E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > E46 BMW > ///M3 Forum

///M3 Forum
The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today!

Reply
 
Thread Tools Search this Thread Rating: Thread Rating: 1 votes, 5.00 average. Display Modes
Old 07-07-2013, 08:53 AM   #1
Dan04E46
Registered User
 
Join Date: May 2006
Location: SE Corrupticut
Posts: 1,597
My Ride: '04 S54B32 Coupe
DIY: Reinforcing Swaybar Bushing Mounting Points

So the other day, I heard a loud knocking while I was turning. As it turned out, I had somehow managed to rip my swaybar mounting studs straight out of the body's sheet metal on the passenger side. Check out the following pics.

What should look like this...



... looked like this.



Now apparently, after doing some research on the topic, it's happened on other E46 M3s and a lot on autocrossed Z4s. Solutions included welding on a new body section which BMW actually sells or reinforce the area and weld in new studs. The latter sounded more appealing so I found some flat bar I had lying around and proceeded to make a template of the flat area and of the through holes for the studs. I made the cuts and did a fit up over the existing studs on the other side.





Perfect! So in my case, I welded the heads of a couple bolts to the top of the plate, then welded that assembly over the area of failure, and finally painted the area. As for the second plate I made, I just painted it then sandwiched it in between the swaybar bushing bracket and the body to reinforce the area. Hopefully that'll do the trick.



Its a schitty looking weld (it's actually my first structural weld ever) so I'm glad you can't see it too well in the pic. Anyways, this could happen to anyone just like every other failure with these cars (rear subframe mounting tears, VANOS woes, etc.). I saved the template and can reproduce these reinforcement plates fairly easily if anyone is interested in a set. They can be welded or just used as an in-between plate. Stock studs are still long enough for proper thread engagement. Boom.
__________________

DAN WAS HERE
2001 330Ci= Sold :(
2004 M3 coupe= Mine! :D

Last edited by Dan04E46; 07-07-2013 at 09:07 AM.
Dan04E46 is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 07-07-2013, 09:07 AM   #2
Matty47
Registered User
 
Join Date: Sep 2011
Location: Colorado springs
Posts: 5
My Ride: 02 M3
That's good to know! Thanks for the info.
Matty47 is offline   Reply With Quote
Old 07-07-2013, 09:30 AM   #3
Dan04E46
Registered User
 
Join Date: May 2006
Location: SE Corrupticut
Posts: 1,597
My Ride: '04 S54B32 Coupe
Additionally, I was running Hotchkis swaybar kit set to medium stiffness when the failure happened. And its been about a month or so (~1k miles) since I did the diy. So far, so good.
__________________

DAN WAS HERE
2001 330Ci= Sold :(
2004 M3 coupe= Mine! :D
Dan04E46 is offline   Reply With Quote
Old 07-07-2013, 09:35 AM   #4
wilsel
Registered User
 
Join Date: Dec 2010
Location: Fort Collins, CO.
Posts: 269
My Ride: 05 AW M3 ZCP
Quote:
Originally Posted by Dan04E46 View Post
Additionally, I was running Hotchkis swaybar kit set to medium stiffness when the failure happened. And its been about a month or so (~1k miles) since I did the diy. So far, so good.
Uh Oh.. I also have the hotchkis swaybar kit set to medium in the front. How long have you had the sways? Done any track days with it since adding the swaybars?
__________________
wilsel is offline   Reply With Quote
Old 07-07-2013, 09:46 AM   #5
Dan04E46
Registered User
 
Join Date: May 2006
Location: SE Corrupticut
Posts: 1,597
My Ride: '04 S54B32 Coupe
I had the swaybars on for over three years. Basically, from what I understand, the failure happens from years of torsion forces applied to the same area. Take for example a paperclip. You bend it once, no problem. But keep bending it on the same spot and it'll eventually break from being gradually weakened. Unfortunately the thickness of the sheet metal in the area has been compromised by design and engineering for cost. At least the failure happened with over 130k on the odo, so it did last quite a while before finally giving out.
__________________

DAN WAS HERE
2001 330Ci= Sold :(
2004 M3 coupe= Mine! :D

Last edited by Dan04E46; 07-07-2013 at 09:48 AM.
Dan04E46 is offline   Reply With Quote
Old 07-18-2013, 11:37 AM   #6
Dan04E46
Registered User
 
Join Date: May 2006
Location: SE Corrupticut
Posts: 1,597
My Ride: '04 S54B32 Coupe
So, is anybody interested in a these on the cheap if I made a couple sets?

Help support a fellow fanatic trying to help fellow fanatics!
__________________

DAN WAS HERE
2001 330Ci= Sold :(
2004 M3 coupe= Mine! :D

Last edited by Dan04E46; 07-18-2013 at 11:38 AM.
Dan04E46 is offline   Reply With Quote
Old 07-18-2013, 03:56 PM   #7
Moosecakes
Registered User
 
Join Date: Nov 2010
Location: Oregon
Posts: 836
My Ride: 02' SMG M3
I might be interested once I get some money together from my damn financial aid lol.. School is taking forever to finish my ****.. shoot me a pm for price
__________________
Moosecakes is offline   Reply With Quote
Old 08-02-2014, 04:50 PM   #8
DLag
Registered User
 
Join Date: Sep 2008
Location: NorCal
Posts: 22
My Ride: is slow.
Are you selling the plates? Mine just ripped out using the medium setting on hotchkis also
DLag is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Censor is ON





All times are GMT -5. The time now is 04:49 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
(c) 1999 - 2011 performanceIX Inc - privacy policy - terms of use