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      12-21-2019, 01:57 AM   #45
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...I heard they are no longer selling this due to manufacturing issues?
I think if you read the thread you'll get the answer to your question.
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      12-21-2019, 06:09 AM   #46
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Has there ever been an M (S) engine without a lethal design fault?
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      12-21-2019, 10:26 AM   #47
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Has there ever been an M (S) engine without a lethal design fault?
S62 (E39 M5).
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      12-21-2019, 10:33 AM   #48
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Originally Posted by BDO View Post
Has there ever been an M (S) engine without a lethal design fault?
All of them. It's the end user that creates the so called flaws via abuse and/or modifications.
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      12-21-2019, 10:45 AM   #49
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Awesome job...this has to be like $7-10k install in a high labor cost state?
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      12-21-2019, 10:52 AM   #50
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Holy hell. Had no idea it was that labor intensive. How much does the whole ordeal cost?
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      12-21-2019, 11:48 AM   #51
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I think my BMW dealer bills out at something like $165/hr. Imagine the money spent on a project like this!

I'll enjoy the peace of mind of my not-a-real-M-engine N55. It's handled the moderate power increase flawlessly over the past 3 years. Great engine for the street.
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      12-21-2019, 12:05 PM   #52
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Quote:
Originally Posted by Stage IV View Post
I'll enjoy the peace of mind of my not-a-real-M-engine N55. It's handled the moderate power increase flawlessly over the past 3 years. Great engine for the street.
The S55 would have no SCH issues if it were rated at 300whp from the factory, and if people did not push them to 550+ whp. With that said, the N54 and N55 are not exempt from spinning.

If you really want to be safe, you need to go with the B58/S58 platform.
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      12-21-2019, 12:08 PM   #53
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Originally Posted by nars3000 View Post
If you really want to be safe, you need to go with the B58/S58 platform.
I am sure some other issue will pop up when people really start pushing the S58. It always seems to happen to every M engine in recent past.
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      12-21-2019, 12:09 PM   #54
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Quote:
Originally Posted by F32Fleet View Post
S62 (E39 M5).
While the S62 is a pretty reliable motor if well-taken care of, it isn't without issues.

The S62 does suffer from rod bearing issues as well, not to the extent of the S65 but still occurs which could lead to catastrophic engine failure. Also, the plastic timing chain guides do like to self destruct and you'll find pieces of them in your oil pan which is a $$$ job. Ask me how I know.

Also lots of little issues like VANO seal leaks, CP and MAF sensors like to go out frequently.

I still think the S55 is one of the most reliable M engines especially once you upgrade the crank hub.
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      12-21-2019, 06:20 PM   #55
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This makes me want to sell my M2C. That's a huge job just to start off with...and then mods begin. Not cool!
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      12-21-2019, 06:32 PM   #56
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Quote:
Originally Posted by nars3000 View Post
Quote:
Originally Posted by Stage IV View Post
I'll enjoy the peace of mind of my not-a-real-M-engine N55. It's handled the moderate power increase flawlessly over the past 3 years. Great engine for the street.
The S55 would have no SCH issues if it were rated at 300whp from the factory, and if people did not push them to 550+ whp. With that said, the N54 and N55 are not exempt from spinning.

If you really want to be safe, you need to go with the B58/S58 platform.
Lol yeah because the engine makes 300hp stock.
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      12-21-2019, 07:55 PM   #57
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Quote:
Originally Posted by KevM2 View Post
Is it a real oversight? they've made this to be the weakest link as sort of a "fuse" as to protect other more expensive engine components... any truth to this?
Yeah, is this a "fix", or does it just move the failure point to blowing the entire engine?

That wouldn't seem like peace of mind ...
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      12-21-2019, 08:00 PM   #58
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Quote:
Originally Posted by nars3000 View Post
Quote:
Originally Posted by Stage IV View Post
I'll enjoy the peace of mind of my not-a-real-M-engine N55. It's handled the moderate power increase flawlessly over the past 3 years. Great engine for the street.
The S55 would have no SCH issues if it were rated at 300whp from the factory, and if people did not push them to 550+ whp. With that said, the N54 and N55 are not exempt from spinning.

If you really want to be safe, you need to go with the B58/S58 platform.
Just give it more time, I'm sure the gremlins of the B58/S58 will be coming out soon enough
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      12-21-2019, 09:47 PM   #59
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If you are not planning to tune you engine, this mod is not necessary and not really recommenced as you will void your warranty and create more chance to get a problem on the engine with all this removal, mounting of the engine parts.
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      12-21-2019, 10:25 PM   #60
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Quote:
Originally Posted by Roch M4 View Post
If you are not planning to tune you engine, this mod is not necessary and not really recommenced as you will void your warranty and create more chance to get a problem on the engine with all this removal, mounting of the engine parts.
This. I love the 20+ hours of labor for an issue they may never arise.

Why are there not any German tuners who think this is a big enough issue to address?
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      12-21-2019, 10:35 PM   #61
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Bolt capture is a more economical way if attempting to fix sch
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      12-22-2019, 06:54 AM   #62
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Bolt capture is a more economical way if attempting to fix sch
That's what I thought. I read about that. Does the same thing without costing $10k in labor.
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      12-22-2019, 08:20 AM   #63
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Quote:
Originally Posted by icegrill View Post
Quote:
Originally Posted by Roch M4 View Post
If you are not planning to tune you engine, this mod is not necessary and not really recommenced as you will void your warranty and create more chance to get a problem on the engine with all this removal, mounting of the engine parts.
This. I love the 20+ hours of labor for an issue they may never arise.

Why are there not any German tuners who think this is a big enough issue to address?
More proficient at driving?
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      12-22-2019, 11:23 AM   #64
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Quote:
Originally Posted by nars3000 View Post
The S55 would have no SCH issues if it were rated at 300whp from the factory, and if people did not push them to 550+ whp. With that said, the N54 and N55 are not exempt from spinning.

If you really want to be safe, you need to go with the B58/S58 platform.
N54 and N55 spun crank hub is rare. Only time that I saw a spun crank hub was on a built motor.

Can't wait to play with a s58 platform! BMW redesigned some things so it should not have the same issue as the S55.

Quote:
Originally Posted by icegrill View Post
This. I love the 20+ hours of labor for an issue they may never arise.

Why are there not any German tuners who think this is a big enough issue to address?
This issue is pretty common I feel, especially if you are pushing the S55. I know a friend who spun it 3 times on full e85 tune. Ended up trading it in and getting into a different M car.

I have seen some guys overseas using other brand products, not what we have here in the states. Mosselman offers a fix but I can't see how it would work. They only key the timing gear to the crank hub itself. Oil pump sprocket and rest of the hub to crank is stock.





What do you guys think about the Gintani crank fix?
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      12-22-2019, 12:21 PM   #65
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If 25 hours of book time is not what is charged, what is more realistically charged? 16 hours of labor?
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      12-22-2019, 03:00 PM   #66
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Quote:
Originally Posted by GrussGott View Post
Yeah, is this a "fix", or does it just move the failure point to blowing the entire engine?

That wouldn't seem like peace of mind ...
KevM2

This is not a fuse,
I read something by one of the engineers on the engine that they made it this way because they thought it would be easier to work on.
It has nothing to do with failing first before blowing the engine.
They didn't think they would be failing or spinning though.
I think thats most likely why BMW has now gone to a non removable design on the next generation engines
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