EVERYTHING You Need To Know About The S55 Crank Hub - BMW M2 M3 M4
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- Опубліковано 31 тра 2024
- After getting the crank hub done on my own m3, I felt this would be a helpful video to others who may be 50/50 on whether to do it. Lots of opinions out there, but I feel this will clear some of the air and have people understand the issue a bit better.
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To be 100% correct, crankhub failure on the S55 is due to aggressive variations of engine speed, not power or torque. This is more frequent with tuned DCTs which commonly have faster downshift and kickdown speed. This is also possible on manual cars *just like you mentionned* by a missed shift or other driver error.
I brought the precision designer Motorsports one piece CrankHub that will be completed by GDO in Central Jersey. I was going to go with Auto Coutore as well but I'm getting other FBO on my car as well. I have the same car. 2018 M Comp 6MT with 81k miles all stock but I'm getting it done next week!
Wow! You dodged a big one. Awesome work.
Wow lots of information. Fantastic video sir. Well played.
Another great video, appreciate all the information, I’ll be going down this road eventually for my peace of mind.
Good choice! Any questions along the way, let me know!
Great info, im in the process of getting my done soon
Let me know if you have any questions!
Time for some power! You will most definitely fall in love with the car all over again when you finish the tuning process
E85 is night and day difference
Can’t wait to see sound clip video with downpipes. We have the same mods (I still have stock muffler though)
love the way bmw's look and drive. hate the way they build them to fail catastrophically.
You ain't lying!
With any performance oriented motor with such high tolerances, it’s just the name of the game. But thankfully, we have the aftermarket community to solve them. Out of all the M3’s prior, this is a fairly easy solution to bulletproof the motor.
@@Scoobyfreak86I disagree. Bmw makes their parts in plastic and crank hub issues should not be a failure norm. But bmw owners just accept all the car failures like it's not a big deal. It is a very big deal. Bmw cars and motorcycles are very flawed.
And what about the Shelby gt350 voodoo motor oiler filter backing off from vibrations? What about the focus rs faulty head gaskets? What about the 991.1 Porsche gt3 motors where the connecting rod bolts loosening and causing fires? It doesn’t matter what performance oriented motor or brand it may be. High strung, high tolerance sport car motors pushing the limits will have certain limits. It’s the name of the game.
And plastics? Check every single car that is on the streets today uses plastics. Even Porsche, Lamborghini, Ferrari… they all have plastic components.
As an ex BMW Specialist Mechanic here in Malaysia, I can say that if you had 100 cars to check data most probably none of them would spin the crankhub. But also as an ex BMW Specialist Mechanic I will say knowing the quality that BMW make these parts that part is not up to the quality standards for some reason. My advice would be this, 1. If you know a good workshop that knows what they're doing & 2. If you can afford the premium prices of said workshops, get it done. If you can't afford it or don't 100% trust the workshop, don't do it. It's better to leave it be, because an improper installation which happens more often than you think is A LOT worse than leaving it stock. 😀 Just leaving my 2 cents here because I have a lot of experience with these cars and unless you drive of mod your cars like a lunatic it will be fine, I've worked on cars that have over 100k miles and are still running strong even after it's been to the track a lot.
I can’t believe your friction washer broke. How in the hell did that happen? The crank hub is not a cheap fix. I have 2017 BMW M3 competition with DCT. I baby the car and it is on the back of my mind to fix it.
I was just as surprised as you. Glad I did it!