New Engine required...

ChrisK · 05-31-2019, 09:38 AM

I'm not worried about this at all. The percentage of owners experiencing a crank hub spin is incredibly small - in respect to the overall circulation of S55 cars on the road.

The bearing BS with the S65 was a much bigger issue. "The tick of death" -That ruined my e92 M3.

Pilot-Z · 05-31-2019, 10:10 AM

Quote:

Originally Posted by heli_ben

Quote:

Originally Posted by M2driverWV

I think I've seen an M2c failed S55 report here from someone in the UK as well prior. Will be interested in the report as well.

That was me, mine failed a crank journal bearing. They gave me a new car.

Did they fight you on getting a new car? Seems like the right thing to do honestly.

Slyphen · 05-31-2019, 12:21 PM

thats pretty crazy, i wonder if they will fix these issues come 2021 MY.

Thescout13 · 05-31-2019, 12:49 PM

Quote:

Originally Posted by Slyphen

thats pretty crazy, i wonder if they will fix these issues come 2021 MY.

If they haven't since the 2015 M3 they are not fixing it anytime soon.

Poochie · 05-31-2019, 01:03 PM

Quote:

Originally Posted by Pilot-Z

Quote:

Originally Posted by heli_ben

Quote:

Originally Posted by M2driverWV

I think I've seen an M2c failed S55 report here from someone in the UK as well prior. Will be interested in the report as well.

That was me, mine failed a crank journal bearing. They gave me a new car.

Did they fight you on getting a new car? Seems like the right thing to do honestly.

He's extremely lucky they swapped his vehicle; I could only imagine how many hoops you would have to jump through to get a similar outcome, unless it falls under federal Lemon Laws.

You can roll the dice but I assume the approval would have to come from corporate and require a substantial amount goodwill with the dealer for them to even entertain the idea.

ChrisK · 05-31-2019, 01:04 PM

Everyone, please take a look at the master Crank Hub thread.

https://f80.bimmerpost.com/forums/sh...php?p=24053449

Here is the crazy part - this issue seems to be related to people tuning their engines (not always), but the M2C is de-tuned. That should make the S55 even more reliable.

Poochie · 05-31-2019, 01:20 PM

^^^^^

Woah, that's more than I expected. And that's only the owners that actually responded to the poll..

Shame on BMW; I guess financially it wasn't beneficial for them to discontinue the motor early in comparison to the number of failures but that's an unacceptable amount IMO.

Reminds me of this clip

:

ChrisK · 05-31-2019, 01:47 PM

Quote:

Originally Posted by Poochie

^^^^^

Woah, that's more than I expected. And that's only the owners that actually responded to the poll..

Shame on BMW; I guess financially it wasn't beneficial for them to discontinue the motor early in comparison to the number of failures but that's an unacceptable amount IMO.

Reminds me of this clip

:

Someone check my logic.

Poochie · 05-31-2019, 02:46 PM

I can't believe is a simple washer is root cause of this the S55 failure and apparently it still hasn't been addressed yet.

#Sad

akkando · 05-31-2019, 02:49 PM

Quote:

Originally Posted by ChrisK

Someone check my logic.

And already 2 stock M2C cars.

chris719 · 05-31-2019, 03:05 PM

Quote:

Originally Posted by akkando

And already 2 stock M2C cars.

Yep, the failure rate is not high, but I've seen more than 5 total stock failures just in the posts in the F80 section over the years. Not everyone takes the poll.

It would seem that power is not really the issue until you reach high levels. When the stock cars fail it might be some kind of manufacturing or vibrational issue.

aerokubectl · 05-31-2019, 03:32 PM

Quote:

Originally Posted by ChrisK

Someone check my logic.

While I agree with the point you're trying to prove, you're comparing a poll for mere enthusiasts and then lumping it against all cars sold .

You divide 5 cars into the number of people polled and even then all you're getting is enthusiast results

AlpsRider · 05-31-2019, 04:44 PM

The N55 has the same part. That means all of the M235i and OG M2s have the same potential issue. Many of the M3/M4s that had the problem we're modded. Many of them were DCTs with modded software ie. high power with a jerky tranny.

