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      10-23-2019, 05:58 AM   #67
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What about hard launches? Equally hard on drivetrains I’d imagine?
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      10-23-2019, 09:29 AM   #68
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Quote:
Originally Posted by armiii View Post
that sounds ridiculous to me,why bmw does not create something for protection?
They have the crank position sensor, and it most cases it's damn good at saving the motor.

In terms of a fix who knows maybe if they make a fix it's an admission of guilt and thus an expensive mass recall must be done. So on a cost analysis maybe it's cheaper to fix the few blown motors that occur vs. repair all the motors ever made, essentially the Subaru approach for ringland failure.
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      10-23-2019, 09:54 AM   #69
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Quote:
Originally Posted by armiii View Post
that sounds ridiculous to me,why bmw does not create something for protection?
Every engine has it’s weak point. This is ours. If it’s not one thing, it’s another. Keep in mind the failure for the M2C is 1 car that we know of. Pretty damn good odds if you ask me. Even if it’s 5 or 10, still pretty good. Look how prevalent issues are with previous M cars. Rod bearing on the E92 M3, E46 M3 had issues with vanos and sub frame cracking, E60 M5 you basically need 2 to keep one on the road at all times, etc.

Even other manufacturers have similar issue, The FA20 motor is subbies throw rods even when stock. My previous S2K ate timing chain tensioners and would need constant valve maintenance. So on and so forth.
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      10-23-2019, 10:03 AM   #70
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Quote:
Originally Posted by pz619 View Post
Every engine has it’s weak point. This is ours. If it’s not one thing, it’s another. Keep in mind the failure for the M2C is 1 car that we know of. Pretty damn good odds if you ask me. Even if it’s 5 or 10, still pretty good. Look how prevalent issues are with previous M cars. Rod bearing on the E92 M3, E46 M3 had issues with vanos and sub frame cracking, E60 M5 you basically need 2 to keep one on the road at all times, etc.

Even other manufacturers have similar issue, The FA20 motor is subbies throw rods even when stock. My previous S2K ate timing chain tensioners and would need constant valve maintenance. So on and so forth.
+1
And another thing to note issues are always blown out of proportion on the forum since everyone comes onto these things to complain.


Hmm weird ive never heard of the FA20 throwing rods, that's not good lol.
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      10-23-2019, 11:00 AM   #71
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Quote:
Originally Posted by F87source View Post
+1
And another thing to note issues are always blown out of proportion on the forum since everyone comes onto these things to complain.


Hmm weird ive never heard of the FA20 throwing rods, that's not good lol.
Yeah I didn't realize how prevalent it is. Have 2 coworkers that have WRXs (1 modded, one note) and both blew rods. Thought it was weird and popped on to NASIOC and there is a thread basically dedicated to rods coming out.

https://forums.nasioc.com/forums/sho....php?t=2749732
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      10-23-2019, 11:53 AM   #72
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Quote:
Originally Posted by pz619 View Post
Yeah I didn't realize how prevalent it is. Have 2 coworkers that have WRXs (1 modded, one note) and both blew rods. Thought it was weird and popped on to NASIOC and there is a thread basically dedicated to rods coming out.

https://forums.nasioc.com/forums/sho....php?t=2749732
Oh damn that sucks. I had an frs that was supercharged and made 270whp without issues.
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      10-23-2019, 03:08 PM   #73
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this issue is minor and easily prevented, I used to own a TVR speed six, now THATS a car that keeps you up at night.
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      10-23-2019, 03:16 PM   #74
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this issue is minor and easily prevented, I used to own a TVR speed six, now THATS a car that keeps you up at night.
A TVR?

You sir are one brave fellow...
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      10-23-2019, 07:01 PM   #75
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Quote:
Originally Posted by BroDoze View Post
What about hard launches? Equally hard on drivetrains I’d imagine?
Most likely, that's a huge shock on the drivetrain. It might be on the same level or a bit less than just having the dct kick down.
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      10-30-2019, 05:02 AM   #76
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As a result,

can we say that in common decision there is no need to update the crank for a new M2C?
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      10-30-2019, 05:23 AM   #77
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In all likelyhood you'll be fine, but if you mod then as ever, you have to be prepared for the worst....
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      10-30-2019, 02:59 PM   #78
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Quote:
Originally Posted by armiii View Post
As a result,

can we say that in common decision there is no need to update the crank for a new M2C?
The crank itself if forged and is really strong, the issue lies in the hub and how the crank isn't keyed.

But yeah like others have said if it's stock just keep it as is, maybe get a crank bolt capture but that's it. Because if the hub solutions go it'll probably take your motor out too.
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      10-30-2019, 04:56 PM   #79
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Quote:
Originally Posted by armiii View Post
As a result,

can we say that in common decision there is no need to update the crank for a new M2C?
As I am most likely to lease over the warranty period this is the route I'm taking. If I decide to buy out then I'll ponder upgrade fix.
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      10-30-2019, 09:06 PM   #80
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Quote:
Originally Posted by pz619 View Post
Every engine has it’s weak point. This is ours. If it’s not one thing, it’s another. Keep in mind the failure for the M2C is 1 car that we know of. Pretty damn good odds if you ask me. Even if it’s 5 or 10, still pretty good. Look how prevalent issues are with previous M cars. Rod bearing on the E92 M3, E46 M3 had issues with vanos and sub frame cracking, E60 M5 you basically need 2 to keep one on the road at all times, etc.
Those rod bearings you mention weren't failing en mass until the vehicles were out of warranty. Now they're done as preventative maintenance.

