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      07-23-2020, 06:18 PM   #177
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I read this thread a year ago but just came back and read the whole thing again. Love this build! I really appreciate your methodical approach to maximizing the e91 chassis.

You mentioned the diff cooler a few times but I didn’t see any pics of the install. Did I miss them? The only other n52 e9x I remember seeing with a diff cooler was Justpete’s track build.
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      07-24-2020, 08:25 PM   #178
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Very nice hard to find a stick in those around here.
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      08-21-2020, 12:53 PM   #179
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Quote:
Originally Posted by Biginboca View Post
I read this thread a year ago but just came back and read the whole thing again. Love this build! I really appreciate your methodical approach to maximizing the e91 chassis.

You mentioned the diff cooler a few times but I didn’t see any pics of the install. Did I miss them? The only other n52 e9x I remember seeing with a diff cooler was Justpete’s track build.
Sorry for the delay, Biginboca. Between bikes and work, my discretionary time is approaching zero. Haven't been tracking the thread.

Thanks for your comment. Funny, I've been following your build for the same reasons!

This is my plan for the diff cooler. This is a WTCC BMW, but the concept remains valid, IMO. You can see the location of the differential heat exchanger in the fairing behind the right rear wheel arch. You can also glimpse the bungs and lines on the diff cover, leading to the cooler. I prefer this to some of the in-cabin or in trunk installs in the unlikely case of a leak, the hot oil stays outside the cabin.
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2011 6MT RWD ClubSport Wagon | 3,185lbs | 1 of 149 ZSPs delivered in North America
Outside: BMW M-Aero, Euro region lighting, Seibon | Inside: M3 cockpit, Recaro SPG, Prototipo, AutoSolutions SSK, UCP | Stop: M3 ST-40R, PFC | Grip: Solid-mounted subframes, rear coilover conversion, M3 Nitron R3, Hyperco, SPL, AKG, ARC8 | Go: StageFP, CF snorkel, 3IM, MILVs, SuperSprint headers, Dundon Motorsports Inconel exhaust, VoltPhreaks | Cool: CSF | PCA #2018100384 | BMW CCA #505794
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      08-21-2020, 05:13 PM   #180
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Two toys, both black, both fun to pilot.

One's quick enough. The other one is... over the top & mildly excessive.

Summer in Seattle is near perfect, almost like Hawaii. 70 degrees and cloudless skies most days. It's surreal riding the S4R downtown with almost no traffic, a welcome second-order effect of COVID-19.

The wagon is leading a life of leisure, rarely out of the garage other than weekend road trips. We drove to the Tokeland Hotel last weekend. Yes, that's the real name. They claim to be the oldest hotel in the state of WA. Robert Plant of Led Zeppelin supposedly made a visit, motivated by the name. The town and lodge are actually named after the local indigenous leader, Chief Toke. From Seattle go south on I-5 and then west on SR6 through Pe Ell. The drive is scenic and serpentine.

Just passed the three year anniversary of ownership, the car is 10 years old, and is still south of 56k miles. Lot's of parts waiting for love and attention. I think it won't be before autumn when I can get to them.

Tokeland Hotel

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2011 6MT RWD ClubSport Wagon | 3,185lbs | 1 of 149 ZSPs delivered in North America
Outside: BMW M-Aero, Euro region lighting, Seibon | Inside: M3 cockpit, Recaro SPG, Prototipo, AutoSolutions SSK, UCP | Stop: M3 ST-40R, PFC | Grip: Solid-mounted subframes, rear coilover conversion, M3 Nitron R3, Hyperco, SPL, AKG, ARC8 | Go: StageFP, CF snorkel, 3IM, MILVs, SuperSprint headers, Dundon Motorsports Inconel exhaust, VoltPhreaks | Cool: CSF | PCA #2018100384 | BMW CCA #505794
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      08-22-2020, 12:54 PM   #181
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Chief Toke? Of the Hashish tribe?

I kid. Nice Duc. Looks kinda old school, but still modern.

My Uncle had a great big Aprilia 1000cc for the longest time that looked like the definition of excessive lol. I've always appreciated something about the Italian motorcycles..
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      09-26-2020, 12:50 AM   #182
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Quote:
Originally Posted by tetsuo111 View Post
Sorry for the delay, Biginboca. Between bikes and work, my discretionary time is approaching zero. Haven't been tracking the thread.