Tag · 05-31-2019, 04:47 PM

$20 says the s58 will have the same issue.

Tag · 05-31-2019, 05:00 PM

Deutsch Tech
Published on Mar 9, 2019

In this video you will see an explanation of the S55 crankhub fix (BMW M2 Competition, F80 M3, F82 M4. It is a common fault on these engines for the crankhub to spin under harsh down changes and harsh accelerations causing significant engine damage. It has happened on standard cars as well as tuned cars. This keyed up is the solution as it is slotted into place with 3 pins so it cannot spin.

omasou · 05-31-2019, 05:02 PM

Quote:

Originally Posted by Tag

Deutsch Tech
Published on Mar 9, 2019

In this video you will see an explanation of the S55 crankhub fix (BMW M2 Competition, F80 M3, F82 M4. It is a common fault on these engines for the crankhub to spin under harsh down changes and harsh accelerations causing significant engine damage. It has happened on standard cars as well as tuned cars. This keyed up is the solution as it is slotted into place with 3 pins so it cannot spin.

If that were true, don't you think BMW would remove the launch control feature?

I'm thinking it might be a proper bolt torquing issue.

Tag · 05-31-2019, 05:07 PM

Quote:

Originally Posted by omasou

If that were true, don't you think BMW would remove the launch control feature?

I'm thinking it might be a proper bolt torquing issue.

Recall reading it was due to cost savings on building the engine, although I'm not fully informed on the subject to dispute or confirm that. All I know is this has been happening on the s55 since it was first in production. I recall them replacing something, maybe it was the timing chain, can't recall, but the issue still persists. For shame BMW, for shame.

chris719 · 05-31-2019, 05:21 PM

Quote:

Originally Posted by AlpsRider

The N55 has the same part. That means all of the M235i and OG M2s have the same potential issue. Many of the M3/M4s that had the problem we're modded. Many of them were DCTs with modded software ie. high power with a jerky tranny.

Not entirely true. This almost never seems to happen on N54 and N55s for whatever reason, even modded ones. S55 may have different vibrational / resonance behavior which causes this more often. It clearly isn't only power related as we have already seen 2 cases of stock M2C doing this, which is significantly detuned.

DieGrüneHölle · 05-31-2019, 05:24 PM

Quote:

Originally Posted by ChrisK

5 cars. I believe the total M3/M4's built was 34,677+ Isnt that approx .01% That could be attributed to the tech putting the engine together, no?

Someone check my logic.

Actually as of July last year there had been about 75,000 S55 powered cars built. It will be approaching 100,000 eventually.

Failures are a fraction of a percent.

DieGrüneHölle · 05-31-2019, 05:25 PM

Quote:

Originally Posted by AlpsRider

The N55 has the same part. That means all of the M235i and OG M2s have the same potential issue. Many of the M3/M4s that had the problem we're modded. Many of them were DCTs with modded software ie. high power with a jerky tranny.

Yes N55 has the same exact crank hub parts. Even the N54 shares a similar setup and uses some of the same parts.

Spun crank hubs have happened on N54, N55, and S55. It is a weak point of this generation of motors.

Quote:

Originally Posted by chris719

This almost never seems to happen on N54 and N55s for whatever reason, even modded ones.

Seen several cases reported on various BMW forums and from vendors on the forums. There was another N54 that spun a few months ago, it was a higher hp build.

DieGrüneHölle · 05-31-2019, 05:34 PM

Quote:

Originally Posted by ChrisK

The bearing BS with the S65 was a much bigger issue. "The tick of death" -That ruined my e92 M3.

Don't even remind me.

S54 was even worse, similar bearing issues early on and a vanos system made of peanut brittle.

aerokubectl · 05-31-2019, 05:43 PM

Quote:

Originally Posted by DieGrüneHölle

Actually as of July last year there had been about 75,000 S55 powered cars built. It will be approaching 100,000 eventually.

