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    #31
    Originally posted by gashby View Post
    Has anyone gone poly diff bushings and gone back to oem?
    Seems like everyone here who did poly bushings in the diff has gone back to OEM (myself included).
    2002 Topasblau M3 - Coupe - 6MT - Karbonius CSL Airbox - MSS54HP Conversion - Kassel MAP - SSV1 - HJS - PCS Tune - Beisan - MK60 Swap - ZCP Rack - Nogaros - AutoSolutions - 996 Brembos - Slon - CMP - VinceBar - Koni - Eibach - BlueBus - Journal

    2012 Alpinweiss 128i - Coupe - 6AT - Slicktop - Manual Seats - Daily - Journal

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      #32
      I am looking at powerflex bushings right now for the rear diff. this is an HPF car and I figured the Poly bushings would be stronger then the OEM, and about half the cost. This thread is making me think differently. Has anyone ever posted a before and after video?

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        #33
        Originally posted by heinzboehmer View Post

        Seems like everyone here who did poly bushings in the diff has gone back to OEM (myself included).
        I have the AKG 95A and there is definitely a hum at higher speeds...not a fan of that. I think everything else is OE in terms of bushings except trans mount which probably isn't helping either...I too plan to go back to OE when I get a new diff and refresh cv boots
        /// 2004 SG/IR - Build Thread

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          #34
          Once I added more sound deadening (light weight closed cell foam) under the rear bench, and knocked down the majority of the whine, I've been very happy with AKG 95a poly for diff. It gives a much crisper power transfer, thought hat's coming from older, 140k miles stock (foam) bushings so I'm not sure if fresh oe foam bushings would be much better or not.
          DD: /// 2011.5 Jerez/bamboo E90 M3 · DCT · Slicktop · Instagram
          /// 2004 Silvergrey M3 · Coupe · 6spd · Slicktop · zero options
          More info: https://nam3forum.com/forums/forum/m...os-supersprint

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            #35
            I find this at front diff bushing location. Early MY? Lots of rubber, but I also had e36 style rubber bushings in thr cover




            Sent from my iPhone using Tapatalk

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              #36
              Originally posted by fattycharged View Post
              I find this at front diff bushing location. Early MY? Lots of rubber, but I also had e36 style rubber bushings in thr cover




              Sent from my iPhone using Tapatalk
              I had an 2001 in a while ago where I saw this style bush.
              Both the front bush and the ones in the cover were changed from 02/2002 according to RealOem.
              E46 ///M3 • 12/2002 • phönix-gelb • 6MT
              E39 ///M5 • 12/1998 • avus-blau • 6MT
              E60 ///M5 • 11/2006 • saphir-schwarz • 6MT

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                #37
                This thread is "best" for street and controlling nvh. For track you can go solid everywhere or not care.

                034 motorsport is a recent option which seems to be solid rubber (no fluid fills) that could prove stiffer but no nvh penalty for folks. I haven't tried them yet, but curious if anyone else has.

                Sent from my SM-S911U1 using Tapatalk

                Youtube DIYs and more

                All jobs done as diy - clutch, rod bearings, rear subframe rebush, vanos, headers, cooling, suspension, etc.

                PM for help in NorCal. Have a lot of specialty tools - vanos, pilot bearing puller, bushing press kit, valve adjustment, fcab, wheel bearing, engine support bar, etc.

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                  #38
                  Originally posted by mrgizmo04 View Post
                  This thread is "best" for street and controlling nvh. For track you can go solid everywhere or not care.

                  034 motorsport is a recent option which seems to be solid rubber (no fluid fills) that could prove stiffer but no nvh penalty for folks. I haven't tried them yet, but curious if anyone else has.

                  Sent from my SM-S911U1 using Tapatalk
                  Saw those too, have had mixed results with 034 quality products in the past with Audi aftermarket, fwiw.

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                    #39
                    Originally posted by mrgizmo04 View Post
                    This thread is "best" for street and controlling nvh. For track you can go solid everywhere or not care.

                    034 motorsport is a recent option which seems to be solid rubber (no fluid fills) that could prove stiffer but no nvh penalty for folks. I haven't tried them yet, but curious if anyone else has.

                    Sent from my SM-S911U1 using Tapatalk
                    I just bought them based on some research and video by FCP. Haven't installed them yet. I have to deal with the starter first now ...

                    Sent from my SM-S928U using Tapatalk

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