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Eliminate rear stock/CSL preload for (nearly) free

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    Eliminate rear stock/CSL preload for (nearly) free

    So I was working on the M3 wagon. On the M3 coupe I machined/welded up my own adjustable end link, which reuses the bushing from the stock end link. Probably took me 8 hours to make, and it has an unsealed bearing that will inevitably get noisy and need to be replaced one some interval.

    ... and I was working up to doing it again for the wagon, to eliminate sway preload on it.

    Then I noticed the the bracket that mounts the sway could just be spacered off the control arm with some washers. You can go either direction, just by spacering one side, vs the other. So long as your ride heights are reasonably the same left/right, this should be plenty to dial out the preload.

    I'm sure other people have thought of/done this over the years, but I've never heard of it or seen anyone do it-- and seems like it would be useful to many people.

    If you have a springs setup, goes well with using OE BMW rear spring pads ($12 each, only one should be required) to corner balance your car for nearly free (which I have also done on the M3 wagon).
    5mm # 33 53 1 136 385
    7.5mm # 33 53 1 136 386
    9mm # 33 53 1 127 224
    10mm # 33 53 1 136 387

    I have no free trick for preload up front, but turner sells a really nice stock style sealed joint adjustable end link:
    https://www.turnermotorsport.com/p-3...s-pair/?pdk=Ag

    Only one is needed, so save the second for when the first wears out

    2005 IR/IR M3 Coupe
    2012 LMB/Black 128i
    2008 Black/Black M5 Sedan

    #2
    Can’t wait to do this on my car!

    Comment


      #3
      They also make 15mm (well 14.5mm) spring pads: 33531094754

      Comment


        #4
        What are your thoughts on using washers or spacers on the lower rear sway bar mount that attaches to the wishbone to get it to sit lower?
        2005 BMW M3 ZCP Black/Black - HTE Tuning | Kassel CSL DME | 288/280 Schrick Cams+DLC Followers | Lang Head | Dinan TBs | Bosch 550cc | Radium Fuel System | Karbonious CSL Airbox+OE Snorkel | SS V1 Stepped+Catted Sec 1+Resonated Twin Pipe+Race | 3.91, 3 stage clutch | FCM 400/600 | Vorshlag Camber Plates, RSM | Rogue ASP | AKG FCABs, SFBs | TMS Front Sway, Camber Arms, Monoball RTABs, Pullies | Mason Race Strut + X-Brace | AS 30% SSK | SPAL | Redish Plates | Turbo Toys V2 Hub | WPC Rod Bearings

        Comment


          #5
          Originally posted by Obioban View Post
          I have no free trick for preload up front, but turner sells a really nice stock style sealed joint adjustable end link:
          https://www.turnermotorsport.com/p-3...s-pair/?pdk=Ag

          Only one is needed, so save the second for when the first wears out
          They actually sell individual end links, so you can get only what you need:




          Current: 2003.5 E46 ///M3 6MT - 2019 Ford Raptor 802A
          Past: 2015 F80 ///M3 6MT - 2006 E46 ///M3 6MT - 1999 E36 ///M3 5MT - 1991 E30 ///M3 5MT

          Comment


            #6
            Originally posted by DiscoWagon View Post

            They actually sell individual end links, so you can get only what you need:

            https://www.ecstuning.com/b-turner-m...nk/tsu4612a46/

            That doesn't look long enough to work on the e46M, though I could be crazy-- just going by what it looks like in the picture.

            e46 m3 specific link:

            Click image for larger version

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            the one you can buy individually:

            Click image for larger version

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            2005 IR/IR M3 Coupe
            2012 LMB/Black 128i
            2008 Black/Black M5 Sedan

            Comment


              #7
              240 - 282mm range sounds like it should be long enough though

              Comment

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