 1,059 Posts Drives: '23 BSM X5///MC Join Date: Dec 2011 Location: North iTrader: (1)	I hope this becomes publicly available and not just a made-to-order/one-off for the crazy builds running massive WHP.
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05-09-2017, 06:52 PM	#10
chewbakam4 Major 717 Rep 1,184 Posts Drives: F82 M4 Join Date: Oct 2015 Location: Malton iTrader: (0)	Go go maxpsi!
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05-09-2017, 07:41 PM	#13
schnell1982 Captain 345 Rep 966 Posts Drives: FAST Join Date: Dec 2015 Location: Southern California iTrader: (0)	I would hope to see lots of miles put on this before anyone claims its a fix. Engine shops, Gintani, TPG, everyone states the only real fix is to key the crank. Sub'd for more info and would be interesting to see it used in more then 1 engine with supporting mods etc.
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05-10-2017, 12:13 AM	#16
AhsanU i can haz horsepowr ?? 3830 Rep 1,927 Posts Drives: inconspicuous white van Join Date: Jun 2012 Location: Westchester, N.Y. iTrader: (2)	As I was getting bootmod3 flashed on my car, I spoke to Mike about this potential fix for our M3/M4's. If I recall correctly, this will not be a very cheap fix due to labour. It should be available for everyone soon enough. Mike was gutted that his car only has a few thousand miles and he's owned it for a few years now, all thanks to the damned spun crank hub. Either way - exciting news for everyone that wants some peace of mind. I'll be going port injection running full time E85 in a week or two then it's time to look into this fix for the crank hub. I dare not run upgraded turbos until this is addressed first. __________________ Dakar Yellow G80 M3 Ivory White Interior @dakar.g80 #savethemanuals Gone but not forgotten: 991.1 GT3, F80 M3 ZCP, E46 M3
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05-10-2017, 06:33 AM	#18
DS_BMW Lieutenant Colonel 1603 Rep 1,765 Posts Drives: 2022 M4 comp, 22 M240 Join Date: Sep 2013 Location: Lancaster PA iTrader: (1)	Anyone have any pics of the stock crank hub assembly?
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05-11-2017, 09:48 PM	#20
jwzimm Colonel 687 Rep 2,770 Posts Drives: '16 M3 Join Date: Jun 2011 Location: Renton, WA iTrader: (17)	Interesting design. If those pins are matched to precision drilled holes in the crank snout this is a 100% solution. The tricky part is how to index the hub and gears to the cams. That is one of the reasons BMW did not key it in the first place. i would also add some radius to those sharp corners. In a high vibe environment like this those can lead to crack formation. Attached Images __________________ 2008 Honda S2000 - Current 2016 F80 M3 - SOLD!! 2011 e92 X-Drive Coupe - SOLD!!
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