Failures are a fraction of a percent.

You have BMW reliability stats or is that a random poll on some enthusiast website that's driving the hypothesis?

05-31-2019, 09:38 AM	#23
ChrisK Major General 4449 Rep 7,594 Posts Drives: '19 M2C Join Date: Jun 2007 Location: Chicagoland iTrader: (7) Garage List 2019 BMW M2C [7.00] 2015 Porsche Macan S [0.00]	I'm not worried about this at all. The percentage of owners experiencing a crank hub spin is incredibly small - in respect to the overall circulation of S55 cars on the road. The bearing BS with the S65 was a much bigger issue. "The tick of death" -That ruined my e92 M3. __________________ www.ReTuneTheDeTune.com 2019 M2 Competition (Sunset Orange)
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05-31-2019, 12:21 PM	#25
Slyphen Enlisted Member 59 Rep 46 Posts Drives: 2020 M2C Join Date: May 2019 Location: Kent, WA iTrader: (0) Garage List 2020 BMW M2 Comp [0.00]	thats pretty crazy, i wonder if they will fix these issues come 2021 MY.
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05-31-2019, 01:04 PM	#28
ChrisK Major General 4449 Rep 7,594 Posts Drives: '19 M2C Join Date: Jun 2007 Location: Chicagoland iTrader: (7) Garage List 2019 BMW M2C [7.00] 2015 Porsche Macan S [0.00]	Everyone, please take a look at the master Crank Hub thread. https://f80.bimmerpost.com/forums/sh...php?p=24053449 Here is the crazy part - this issue seems to be related to people tuning their engines (not always), but the M2C is de-tuned. That should make the S55 even more reliable. __________________ www.ReTuneTheDeTune.com 2019 M2 Competition (Sunset Orange)
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05-31-2019, 01:20 PM	#29
Poochie Luxury at the redline :) 9103 Rep 7,563 Posts Drives: 2016 M2 Join Date: Aug 2012 Location: NYC iTrader: (3)	^^^^^ Woah, that's more than I expected. And that's only the owners that actually responded to the poll.. Shame on BMW; I guess financially it wasn't beneficial for them to discontinue the motor early in comparison to the number of failures but that's an unacceptable amount IMO. Reminds me of this clip :
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05-31-2019, 02:46 PM	#31
Poochie Luxury at the redline :) 9103 Rep 7,563 Posts Drives: 2016 M2 Join Date: Aug 2012 Location: NYC iTrader: (3)	I can't believe is a simple washer is root cause of this the S55 failure and apparently it still hasn't been addressed yet. #Sad Attached Images
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05-31-2019, 04:44 PM	#35
AlpsRider Brigadier General 2865 Rep 3,842 Posts Drives: M2 Competition, LBB, 6MT Join Date: May 2015 Location: Earth iTrader: (0)	The N55 has the same part. That means all of the M235i and OG M2s have the same potential issue. Many of the M3/M4s that had the problem we're modded. Many of them were DCTs with modded software ie. high power with a jerky tranny.
	Appreciate 0 Quote

05-31-2019, 04:47 PM	#36
Tag this is the way 18128 Rep 8,514 Posts Drives: N-1 starfighter Join Date: Jan 2007 Location: Chicago iTrader: (3)	$20 says the s58 will have the same issue.
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05-31-2019, 05:00 PM	#37
Tag this is the way 18128 Rep 8,514 Posts Drives: N-1 starfighter Join Date: Jan 2007 Location: Chicago iTrader: (3)	Deutsch Tech Published on Mar 9, 2019 In this video you will see an explanation of the S55 crankhub fix (BMW M2 Competition, F80 M3, F82 M4. It is a common fault on these engines for the crankhub to spin under harsh down changes and harsh accelerations causing significant engine damage. It has happened on standard cars as well as tuned cars. This keyed up is the solution as it is slotted into place with 3 pins so it cannot spin.
	Appreciate 2 ChrisK4449.00 mcvaughan704.00 Quote