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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 10-20-2008, 09:15 PM   #21
TxTorqueMade
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Sounds like in reality most are moving away from the Powerflex phenom...huh?

My Indy said regarding the FCABs as well, they squeek. Thinking Ill go with Meyle HD all the way around and maybe some of those Motorsport control arms for 2k
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Old 05-26-2009, 06:11 AM   #22
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Was supposed to put in the M3 RTABs with Rogue Engineering shims today but ran out of time. Flexing both RTAB brackets with the original RTABs (half-casing) still felt very firm.

So I just installed the shims on the original RTABs just to check out the difference. What I noticed after installing the shims was that even with the RTAB bolt torqued to the spec 81 ft-lbs, with some force I could rotate the bracket around the RTAB unlike before. I noticed this while trying to do the 16mm bar (pre-loading) routine in the TIS and Bentley. So instead of the RTAB metal sleeve being fixed and unmovable relative to the bracket like before, the bracket and shims are now sliding/rotating against the RTAB rubber protrusions.

So basically it now acts like a bearing instead of a springy bushing. Is this the correct behavior for the shims or did I get ones that are a tad too thick and caused the bracket not to lock with the RTAB metal sleeve?
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Old 05-27-2009, 10:08 PM   #23
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^^The bushing can still rotate. The flex is gone with the limiters - that's what matters
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Old 07-13-2010, 08:04 PM   #24
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Great info! Thanks guys... I'll be referencing this with my purchase.
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Old 07-15-2010, 10:50 AM   #25
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Originally Posted by silentak1 View Post
Thanks for the suggestions. I placed my order with Ruben at DesertMotorWorks.

The Powerflex are just a tad too stiff for my daily drive (about 100-150 miles per day).
How can I contact ruben and how much did it cost? - I like your set up
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Old 09-29-2010, 08:15 AM   #26
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Originally Posted by ssm1991 View Post
Was supposed to put in the M3 RTABs with Rogue Engineering shims today but ran out of time. Flexing both RTAB brackets with the original RTABs (half-casing) still felt very firm.

So I just installed the shims on the original RTABs just to check out the difference. What I noticed after installing the shims was that even with the RTAB bolt torqued to the spec 81 ft-lbs, with some force I could rotate the bracket around the RTAB unlike before. I noticed this while trying to do the 16mm bar (pre-loading) routine in the TIS and Bentley. So instead of the RTAB metal sleeve being fixed and unmovable relative to the bracket like before, the bracket and shims are now sliding/rotating against the RTAB rubber protrusions.

So basically it now acts like a bearing instead of a springy bushing. Is this the correct behavior for the shims or did I get ones that are a tad too thick and caused the bracket not to lock with the RTAB metal sleeve?
The way the bushings are supposed to work is that the rubber is supposed to do all the flexign the metal inside and outside is supposed to remain stationary in resepect to the part they are bolted to. That way there is no wear on the metal parts
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Old 01-19-2013, 02:01 AM   #27
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Didn't mean to revive an old thread but which limiters are the favorite? Vorschlag? Turner? Others? And should I just match it with the OEM rtab's?
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Old 01-19-2013, 01:04 PM   #28
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Hello BMW Experts!
I had m3 RTABs + limiters, and they felt very good at first. Mine were totally shot at ~ 43k miles, though.
So I recently put in UUC red urethane RTABs, which have a 75A hardness rating, softer than the powerflex (85a & up) ones, etc. They also have big channels which should help hold extra grease, making the intervals between re-greaseing longer & lessening the noise potential (mine are silent).
Of course these things are hard to really compare, but I think they make the car more stable than the m3/limiter combo. They should last much longer without deteriorating (if greased properly initially) also. They might take some kinds of bumps a little harder, but generally they have no NHV drawbacks.
YMMV!

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Old 01-19-2013, 03:43 PM   #29
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i bought the powerflex polyurethane RTABS. love them
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Old 01-20-2013, 11:29 AM   #30
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Sakumaxp,
How long have you had them, & do you have noise?
Do you know the durometer # for the ones in your car?

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Old 01-20-2013, 11:49 AM   #31
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I have had them for a little under or just about a year, and no noise, and about the durometer # sorry I don't, I just told my shop what I wanted and they took care of the rest. Once you get them in you can feel a big diff, the rear will feel more planted to the ground
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