Thanks for your comment. Funny, I've been following your build for the same reasons!

This is my plan for the diff cooler. This is a WTCC BMW, but the concept remains valid, IMO. You can see the location of the differential heat exchanger in the fairing behind the right rear wheel arch. You can also glimpse the bungs and lines on the diff cover, leading to the cooler. I prefer this to some of the in-cabin or in trunk installs in the unlikely case of a leak, the hot oil stays outside the cabin.
That spindle, is well... it's gorgeous.
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      09-28-2020, 12:58 PM   #183
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Originally Posted by tetsuo111 View Post
RSBs: Turner in this car, MRF in the last one (BTY, MRF is a real pleasure to work with).

Billet / solid AL rear subframe bushings are mandatory in my experience, based on two cars. They add no NVH whatsoever, and significantly tighten up control. Do the rear sway bar while the subframe is down, so you won't need to do the job twice.

Diff bushings: Turner Delrin in this car, Turner AL in the last car.

The billet AL diff bushings in the last car tighten up the drivetrain, but do add noise, transmitted from the diff pumpkin to the rear subframe and into the car. The noise sounds "turbine-like".

The Delrin bushings in this car also tighten up the drivetrain about equal to the AL bushings, with a bit less turbine-rush.

The difference is not dramatic, but is enough such that I personally prefer the Delrin. This is subjective and there will be as many who prefer the solid AL versions.
Thanks for this!

Went with MRF and you are right, He was awesome to work with. Did his RSB and Condor Speed Shop Diff bushings. I do get some diff whine and Lot of cowbell (Christopher Walken would be pleased) and backlash clunking.. Going to have the center carrier bearing replaced and will hopefully resolve the cowbell noise. I also get some bearing noise that sounds like a bad wheel bearing. Had the wheel bearings looked at and they said they were ok so I am hoping its not the Diff's pinion bearings that have gone bad (MFactory LSD) The noise starts as soon as the car starts moving and increases with speed. It gets slightly less noticeable at highway speed and more noticeable as you slow down.

Anyways, Love the build!
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      10-08-2020, 08:23 PM   #184
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That spindle, is well... it's gorgeous.
Yes - sadly there isn't much in common between the spindle, the rest of those sexy Motorsport parts, and our cars.

The attention to detail is impressive. Looks to be a Kevlar composite fuel cell, too. Pretty fun stuff.
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2011 6MT RWD ClubSport Wagon | 3,185lbs | 1 of 149 ZSPs delivered in North America
Outside: BMW M-Aero, Euro region lighting, Seibon | Inside: M3 cockpit, Recaro SPG, Prototipo, AutoSolutions SSK, UCP | Stop: M3 ST-40R, PFC | Grip: Solid-mounted subframes, rear coilover conversion, M3 Nitron R3, Hyperco, SPL, AKG, ARC8 | Go: StageFP, CF snorkel, 3IM, MILVs, SuperSprint headers, Dundon Motorsports Inconel exhaust, VoltPhreaks | Cool: CSF | PCA #2018100384 | BMW CCA #505794
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      01-11-2021, 06:06 PM   #185
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Fat and Ugly

https://www.bmwblog.com/2021/01/11/g82-bmw-m4-heavier/

According to BMW Blog, the G82 M4 as commonly spec'd will weigh around 4,000 lbs.

While aesthetics are subjective, there's near unanimous agreement that these cars are hideously ugly. And now, we learn how ungainly fat they are, too.

I'm of the opinion that large organizations, even global entities like BMW, are ultimately a projection of the leadership. It's impossible for the same team responsible for legends like the 3.0 CSi, E30 M3, E46 M3 could be in any way remotely connected to a monstrous appliance like the G-series. It would be fascinating to have a crystal ball and see how history judges these.

