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Suspension & Braking Forum by BimmerWorld
Have some questions about suspension or brake setups for your E46 BMW? Get all your answers here!
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Old 09-10-2014, 06:40 PM   #1
jpjohnston
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Strut braces

'04 E46 320d msport

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Old 09-10-2014, 06:53 PM   #2
alexisthemovie
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'04 E46 320d msport

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Thread of the year, 2014.
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Old 09-10-2014, 07:08 PM   #3
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I was supposed to ask for advice but clearly made a mistake. New to this; sorry!

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Old 09-10-2014, 07:26 PM   #4
Rob43
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'04 E46 320d msport

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The first problem is that your E46 320d is rare to nonexistent here in the U.S. So sometimes we U.S based forum guys simply don't know the answer.

I run an inexpensive aluminum strut tower bar that I bought from Cosmo Racing for about $165 shipped. The interesting thing is that Cosmo Racing lists your 320 in the fitment application.

http://www.cosmoracing.com/productin...d=241&pid=2049



Good luck,
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Old 09-10-2014, 07:29 PM   #5
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Sweet rob... Do you find there's less roll when cornering hard.

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Old 09-10-2014, 07:37 PM   #6
Rob43
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Yes,.....but this is one of those 2% items. Meaning it certainly works, but you really need to be on the race track or driving very hard (IMO) to appreciate the difference.


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"Chance Favors The Prepared Mind"

Need Help With Your Nitrous Ambitions ?.....PM ME
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Nitrous is a little trickier than boost, but it's not the spray that kills motors, it's STUPIDITY!!
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Old 09-10-2014, 07:49 PM   #7
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You need to come to Ireland bud! One big race track. Lol. Especially north of Ireland. Roads are used for rallys, motorbike racing... Real message!

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Old 09-11-2014, 09:21 AM   #8
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Honestly, I have tried a fair few braces in my "chassis/suspension pt2" modding phase (the truly random odds and ends, and things that are dependent on other mods to show a difference; this is one of the last things I tackle, while the suspension/brakes/wheels+tires/drivetrain mounts are immediately overhauled and nothing is touched til their completion), and this is what I have learned...

- Does the Brace have hinges or heim joints?
JUNK

- Is it made of anything besides dry carbon fiber (ideal but never seen a truly good design) or top qualitysstainless steel/Ti/Magnesium?
JUNK

- Does it have only the single bar?
JUNK


The only "popular brand" Brace that I would endorse is the Rogue Engineering Racebrace, it gets most everything right and is a far cry from the usual zero-function engine dress up bars.

However, if you want to actually get something worthwhile for your money, that benefits much more than just turn-in response...
MASON ENGINEERING Front, and the FULL Rear with Subframe and Diff Mounts, are true chassis braces that make an incredible amount ofdifference for bbeing something other than a cage. Also, while I have all my cars' subframes welded (TMS full chassis reinforcement kits + a dozen custom reinforcement panels), the design of the rear Brace WITH the full set of cross braces should significantly reduce the stresses on the area of the subframe that tore in my 328Ci.

Carbon Fiber CSL Roof + Mason Engineering full rear Brace and front tie bar, and the chassis of both non-M and M3 coupes are improved significantly, enough that I feel it on public roads rather than the previous attempts which were barely felt unless wwatching for them on track.
I am currently working with a few friends in trying to figure out how best (if possible) to construct a lower chassis brace, basically a supercharged version of the X-brace using Chromoly steel tube and without having to crush any spots. I helped one friend make one for his Miata club racer (Flyin Miata Custom Turbo and built motor making some 355rwhp/285rwtq, and lighter than the Exige S 260 I had at thetime with the CF hardtop and roll "cage" in), and while it started out based on the FM design it ended up working even better whilewweighing about half; the car simply felt absolutely nothing like a convertible, and the huge increase in chassis stiffness reduced tire wear, increased bushings lifespan, and allowed for a far better suspension setup (I believe he was using Moton 3-ays at the time? He's since switched to JRZ after riding in my M3 w them) that's much better suited to the amount of rubber stuffed beneath that tiny car (flares and upgraded axles = 17x9 245's and 17x10.5 275's).

AAnyway, go with Mason Engineering, or spend the money on something else entirely.
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Old 09-11-2014, 10:30 AM   #9
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Ibid (as above).

I also like my "Strong Strut"

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Old 09-11-2014, 03:03 PM   #10
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OP,

Here you go:

http://forum.e46fanatics.com/showthread.php?t=1050961



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Rob #43 ITS/ITR/STU, BMW 325I, STU LAP RECORD
SUMMIT POINT WV 1:24:229 S.C.C.A.
(DynoDynamics https:vimeo.com/8486878 Dyno Video)
"Chance Favors The Prepared Mind"

Need Help With Your Nitrous Ambitions ?.....PM ME
Quote:
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Nitrous is a little trickier than boost, but it's not the spray that kills motors, it's STUPIDITY!!
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Old 09-16-2014, 05:05 PM   #11
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A strut brace will help your car's suspension work a bit more efficiently as well as give you a bit of rigidity during transitions. (a side effect of the first part)

If you want gains, first start off with a good base. That means maintaining and replacing your suspension and using good tires and wheels.
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Old 10-22-2014, 08:15 AM   #12
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Dinan is having a sale, with free shipping.. $211 for their strut brace.
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