Welp, looks like S55 crank hub? 63k miles/Stock ..Any shop recommendations?

[devzw3]

Never would have thought this would happen to me but here we are. Was driving in town today, went from 45mph up to 60mph passing a car in 5th gear (I have a 2019 manual 6 speed F82), then ended up coasting to a stop for a yellow light and boom "Drivetrain Malfunction"

I almost couldn't comprehend those words but I immediately pulled over to run codes and have the 130F20 as well as the 120408 "due to reaction".

The craziest thing to me is I don't race or track this car and have never seen below 20mpg average fuel consumption between fill-ups. Now I don't baby it either, but I do rarely ever get past 6.5-7k rpm. Most of my miles are from driving 180 mile round trips of cruising to the coast and back and some fun canyon turns. I've owned the car from 12k miles (CPO) to current 63k, about 2.65 years. It is bone stock on performance and always has been, no tunes or bolt ons. Just some exterior carbon and lowering springs.

So! I had to baby it home about 30 miles where I didn't shift over 3k rpm and didn't pass 55mph. Everything still sounds ok and not clanking or anything so I'm trying to be optimistic that the motor will be ok with a re-timing plus pinned crank hub. I really thought with my driving habits and stock power that I didn't need to do the upgrade till I wanted more 'go-fast' but I guess the myths were correct unless something else could be the culprit? I doubt it. I cleared the codes and they came back within 5 minutes so something is definitely not right. What a sad day!

***Does anybody have a recommendation of an experienced shop in SoCal that I can trust with doing the crank hub and or scoping cylinders to see if I have other damage and need a motor? Thanks for any help!***

Oh and get those crank hubs done ya'll before you end up like me!! I'm still in shock over here. Guess I should of upgraded to the S58 already lol at least I can now look forward to more power upgrades finally if all goes well *crossing fingers*

[Slow M3]

Cool story bro. Good luck with whatever is up with your car.

[JoeFresh]

S5x performance in fullerton. They just did my car begining of January.

I am also in Palmdale its worth the trip down.

[mapster37]

If you're able to continue driving it's probably not the crankhub

[N1rve]

Originally Posted by mapster37

If you're able to continue driving it's probably not the crankhub

Could be a slight change to the timing. Probably still recoverable. Though I personally wouldn’t have continued to drive on it LOL.

I would have immediately pulled over and called for a tow to minimize any damage to the engine.

[devzw3]

Appreciate those of you that gave me some recommendations! And for others that I may have annoyed, I’m not sure how but ok? I was just saying hey apparently crank hub can spin on a bone stock babied F8X and tried to share the back story for others debating a pinned hub.

I knew the risk I was taking when driving the car home, a tow would also cost me a bumper and lip. I didn’t get a check engine light or anything and the car drove like normal beside lack of power (which I didn’t really notice shifting at 2500rpm). So I made my decision. If I ruined it so be it lol would be a good excuse for a built motor swap. The M is just a weekend car, I’m not too upset about the situation just more surprised than anything. All I ever read is “if you’re stock and manual it’ll never happen!” But we all know it’s a possibility and it finally happened for me

Just sharing my personal experience. Thank you again for the positive info though!

[theweebabySeamus]

Respectfully, it is known that it can happen on a stock car. Less likely, sure, but definitely has happened.

I got mine done at S5X as well. To echo others sentiments, I would not turn the engine over again until you known what has happened.

All the best OP, and I hope it comes out well.

[devzw3]

Originally Posted by theweebabySeamus

Respectfully, it is known that it can happen on a stock car. Less likely, sure, but definitely has happened.

I got mine done at S5X as well. To echo others sentiments, I would not turn the engine over again until you known what has happened.

All the best OP, and I hope it comes out well.

I appreciate that, yes that’s the plan, I’m trailering the car from here forward but will have bumper off to avoid damage getting up and down the trailer. I sent S5X performance a form today on their website to see what we can get planned. Looking forward to getting it all fixed. Would you guys recommend the oil pan gasket getting done too? Since S5X doesn’t drop the pan?

[theweebabySeamus]

I didn't do mine. I don't think there's a lot of carry over the way S5X does it, but they do offer decent rates especially if it's already coming in for service.

[N1rve]

Originally Posted by devzw3

I appreciate that, yes that’s the plan, I’m trailering the car from here forward but will have bumper off to avoid damage getting up and down the trailer. I sent S5X performance a form today on their website to see what we can get planned. Looking forward to getting it all fixed. Would you guys recommend the oil pan gasket getting done too? Since S5X doesn’t drop the pan?

These are things that you could replace during a crank hub job...

