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Go Back   E46Fanatics > Tuning & Tech > Suspension & Braking

Suspension & Braking
Have some questions about suspension or brake setups for your E46 BMW? Get all your answers here!

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Old 01-02-2014, 06:26 PM   #1
Jaredxxx24
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mason engineering 3 piece rear shock tower brace

I put new subframe bushings in my 323i a few months back, and had the turner kit welded in by a friend but unfortunately the welds on the driver side rear have come undone. I plan on taking my car to a shop to have the welds redone as I'm very paranoid about subframe damage. I've come across the mason engineering bar and I'm willing to give up part of my trunk if this really solves the issue of the rear floor failure. Has anyone installed this in their car? I want to be able to drive my car like its meant to be driven and not worry about ruining it.
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Old 01-02-2014, 11:19 PM   #2
nleksan
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Running all the Mason pieces in both my 328Ci and M3, ie F+R steel braces and trunk X-brace forsubframe.

I have always been very skeptical of strut braces because what's good in theory doesn't necessarily work out well in practice. Especially with the cheap, hinged, aluminum braces that have almost no impact on rigidity.

That said, I love these parts so much I bought them twice! Even with a beyond overkill reinforcement setup, and seam welding a fair amount of the chassis, the difference in stiffness was immediately apparent.

I would recommend getting some new subframe and diff bushings/mounts, and while I have never had a problem with Powerflex, I am enjoying the combination of AKG 75D and TMS semi-solid bushings and mounts (literally all of them). I have found that acceleration through corners, even with a bit more than 400rwhp/390rwtq, through an OS Giken LSD, is instantaneous in feedback and the setup allows for extremely fine grain control of corrections.

I haveeven notic ed improved tire wear patterns due to the car being able to much better maintain the dialed in camber settings (TMS Adj rear arms for -2.8 and Vorschlag Stg2 front plates for -3.3 degrees).

I would also recommend their clutch pedal, it's perfect for left foot braking.
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Old 01-02-2014, 11:34 PM   #3
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I hope this picture can attest to the fact that strut bars work.. at least the OE BMW one.



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Old 01-02-2014, 11:37 PM   #4
lszlszx
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The strut bar will make no difference in reinforcing the subframe.
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Old 01-03-2014, 12:02 AM   #5
Weste46
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Re: mason engineering 3 piece rear shock tower brace

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Originally Posted by lszlszx View Post
The strut bar will make no difference in reinforcing the subframe.
He means the Mason bar that can be connected to the subframe via their reinforcement kit. The bar on it's own would not help, you're right.
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Old 01-03-2014, 04:48 AM   #6
MercForHire
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323i is worth about 2k now.
Not sure if a $1500 subframe reinforcent job is worth it.

Drive it until it cracks. Then part the damn car out.
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Old 01-03-2014, 12:23 PM   #7
Cavi Mike
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This is the one that supports the subframe. I had no idea someone made this. I was gonna waste a lot of time trying to engineer and build my own but screw that - I'm just gonna buy one of these.



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Old 01-03-2014, 11:40 PM   #8
nleksan
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The top one is what I have. Pure awesome sauce.
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Old 01-03-2014, 11:49 PM   #9
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Say good bye to rear fold seats and trunk space. Not to mention an awful looking hack job.

If this is what we have to do to keep an e46 running then it's best to send it straight to the junkyard.
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Old 01-04-2014, 12:02 AM   #10
Rob43
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This one.

It doesn't impede truck storage or seat folding, yet Completely supports the subframe & ties the two rear shock towers together. Once you reinstall the carpet, everything looks good.
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Old 01-04-2014, 12:29 AM   #11
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Say good bye to rear fold seats and trunk space. Not to mention an awful looking hack job.

If this is what we have to do to keep an e46 running then it's best to send it straight to the junkyard.
wait wait. you call the mason bar a hack job?


the mason bar is one of the coolest looking pieces made for our car, that actually serves a purpose. Who cares about fold down rear seats. I never use mine anyway.

Once I can, ill be replacing my racing dynamics bar with the Full Mason rear kit; strut bar, subframe brace, and x-brace.
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Old 01-04-2014, 02:42 AM   #12
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This one.

It doesn't impede truck storage or seat folding, yet Completely supports the subframe & ties the two rear shock towers together. Once you reinstall the carpet, everything looks good.
Are there any instructions / measurements / metal specs on this mod?
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Old 01-04-2014, 01:27 PM   #13
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Are there any instructions / measurements / metal specs on this mod?
No, not really. It's completely custom work.

I'll get back to you on this in about 4 to 6 weeks.


EDIT: http://forum.e46fanatics.com/showpos...5&postcount=24
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Last edited by Rob43; 01-04-2014 at 01:34 PM.
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