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S55 crank bolt issue
13-03-2019, 12:25 PM
Post: #1
S55 crank bolt issue
Gents.


I came across a video on YouTube where the guy tore down a S55 motor due to the crank bolt coming out.

Google also pulls up quite a few.


Has anyone experienced it? Is there a recall or something?






https://www.youtube.com/watch?v=Ff1ZbLL-wyA
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13-03-2019, 12:34 PM
Post: #2
RE: S55 crank bolt issue
i have seen a bit of it online with aftermarket offerings to correct it as well..people scared to mod them..nothing here though..think one gent mentioned that he had the issue but thats about it. No recall as far as i know

current: BMW E92 M3 (bearings could be fcukd)
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13-03-2019, 01:54 PM
Post: #3
RE: S55 crank bolt issue
I have seen 3 locally. One caused damage on a stock car.
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13-03-2019, 03:20 PM
Post: #4
RE: S55 crank bolt issue
There doesnt seem to be such a hype about it yet I think.
Maybe in time to come?

Guy on a FS thread will say " bolt fixed or something " just like NA M cars and bearings.

I've walked the walk...
Now I talk the talk...
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13-03-2019, 03:29 PM
Post: #5
RE: S55 crank bolt issue
Check the Bimmerpost forum (from the US) - apparently a not uncommon occurrence
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13-03-2019, 03:33 PM
Post: #6
RE: S55 crank bolt issue
(13-03-2019 03:20 PM)husaindindar Wrote:  There doesnt seem to be such a hype about it yet I think.
Maybe in time to come?

Guy on a FS thread will say " bolt fixed or something " just like NA M cars and bearings.

ja i think once guys have to pay for it out of motorplan you'll start hearing about it. To me if an item like that fails on 500 cars even..its an issue.

current: BMW E92 M3 (bearings could be fcukd)
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13-03-2019, 06:06 PM
Post: #7
S55 crank bolt issue
Came across this in the interwebs
https://youtu.be/Ff1ZbLL-wyA

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14-03-2019, 05:53 AM
Post: #8
RE: S55 crank bolt issue
Yes it’s a big issue in the rest of the world. Scary if your out of plan and modded.
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14-03-2019, 05:59 PM
Post: #9
RE: S55 crank bolt issue
Bloody hell, that’s worrying
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14-03-2019, 10:54 PM
Post: #10
RE: S55 crank bolt issue
2 i know of. BMW should offer a recall or an upgraded part.

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15-03-2019, 06:45 AM
Post: #11
RE: S55 crank bolt issue
(14-03-2019 10:54 PM)Twinz Wrote:  2 i know of. BMW should offer a recall or an upgraded part.

Apparently even the upgrade ( offered by various aftermarket co) is not foolproof. Especially if you’re modded.
In any event, no engine is foolproof. My 13 modded Revo GTI 7 broke a piston at 30000km. Cost me a bunch. And those engines are apparently bulletproof.
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15-03-2019, 06:50 AM
Post: #12
RE: S55 crank bolt issue
(13-03-2019 06:06 PM)Mamboza Wrote:  Came across this in the interwebs
https://youtu.be/Ff1ZbLL-wyA

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So just to be clear, BMW manufactured the s55 with a closed deck design for strength and reliability over the N55 but then they install dissolving crank bolts that destroy the engine anyway. It's like they design weak points into every modern S derived engine...the S14, S38, s50b30 didn't have any of these weaknesses, just goes to show they now design them to fail.

BMWWtf
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15-03-2019, 09:58 AM
Post: #13
RE: S55 crank bolt issue
hopefully they address this issue in the s58

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15-03-2019, 10:29 AM
Post: #14
RE: S55 crank bolt issue
(15-03-2019 09:58 AM)Chrism135i Wrote:  hopefully they address this issue in the s58

From what i know it has been redesigned. Thumbs

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15-03-2019, 10:44 AM
Post: #15
RE: S55 crank bolt issue
lets all hope for a long lasting //M motor!

current: BMW E92 M3 (bearings could be fcukd)
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16-03-2019, 10:36 AM
Post: #16
RE: S55 crank bolt issue
S58 I think is built as a single piece on the crank. But timing chain sits towards the firewall side same as B58.
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