The sole connecting thread to BMW heritage seems to be the name and the badge. Really nothing interesting to see coming out of Munich...
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Outside: BMW M-Aero, Euro region lighting, Seibon | Inside: M3 cockpit, Recaro SPG, Prototipo, AutoSolutions SSK, UCP | Stop: M3 ST-40R, PFC | Grip: Solid-mounted subframes, rear coilover conversion, M3 Nitron R3, Hyperco, SPL, AKG, ARC8 | Go: StageFP, CF snorkel, 3IM, MILVs, SuperSprint headers, Dundon Motorsports Inconel exhaust, VoltPhreaks | Cool: CSF | PCA #2018100384 | BMW CCA #505794
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      01-17-2021, 07:24 PM   #186
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Ice Cold Dead

Not long ago I started the car and immediately noticed peculiar behavior. The idle was variable, rising and falling erratically, and all dash lights were on full display. Being stubborn, I started driving anyway but changed my mind less than a quarter mile from home, turned around, parked in the garage, and de-energized the car.

The car went dark. The key fob couldn't be removed from the dash. No windows, lights, radio, HVAC, nothing. Zilch. Zip. Stone cold dead. Glad I returned home...

Time for some Internet research. Long story short, my car fell victim to a problem identified in a prior recall, BMW 13V044, B+ power supply cable into the power distribution / fuse box located behind the glove compartment. My car had the recall performed in 2013, but at the time the B+ junction design hadn't been updated, so the parts were simply replaced with the same faulty design.

If this happens to you, remove the glove box to gain access to the power distribution panel. Next, remove the panel. This is easier said than done because the blower fan blocks access to the upper left screw. Try a universal adapter here. Wiggle the B+ cable and power will return.

While power is restored, I think I'll replace both the panel and B+ cable with new parts for a more confidence inspiring repair.

Hope this helps someone in the future.
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2011 6MT RWD ClubSport Wagon | 3,185lbs | 1 of 149 ZSPs delivered in North America
Outside: BMW M-Aero, Euro region lighting, Seibon | Inside: M3 cockpit, Recaro SPG, Prototipo, AutoSolutions SSK, UCP | Stop: M3 ST-40R, PFC | Grip: Solid-mounted subframes, rear coilover conversion, M3 Nitron R3, Hyperco, SPL, AKG, ARC8 | Go: StageFP, CF snorkel, 3IM, MILVs, SuperSprint headers, Dundon Motorsports Inconel exhaust, VoltPhreaks | Cool: CSF | PCA #2018100384 | BMW CCA #505794
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      01-17-2021, 07:31 PM   #187
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DTC 2C3D - O2 sensor Bank 1 Sensor 1

SES has been lit for a couple of months but the car seemed to be operating fine. The code is 2C3D, O2 sensor bank1 sensor 1.

I dreaded the prospect of replacing the sensor due to challenging access. I decided to instead treat the connection using Deoxit first, before diving in.

Viola!

SES is gone. Drove for several miles without the code returning. Problem resolved. These cars are rolling computer networks. Treating electrical connections with a high quality cleaner can only help. It worked in this case.

It's weight off the shoulders running the car with no SES. Hope this helps someone down the line.
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2011 6MT RWD ClubSport Wagon | 3,185lbs | 1 of 149 ZSPs delivered in North America
Outside: BMW M-Aero, Euro region lighting, Seibon | Inside: M3 cockpit, Recaro SPG, Prototipo, AutoSolutions SSK, UCP | Stop: M3 ST-40R, PFC | Grip: Solid-mounted subframes, rear coilover conversion, M3 Nitron R3, Hyperco, SPL, AKG, ARC8 | Go: StageFP, CF snorkel, 3IM, MILVs, SuperSprint headers, Dundon Motorsports Inconel exhaust, VoltPhreaks | Cool: CSF | PCA #2018100384 | BMW CCA #505794
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      02-13-2021, 03:04 PM   #188
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What Happened to BMW?

So, I'm of the opinion that BMW is like Cadillac used to be in the 70s and 80s. Ironically, Cadillac is the BMW of the '20s! Why?

In the 70s and 80s, BMWs were driven almost exclusively by driving enthusiasts. How do I know? Well, unless one was a car or driving enthusiast, people were simply unaware of the BMW marque. Most hadn't heard of the brand. If you drove one, you had to explain to others why you chose a small sedan over familiar, larger, Detroit iron. BMW drivers even waived to each other from a sense of unity and common purpose.

Time takes its toll.