1. Valve Cover / Valve Cover Gasket -- I would get one from FCP Euro and throw it on. The PCV in the valve cover tends to go bad and they need to replace the gasket anyways. Rather than doing it again in the future...do it now.

2. Two belts -- the front of the engine is more accessible.

3. Top Mount Intercooler -- since it's being removed anyways to get the work done.

If I can recall .. oil pan needs the subframe to be dropped. I am not sure the sub frame is dropped from the crank hub work.

[devzw3]

Originally Posted by N1rve

These are things that you could replace during a crank hub job...

1. Valve Cover / Valve Cover Gasket -- I would get one from FCP Euro and throw it on. The PCV in the valve cover tends to go bad and they need to replace the gasket anyways. Rather than doing it again in the future...do it now.

2. Two belts -- the front of the engine is more accessible.

3. Top Mount Intercooler -- since it's being removed anyways to get the work done.

If I can recall .. oil pan needs the subframe to be dropped. I am not sure the sub frame is dropped from the crank hub work.

This is great info! I know they say on the website at S5X that they install the following included with crank hub:
New Valve Cover Gasket, Front Main Seal, Cam Gear + Crank Bolts, Oil Pump Sprocket Retainer, Front Cap/Seal, & NGK 97506 Spark Plugs Included (depending on package), Motul 8100 X-cess gen2 (5W-40) + MANN Oil Filter, and a Full Coolant Flush to finish the service.

They also offer free installation of Charge Pipes, Intakes, & J Pipe.

I do want to ask about belts and I myself was thinking about top mount intercooler, I’ll be inquiring about that too and will provide a valve cover to throw in with the change of the gasket/work.

I think you are correct about dropping the subframe for the OPG, S5X will charge an extra $600 if you want to do the gasket at the same time as crank hub. I’m not sure the regular cost of the OPG if doing the service by itself but I saw on some 328i’s in the forums it was around $1800 for the same type of labor involved so if this gasket really is an interval item, $600 sounds like a great deal vs $1800+ in the future. Are we seeing a majority OPG’s going out at XXthousand miles on the S55? This is the first I’ve heard about it

[ra2289]

Did mine at S5X performance and added spark plugs and belts to the crank hub job. The plugs were extra but the belts they included, might be wrong on the belts but pretty sure.

Didn’t do a new valve cover only because I had recently installed one myself prior to the crank hub. It wasn’t planned this way, S5X had a sale on Instagram and decided to take advantage spur of the moment.

Did my crank hub at 70k miles and they said the oil pan was weeping a bit. Not concerning but something to keep an eye on.

[N1rve]

Originally Posted by devzw3

This is great info! I know they say on the website at S5X that they install the following included with crank hub:
New Valve Cover Gasket, Front Main Seal, Cam Gear + Crank Bolts, Oil Pump Sprocket Retainer, Front Cap/Seal, & NGK 97506 Spark Plugs Included (depending on package), Motul 8100 X-cess gen2 (5W-40) + MANN Oil Filter, and a Full Coolant Flush to finish the service.

They also offer free installation of Charge Pipes, Intakes, & J Pipe.

I do want to ask about belts and I myself was thinking about top mount intercooler, I’ll be inquiring about that too and will provide a valve cover to throw in with the change of the gasket/work.

I think you are correct about dropping the subframe for the OPG, S5X will charge an extra $600 if you want to do the gasket at the same time as crank hub. I’m not sure the regular cost of the OPG if doing the service by itself but I saw on some 328i’s in the forums it was around $1800 for the same type of labor involved so if this gasket really is an interval item, $600 sounds like a great deal vs $1800+ in the future. Are we seeing a majority OPG’s going out at XXthousand miles on the S55? This is the first I’ve heard about it

Did some research -- subframe is dropped. So, you might as well do the OPG. The age of the gasket seems to be more important than the mileage. And you're right it's roughly in that price range if it's done independently. Like doing my valve cover was like $2K done independently. I might as well had done a crank hub job and throw in a valve cover LOL.

[Vantablack]

Studio RSR in La Habra!

$1750 for same day crankhub install. Comes with oil change and coolant flush.

I paid more to get a 4-pin crankhub installed by them, but the grand total was less than $2100. The only shop I will take my BMW to from now on

[devzw3]

Alright, I talked to S5X today and I’m taking the car out to them on Friday, they will tear into it on Monday to find out if it is for sure a spun hub, check for any other damage, and plan on doing a re-timing and the 4 pin hub as long as everything else checks off. I am also doing a genuine BMW valve cover and have them doing spark plugs too (I’m due right now anyway). I will probably do the belts for good measure cause they look like a small pain to DIY but I’m saving charge pipes and top mount for myself as I do enjoy working on the car.

