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Old 06-27-2023, 02:28 PM
Join Date: Apr 2019
Location: Boston, MA
Posts: 842
Effduration is on a distinguished road
Rustbelt - Subframe drop, Sway Bar R&R, Engine Mounts, rusted alignment pins

I haven't seen much written about this.

I wanted to replace my front sway bar because it had rusted underneath the bushings so much so, that the diameter of the sway bar had shrunk and new bushings did not fit. I ordered a used, rust-free sway bar from Texas.

According to Pelican you can slide it out the passenger side once you remove the bushings and guide links...This is WRONG...It can't be done without dropping the subframe.

I have never dropped the subframe on any BMW, so I was wiling to give it a try. I do have an engine support bar.

Problem is.. the subframe had rusted firmly to the two front alignment pins mounted on the underbody.

It took me a while to figure it out what was holding up my subframe with all 6 bolts outs and the steering rack unbolted, Then it took several hours of effort.

In the end it took heat from a mapp gas torch to heat up the subframe/pin connection, PB Blaster AND a dozen+ whacks on the subframe with a 5lb hammer on a 1/2 inch 3 foot long lead pipe from engine bay.

You also have to remember to keep the subrame level side to side, otherwise the subframe will bind on the alignment pins and won't release...

I couldn't believe how solidly it was rusted together.
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Last edited by Effduration; 06-28-2023 at 07:18 AM.
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Old 06-27-2023, 03:19 PM
andrewwynn's Avatar
Join Date: Jun 2015
Location: Racine, WI
Posts: 11,129
andrewwynn will become famous soon enough
Wow time-welded.
2011 E70 N55 (me)
2012 E70 N63 (wife)
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Old 06-27-2023, 04:14 PM
Join Date: Jun 2023
Location: Ua
Posts: 80
Lucas.ua is on a distinguished road
Hats off to you for not giving up!

I also don’t understand how that pelican parts e-manual can say that the sway bar will just slide out…. Even with mine it’s not possible and I’ve lowered the subframe a bunch!….
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