At some point, maybe 15-20 years ago, BMW became more of a "prestige" symbol rather than a "performance" brand, coveted for the blue badge by buyers interested in social status. Today, BMW as a brand seems to be targeting an audience who wants to look "awesome" at the shopping mall, or needs "M" badges to dominate the competition.

I could go on about why the marque has become ordinary, at least in my mind. Anything other than remarkable. Instead, listen to Doug Demuro, who finds dark humor in just how effectively BMW management has destroyed the brand's equity and value. Sure, sales numbers are ok, but who really want to drive a 2 ton, 600 hp brick, that also happens to look like a beaver?

Can't wait for my next cars: a Caddy and a Vette.

Caddy doesn't have the sales numbers of BMW, but it's crystal-clear Caddy is building cars for drivers. Enough power, naturally aspirated motors, manual transmissions, and handling sharp enough for the track are attributes of today's Cadillac. Caddy has no social prestige value, like BMW in the 70s-80s. You just drive one if you're in the know, and enjoy the driving experience. The C8 Corvette needs no introduction. It's simply the most interesting performance car in a decade.

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2011 6MT RWD ClubSport Wagon | 3,185lbs | 1 of 149 ZSPs delivered in North America
Outside: BMW M-Aero, Euro region lighting, Seibon | Inside: M3 cockpit, Recaro SPG, Prototipo, AutoSolutions SSK, UCP | Stop: M3 ST-40R, PFC | Grip: Solid-mounted subframes, rear coilover conversion, M3 Nitron R3, Hyperco, SPL, AKG, ARC8 | Go: StageFP, CF snorkel, 3IM, MILVs, SuperSprint headers, Dundon Motorsports Inconel exhaust, VoltPhreaks | Cool: CSF | PCA #2018100384 | BMW CCA #505794

Last edited by tetsuo111; 02-13-2021 at 05:44 PM..
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      02-13-2021, 05:02 PM   #189
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Your alive! What’s the latest with your car? Updates!!!
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      02-13-2021, 05:30 PM   #190
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Hey Al!

Sorry I've been dark. Crazy busy with work. And my car went cold. Again. Same issue. No power whatsoever on the car. The repair a couple of weeks ago was fleeting.

I removed the power distribution box and B+ supply line, fully expecting to see evidence of a short, like so many other have reported. Instead, the connection appears clean. Still, I'll swap the old power distribution unit for the new one to confirm this isn't the cause of the fault. I think the next step is a new JBE. I can't even run diagnostics, because no power to the OBD2 port.

Common Fibers, the shop fabricating the cf roof, is in process of moving locations from Georgetown to Kent. My project is front of the queue, but I can't see anything moving forward before the move is complete and the new facility is online.

TL;DR: I'm living vicariously through your build....

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Originally Posted by Biginboca View Post
Your alive! What’s the latest with your car? Updates!!!
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2011 6MT RWD ClubSport Wagon | 3,185lbs | 1 of 149 ZSPs delivered in North America
Outside: BMW M-Aero, Euro region lighting, Seibon | Inside: M3 cockpit, Recaro SPG, Prototipo, AutoSolutions SSK, UCP | Stop: M3 ST-40R, PFC | Grip: Solid-mounted subframes, rear coilover conversion, M3 Nitron R3, Hyperco, SPL, AKG, ARC8 | Go: StageFP, CF snorkel, 3IM, MILVs, SuperSprint headers, Dundon Motorsports Inconel exhaust, VoltPhreaks | Cool: CSF | PCA #2018100384 | BMW CCA #505794
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      02-13-2021, 05:49 PM   #191
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Aww man, so bummed to hear you still fighting these electrical gremlins. I’m sure that’s super frustrating!

As long as I have your attention, quick question. You show your running a M3 rear spindle and hub. Did you have to modify the rear 328i axle shafts or do they fit the M3 hubs no problems? (I assume you are not running M3 axle shafts.)
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      02-14-2021, 12:47 PM   #192
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Quote:
Originally Posted by Biginboca View Post
Aww man, so bummed to hear you still fighting these electrical gremlins. I’m sure that’s super frustrating!