I’m hoping it goes smooth and nothing but good news! I’ll update when things proceed! If anyone thinks of anything else before Friday, let me know!

[N1rve]

Originally Posted by devzw3

Alright, I talked to S5X today and I’m taking the car out to them on Friday, they will tear into it on Monday to find out if it is for sure a spun hub, check for any other damage, and plan on doing a re-timing and the 4 pin hub as long as everything else checks off. I am also doing a genuine BMW valve cover and have them doing spark plugs too (I’m due right now anyway). I will probably do the belts for good measure cause they look like a small pain to DIY but I’m saving charge pipes and top mount for myself as I do enjoy working on the car.

I’m hoping it goes smooth and nothing but good news! I’ll update when things proceed! If anyone thinks of anything else before Friday, let me know!

Some people usually do pulleys, tensioner, and belts at the same time.

There's a kit for it.

https://www.fcpeuro.com/products/bmw...ental-8k1400kt

Some people replace water pump while doing belts too... but personally I'm not doing to do it until the 100K/10 year mark or earlier if I encounter a problem. I did my belts around the ~60K miles/~5.5 year mark -- no pulley or tensioner done though.

[devzw3]

Update time!
I trailered the car out to S5X last Friday, went very well, the guys started working on it Monday and said things were looking good so far. Around 6pm they said the new 4-pin crank hub was installed as well as the new genuine BMW Valve cover, new spark plugs, and new front drive belts.

Compression test went insanely well, 220-224psi on all 6 cylinders!! One of the strongest they’ve had in the shop which was very reassuring. Also under the valve cover everything looked as if it only had 15-20k miles on it, not 63k so again very reassuring and great news.

Picked up the car yesterday evening after work and drove it back 91 miles, feels amazing and is running top notch! Drove another 98 miles today and still perfect, I got very very lucky!

The diagnoses was in fact a slipped hub, it actually broke one of the friction disks and barely scored the shaft underneath the outer (oil pump) gear. I’m very glad it still held on enough to not slip any more where I wouldn’t have been as lucky. Still not sure what made it slip, I’ve never money shifted the car and the only rough transitions it’s had is a couple times the auto rev doesn’t kick in before I realize and already drop the clutch which kind of jolts the car a tad while slowing down. This has only happened maybe 3-4 times in 51k miles though only thing I can come up with for user error. It sucks too because you don’t expect it and get lazy with the rev match feature so it catches you off guard lol. However it’s nice knowing I have the security now and finally did the upgrade I always planned to do in the future. Talk about dodging a freaking bullet!…or should I say valve? Ha! Kidding

Anyway to leave off, the guys over at S5X are freaking awesome! Super easy to work with, great communication the entire time, very down to earth and respectable people. I’ll definitely take my car to them for any other big tasks I might want to do as I feel they did a great job and treated me like I’ve been a lifelong customer. Thanks guys!

[FastCoupe]

Originally Posted by devzw3

Update time!
I trailered the car out to S5X last Friday, went very well, the guys started working on it Monday and said things were looking good so far. Around 6pm they said the new 4-pin crank hub was installed as well as the new genuine BMW Valve cover, new spark plugs, and new front drive belts.

Compression test went insanely well, 220-224psi on all 6 cylinders!! One of the strongest they’ve had in the shop which was very reassuring. Also under the valve cover everything looked as if it only had 15-20k miles on it, not 63k so again very reassuring and great news.

Picked up the car yesterday evening after work and drove it back 91 miles, feels amazing and is running top notch! Drove another 98 miles today and still perfect, I got very very lucky!

The diagnoses was in fact a slipped hub, it actually broke one of the friction disks and barely scored the shaft underneath the outer (oil pump) gear. I’m very glad it still held on enough to not slip any more where I wouldn’t have been as lucky. Still not sure what made it slip, I’ve never money shifted the car and the only rough transitions it’s had is a couple times the auto rev doesn’t kick in before I realize and already drop the clutch which kind of jolts the car a tad while slowing down. This has only happened maybe 3-4 times in 51k miles though only thing I can come up with for user error. It sucks too because you don’t expect it and get lazy with the rev match feature so it catches you off guard lol. However it’s nice knowing I have the security now and finally did the upgrade I always planned to do in the future. Talk about dodging a freaking bullet!…or should I say valve? Ha! Kidding

Anyway to leave off, the guys over at S5X are freaking awesome! Super easy to work with, great communication the entire time, very down to earth and respectable people. I’ll definitely take my car to them for any other big tasks I might want to do as I feel they did a great job and treated me like I’ve been a lifelong customer. Thanks guys!

How much did you get charged