BMW M3 Forum
BMW M3 Forum BMW M3 Gallery BMW M3 Reviews BMW M3 Social Groups BMW M3 Chat M3Forum Sponsors >>
Loading


Mobile M3forum
Go Back   BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X) > BMW M3 Discussions > E36 M3 (1992-1999)
Tire Rack Buy Winter Tires Now!
Not a member? Register Now!
Register Gallery All Albums Garage Search Today's Posts Mark Forums Read Calendar FAQ

E36 M3 (1992-1999) {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999


Reply
 
Thread Tools Display Modes
Old Mon, Mar-20-2017, 04:26:20 PM   #11
tripitz
Registered User
 
Join Date: Nov 2015
Posts: 318
Reputation: 0 tripitz is on a distinguished road

United States




Default Re: Cracked Rear Shock Tower

The guy who welded in my RTAB pockets has done the shock tower repair before. It seems almost not much worse than grinding the whole area down.

Will a welded in AKG plate really be sufficient to fix this problem? This will be a track car. Will the plate interfere with other things like rogue shock mounts and/or a bar?

Last edited by tripitz; Mon, Mar-20-2017 at 04:32:14 PM.
Jump to top tripitz is offline   Reply With Quote
Sponsored Links
Register now and remove these ads
Old Mon, Mar-20-2017, 04:35:28 PM   #12
LockDots
Registered User
 
LockDots's Avatar
 
Join Date: Sep 2016
Posts: 224
Reputation: 0 LockDots has disabled reputation
Location: Bellmore

United States




Default Re: Cracked Rear Shock Tower

Quote:
Originally Posted by englishtom1596q View Post
it will absolutely not be cheaper to replace the shock tower. Also if you replace the tower you risk it not being aligned correctly and ruining the car forever. As said get in there with a angle grinder of dremel with a cutoff wheel. If you weld from the top it will be a lot easier to get to
I disagree somewhat. One would have to almost literally botch the job terribly or purposefully line it up badly in order for it to not be aligned properly.

If the broken shock tower is removed appropriately (seam sealer wire-wheeled off, seams cut through with a knife/blade, and the tack welds cut out using a tack weld cutting bit) the wheelhouse metal should end up fairly straight enough to literally sit the new tower into place and have it line itself up as you push up on it from underneath.

That being said, the AKG plate will definitely be cheaper than replacing the tower, but replacing the tower isn't necessarily significantly riskier. Besides, it's what the shock mounts to and is a part that swivels in and out at the base of the shock, not so much the top. It certainly shouldn't affect the alignment of the car and shouldn't affect the feel, so long as the repair is done properly, aka not-botched-up.
__________________
Jump to top LockDots is offline   Reply With Quote
Old Mon, Mar-20-2017, 05:42:43 PM   #13
tripitz
Registered User
 
Join Date: Nov 2015
Posts: 318
Reputation: 0 tripitz is on a distinguished road

United States




Default Re: Cracked Rear Shock Tower

Quote:
Originally Posted by LockDots View Post
I disagree somewhat. One would have to almost literally botch the job terribly or purposefully line it up badly in order for it to not be aligned properly.

If the broken shock tower is removed appropriately (seam sealer wire-wheeled off, seams cut through with a knife/blade, and the tack welds cut out using a tack weld cutting bit) the wheelhouse metal should end up fairly straight enough to literally sit the new tower into place and have it line itself up as you push up on it from underneath.

That being said, the AKG plate will definitely be cheaper than replacing the tower, but replacing the tower isn't necessarily significantly riskier. Besides, it's what the shock mounts to and is a part that swivels in and out at the base of the shock, not so much the top. It certainly shouldn't affect the alignment of the car and shouldn't affect the feel, so long as the repair is done properly, aka not-botched-up.
My welder has done the job for his track car, so I feel good about his capabilities. His recommendation was to check to see if there is a quicker/easier alternative given that my towers are mostly intact and the tears on one side are not all the way through. He did not like the idea of actually welding the cracks themselves given the need to have everything flat. He wants to tie the AKG plates into the good/strong materials away from where the cracks are.

It doesn't seem like there is a significant downside for going this approach. It is still going to be a lot of work. What is the impact on the shock mounts that I can use? I have the rogue ones for the rear..

Last edited by tripitz; Mon, Mar-20-2017 at 06:00:58 PM.
Jump to top tripitz is offline   Reply With Quote
Old Mon, Mar-20-2017, 06:01:18 PM   #14
tripitz
Registered User
 
Join Date: Nov 2015
Posts: 318
Reputation: 0 tripitz is on a distinguished road

United States




Default Re: Cracked Rear Shock Tower

Ordered AKG plates. Talked to them. Going to give this a try.
Jump to top tripitz is offline   Reply With Quote
Old Mon, Mar-20-2017, 07:35:28 PM   #15
Oogie_M
o_O
 
Oogie_M's Avatar
 
Join Date: Nov 2006
Posts: 364
Reputation: 0 Oogie_M is on a distinguished road
Location: Everywhere

Taiwan




Default Re: Cracked Rear Shock Tower

Quote:
Originally Posted by tripitz View Post
Ordered AKG plates. Talked to them. Going to give this a try.
This is how mine were installed. Original condition was a slight crack near the lip, welded up and the plate installed. Seam sealer and then painted later on.
Attached Images
File Type: jpg akg.jpg (106.4 KB, 38 views)
Jump to top Oogie_M is offline   Reply With Quote
Old Mon, Mar-20-2017, 08:43:29 PM   #16
tripitz
Registered User
 
Join Date: Nov 2015
Posts: 318
Reputation: 0 tripitz is on a distinguished road

United States




Default Re: Cracked Rear Shock Tower

Quote:
Originally Posted by Oogie_M View Post
This is how mine were installed. Original condition was a slight crack near the lip, welded up and the plate installed. Seam sealer and then painted later on.
That looks great. Not a ton of load in this area when using the stock suspension configuration so hopefully mine will work like this. It is also seems like an easy fix. Will start cleaning up the area tonight.
Jump to top tripitz is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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 Off

Forum Jump



All times are GMT. The time now is 05:41:17 AM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
M3Forum.com and M3forum.net is in no way sponsored, endorsed or affiliated by or with BMW NA / BMW AG or any of it's subsidiaries or vendors.
BMW and M3 (E90 M3 | E92 M3 | E93 M3 | E46 M3 | E36 M3 | E30 M3) are registered trademarks of BMW AG.
M3Forum Terms of Service
Copyright 1999-2017 M3Forum.com
Discussing Cracked Rear Shock Tower in the E36 M3 (1992-1999) Forum - {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999 at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)