As long as I have your attention, quick question. You show your running a M3 rear spindle and hub. Did you have to modify the rear 328i axle shafts or do they fit the M3 hubs no problems? (I assume you are not running M3 axle shafts.)
Per RealOEM:

1. The bearing, labeled #2, is the same part across all 3-series chassis, including the M3. The 328i axle shafts fit these hubs PnP, just as the diagram illustrates.

2. The hub, labeled #1, is unique to E90 and E91. Furthermore, the part applies only to non-M platforms. The M3 hub differs from the non-M part. If you choose to use M3 brake rotors, then it requires the M3 hub or else significant modification to the M3 rotor. This is due to the positioning holes on the hub face and rotor disc.

3. On my car, I use the universal bearing (part #2) and the M3-specific hub, together with M3 spec brakes and M3 spec dampers. This setup requires no modification of parts to fit on the non-M E91 platform.

4. Given the above, to my eye, the rear offset / wheel placement appears mildly "inboard". In other words, visually it looks like the rims could use a lower offset spec, or perhaps the M3 drive axles or M3 LSD differ from the non-M such that the end result of my configuration is mildly inboard rear wheel sets.

5. I'm addressing the inboard appearance by adding 5mm spacers.

6. There might be a better way to do this, but I haven't figured it out, and I doubt I'll apply more cycles to this project. Getting PnP within 5mm of the correct offset is good enough in my way of thinking, rightly or wrongly. On the plus side, everything on the rear is OEM PnP. Everything is OEM or OEM+ M3 suspension and brakes.

7. In summary, my sole unknown is the rear track width. This bothers me. A lot. If there was an easy way to accurately measure rear track width, I would do so. Instead I'm left with going by "appearance", and that isn't my preferred method of working the problem. At the end of the day however, I'm satisfied with the result. I'm coping with rear offset using reasonable spacers, and everything else is OEM PnP M3.

I hope this helps a little, Al. Ping me again and I'll do better at replying. Have just been focused on work. Cheers!
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2011 6MT RWD ClubSport Wagon | 3,185lbs | 1 of 149 ZSPs delivered in North America
Outside: BMW M-Aero, Euro region lighting, Seibon | Inside: M3 cockpit, Recaro SPG, Prototipo, AutoSolutions SSK, UCP | Stop: M3 ST-40R, PFC | Grip: Solid-mounted subframes, rear coilover conversion, M3 Nitron R3, Hyperco, SPL, AKG, ARC8 | Go: StageFP, CF snorkel, 3IM, MILVs, SuperSprint headers, Dundon Motorsports Inconel exhaust, VoltPhreaks | Cool: CSF | PCA #2018100384 | BMW CCA #505794

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      02-14-2021, 03:18 PM   #193
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Quote:
Originally Posted by Biginboca View Post
Aww man, so bummed to hear you still fighting these electrical gremlins. I’m sure that’s super frustrating!

As long as I have your attention, quick question. You show your running a M3 rear spindle and hub. Did you have to modify the rear 328i axle shafts or do they fit the M3 hubs no problems? (I assume you are not running M3 axle shafts.)
Biginboca

As an E91 owner, I haven't surfed the E92 parts on RealOEM. After learning that the bearing and hubs have different parts numbers, I looked further...

1. Interesting (to me) that unlike the E90 / E91 bearings, the E92 / E93 bearings have different part numbers than the M3. Surprising, isn't it?

2. The 328i bearing part number also doesn't apply to the 335i E92 platform. Again, this differs from the E90 platform, which directly translates to the M3 and 335i.

3. The hub (part #1) is similar to the bearing in that it only seems to apply to the 328i, NOT the 335i NOR the M3.

In summary, the E92 328i hub and bearing seem to be unique to the 328i and lower powered motors. Unlike the E90 parts, which seem to be common with the 335i and M3. I don't know what to conclude from this, other than it isn't what I would expect...
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2011 6MT RWD ClubSport Wagon | 3,185lbs | 1 of 149 ZSPs delivered in North America
Outside: BMW M-Aero, Euro region lighting, Seibon | Inside: M3 cockpit, Recaro SPG, Prototipo, AutoSolutions SSK, UCP | Stop: M3 ST-40R, PFC | Grip: Solid-mounted subframes, rear coilover conversion, M3 Nitron R3, Hyperco, SPL, AKG, ARC8 | Go: StageFP, CF snorkel, 3IM, MILVs, SuperSprint headers, Dundon Motorsports Inconel exhaust, VoltPhreaks | Cool: CSF | PCA #2018100384 | BMW CCA #505794
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      02-14-2021, 03:37 PM   #194
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Quote:
Originally Posted by tetsuo111 View Post
Biginboca

As an E91 owner, I haven't surfed the E92 parts on RealOEM. After learning that the bearing and hubs have different parts numbers, I looked further...