One M2 after two years of production. Who knows what percentage of M2s will eventually succumb to the issue. Maybe you will need two M2Cs to keep one on the road in 10 years. The only thing we know now is BMW doesn't have a great track record compared to, say, Lexus.
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      10-30-2019, 09:56 PM   #81
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Quote:
Originally Posted by DriverDaily View Post
Those rod bearings you mention weren't failing en mass until the vehicles were out of warranty. Now they're done as preventative maintenance.

One M2 after two years of production. Who knows what percentage of M2s will eventually succumb to the issue. Maybe you will need two M2Cs to keep one on the road in 10 years. The only thing we know now is BMW doesn't have a great track record compared to, say, Lexus.
I get what you are saying, but here are my thoughts. The S55 has been in circulation since 2014 as a 2015 model year in the M3/M4. Not going to make a claim that this engine is ultra reliable, but it seems to be holding up better than others. There are examples that are well over 100K. Seems as though if the crank hub doesn’t fail, this is a pretty reliable motor. However, to your point, time will tell.
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      10-30-2019, 10:27 PM   #82
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Quote:
Originally Posted by pz619 View Post
Kickdown is a feature on the DCT. At the end of the accelerator pedal there is a resistance point, if you push past that point it activates the lowest gear possible based on engine RPM. So if you are cruising around in 7th it can drop 2-3 gears almost immediately and in some cases pretty violently. There is a theory that this happens so fast and strongly that it could knock the crank hub out of place.

Us 6MT guys/gals worry less about it since we'd have to either shift at speeds that wouldn't be practical, unless of course you money shift. Which unfortunately, is what one poor soul did. It's probably not the only way to spin the crank hub, but it makes sense. Luckily I think the problem is overblown as it sounds like there has been 1 known (to us) failure that wasn't a money shift.

If you are cautious like me, you can get mechanical breakdown insurance if your car is less than a year old. I think you can keep it on for 100k miles. In my case, for about 90/year I'm covered if my crank hub decides to loosen up. Seems reasonable for an engine that could cost over 20k to replace.
Do you know how MBI works if you have a tune? I assume it will be hard to get them to cover it?
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      10-30-2019, 10:36 PM   #83
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Do you know how MBI works if you have a tune? I assume it will be hard to get them to cover it?
I'm not clear on it, but was going to look into it further if I decide to tune. Looking at the verbiage on the website, it doesn't seem to indicate if tuning was allowed or not. When I initially signed up for it I asked the agent and she said it would be covered, but but I'm not 100% certain. Here is what the website says:



*MBI Exclusions

Exclusions to this policy include regular maintenance services such as tune-ups, suspension alignment, wheel balancing, filters, lubrication, coolant and fluids, spark plugs, brake pads and linings, brake shoes, and tires. Also, breakdown repairs made necessary by intentional damage, corrosion, misuse, or improper maintenance are not covered. Mechanical Breakdown Insurance coverage is in excess of coverage provided by your manufacturer's warranty. Read the policy amendment for the complete terms and conditions of this coverage.

Last edited by pz619; 10-30-2019 at 10:42 PM..
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      10-31-2019, 01:23 AM   #84
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Quote:
Originally Posted by pz619 View Post
I'm not clear on it, but was going to look into it further if I decide to tune. Looking at the verbiage on the website, it doesn't seem to indicate if tuning was allowed or not. When I initially signed up for it I asked the agent and she said it would be covered, but but I'm not 100% certain. Here is what the website says:



*MBI Exclusions

Exclusions to this policy include regular maintenance services such as tune-ups, suspension alignment, wheel balancing, filters, lubrication, coolant and fluids, spark plugs, brake pads and linings, brake shoes, and tires. Also, breakdown repairs made necessary by intentional damage, corrosion, misuse, or improper maintenance are not covered. Mechanical Breakdown Insurance coverage is in excess of coverage provided by your manufacturer's warranty. Read the policy amendment for the complete terms and conditions of this coverage.
Thanks, seems like it might fall under misuse if they wanted to go down that road.
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      11-01-2019, 08:27 AM   #85
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Do we have an engineer working at BMW in this forum to discuss this issue?
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      11-04-2019, 03:12 PM   #86
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Mine spun and took the entire motor + somehow transmission with
Took like 6 months to fix
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      11-04-2019, 06:38 PM   #87
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Quote:
Originally Posted by FSU_Logan View Post
Mine spun and took the entire motor + somehow transmission with
Took like 6 months to fix
Damn that really sucks.
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      11-04-2019, 07:46 PM   #88
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Quote:
Originally Posted by FSU_Logan View Post
Mine spun and took the entire motor + somehow transmission with
Took like 6 months to fix
Was this your M2C?

Under what conditions?
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