1. Interesting (to me) that unlike the E90 / E91 bearings, the E92 / E93 bearings have different part numbers than the M3. Surprising, isn't it?

2. The 328i bearing part number also doesn't apply to the 335i E92 platform. Again, this differs from the E90 platform, which directly translates to the M3 and 335i.

3. The hub (part #1) is similar to the bearing in that it only seems to apply to the 328i, NOT the 335i NOR the M3.

In summary, the E92 328i hub and bearing seem to be unique to the 328i and lower powered motors. Unlike the E90 parts, which seem to be common with the 335i and M3. I don't know what to conclude from this, other than it isn't what I would expect...
See that’s what I found on my searching also, lots of confusing part variations. The reason I’m asking is I actually wanted to swap to the M4 rear hubs to match my new M4 front hubs. I was going over part numbers and trying to figure out what parts are compatible to what others. If the e92M3 rear hub splines fit the 328i axle shaft splines then I should be able to just swap to the M4 hub.

So really what I’m after is finding out if all the axles are splined the same at the hub. If so then I could just swap the m4 rear hub onto my car and be done with it. I don’t want to get too involved with this project just wanted to get the m4 hubs lol
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      03-17-2021, 06:49 PM   #195
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RIP Sabine

Respect and condolences for one of the greats, Sabine Schmitz. She inspired and touched many with her talent and fun spirit.

She'll be missed.

Sabine Schmitz tribute and obituary

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2011 6MT RWD ClubSport Wagon | 3,185lbs | 1 of 149 ZSPs delivered in North America
Outside: BMW M-Aero, Euro region lighting, Seibon | Inside: M3 cockpit, Recaro SPG, Prototipo, AutoSolutions SSK, UCP | Stop: M3 ST-40R, PFC | Grip: Solid-mounted subframes, rear coilover conversion, M3 Nitron R3, Hyperco, SPL, AKG, ARC8 | Go: StageFP, CF snorkel, 3IM, MILVs, SuperSprint headers, Dundon Motorsports Inconel exhaust, VoltPhreaks | Cool: CSF | PCA #2018100384 | BMW CCA #505794

Last edited by tetsuo111; 03-17-2021 at 07:23 PM..
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      04-28-2021, 07:49 PM   #196
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New hood

The irony isn't lost...

While my ride is idle at the moment, a CF hood arrived and I had no place to store it, so on the car it went. The non-M 300N force gas struts were replaced with 220N M3 gas struts. I tried living with no struts and a stick to prop the hood, at first. I definitely prefer using the gas struts. I still need to install Quik-Latch 2.5" lockable pins and have the hood painted.

For those with CF hoods, what are you using as an under-hood heat shield? OEM pad? Therma-tec (or similar) reflective foil? Thanks
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2011 6MT RWD ClubSport Wagon | 3,185lbs | 1 of 149 ZSPs delivered in North America
Outside: BMW M-Aero, Euro region lighting, Seibon | Inside: M3 cockpit, Recaro SPG, Prototipo, AutoSolutions SSK, UCP | Stop: M3 ST-40R, PFC | Grip: Solid-mounted subframes, rear coilover conversion, M3 Nitron R3, Hyperco, SPL, AKG, ARC8 | Go: StageFP, CF snorkel, 3IM, MILVs, SuperSprint headers, Dundon Motorsports Inconel exhaust, VoltPhreaks | Cool: CSF | PCA #2018100384 | BMW CCA #505794

Last edited by tetsuo111; 04-29-2021 at 12:29 PM..
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      04-29-2021, 12:17 AM   #197
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The new hood should help a bit with your weight loss program...
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      04-29-2021, 08:32 AM   #198
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And beats doing situps...
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