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Obioban's 2005 IR/IR Coupe

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    Originally posted by K-Dawg View Post

    Including the hybrid styles? I'm planning to replace the TC Kline plates currently on my car and NVH is a concern.

    Great job and thanks for documenting all of this. I can appreciate the reasoning behind the choices you've made. Looking forward to more reviews of the suspension!
    I had the hybrids before. They're closer to street than monoball in NHV. They're a nice product.

    Mostly I don't think there's a ton of increased precision to be had from the monoballs/hybrids over street plates (as in, it's not hold chassis geometry like control arm monoballs) and they are a significant NHV contributor. So, the trade off didn't seem worth it to me.

    ... and the hybrid TMS camber plates have gotten crazy expensive, once you add the perches and shock adapters (and I sold my previous set with the Ohlins).

    2005 IR/IR M3 Coupe
    2004 JR/Black M3 Wagon
    2001 LMB/Black M5 Sedan
    2017 i3 Hatchback

    Comment


      Originally posted by Obioban View Post

      Ha... more involved question than you might think.

      I found a line barely barrel springs that eibach makes, which they call their extreme travel line. That allowed me to use a shorter spring (6" IIRC) up front, while still having sufficient travel, which puts the perch above the tire at my desired ride height, allowing me to run bigger tires without compromising offsets (lets me run an ET35 front, which allows me to not have stupid camber to fit 285s). So, my front left is an eibach extreme travel 6" "barrel" spring. Eibach 0600.2530.0350.

      Front left was tricky because the extreme travel line only comes in 50 lb increments.... but then I realized that GC sells and extreme travel spring (made by eibach, though they don't use that branding-- but visibly the same thing and I confirmed that they were with GC) in 6" 375 lb. Ground control GC150.64.66.


      Both fronts are either 65mm or 2.5", I forget which (and am pretty sure most spring companies use the same thing here anyway. To fit that on the H&R shock body, I'm using Ohlins spring perches-- same thread pitch, so it's plug and play. Still using the H&R lock ring, because it's free.

      Rear left is a TCK 700 lb beehive from my old TCK coilovers. TCK TKE 360 700 R.

      Right rear is a GC linear 650 lb spring... I think 6"? With some of their cones on the top side, to protect the chassis from the spring.

      Both rears are sitting on the H&R rear ride height adjusters, because they're really nice-- let you adjust the height without taking the spring out, or wheel off, which makes corner balancing way easier.
      How did you get a set of Ohlin front perches with 65mm/2.5” ID? Getting away from 60mm would really open up spring options.
      Last edited by duracellttu; 05-16-2021, 06:48 AM.
      2005 BMW M3 ZCP Black/Black - RKP CF Roof, OE CSL Trunk, JCSL Diffuser | Paul Claudes Tune | Kassel Perf. CSL ECU+MAP Sensor | Lang Stage 2.5 Head | 288/280 Schrick Cams+DLC Followers | CSL Karbonious Airbox+OE Snorkel | SS V1 Stepped+Catted Sec 1+Res. Twin Pipe+Race | 3.91, 3 stage clutch | TCK SA 450/500 | Vorshlag Camber Plates | Rogue Eng ASP,RSM | AKG FCABs,RTABs,SFBs | TMS Sways,Camber Arms,Pullies | Mason Race Strut,Rear X-Brace | AS SSK | SPAL | Redish Reinforcement | Turbo Toys V2 Hub

      Comment


        Originally posted by duracellttu View Post

        How did you get a set of Ohlin from perches with 65mm/2.5” ID? Getting away from 60mm would really open up spring options.
        I bought them from 3DM, and Ohlins reseller/rebuilder.
        (833) 323-1117

        2005 IR/IR M3 Coupe
        2004 JR/Black M3 Wagon
        2001 LMB/Black M5 Sedan
        2017 i3 Hatchback

        Comment


          Originally posted by Obioban View Post

          I bought them from 3DM, and Ohlins reseller/rebuilder.
          (833) 323-1117
          ^ Barry at 3DM is great! Close relationship with Öhlins USA, including a lot of testing work on BMWs for them.
          2008 M3 Sedan
          6MT, slicktop, no iDrive, 18s

          Öhlins coilovers by 3DM Motorsport

          Comment


            Classics

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            Attached Files

            2005 IR/IR M3 Coupe
            2004 JR/Black M3 Wagon
            2001 LMB/Black M5 Sedan
            2017 i3 Hatchback

            Comment


              Originally posted by Obioban View Post
              Classics


              That M5 is looking good! Polish up those tips

              Current:

              1997 BMW M3 - Boston Green/Modena
              2003 BMW M3 · Coupe · 6MT - Alpine White/M-Texture Alcantara

              Comment


                Originally posted by Obioban View Post
                Good progress recently (later than I hoped, but... big undertakings this winter)...

                Installed the final tube of the brake ducting, and confirm it fits without issue in all positions:

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                I'm curious to hear what made you move away from your custom 3D printed brake ducts. I used your design to print a pair over the winter. How do you like the Hard motorsport kit, specifically the slim low profile ducting component they now have?
                Last edited by bryce2113; 06-09-2021, 07:08 PM.

                Comment


                  Originally posted by bryce2113 View Post


                  I'm curious to hear what made you move away from your custom 3D printed brake ducts. I used your design to print a pair over the winter. How do you like the Hard motorsport kit, specifically the slim low profile ducting component they now have?
                  The material I used didn’t hold up to the heat (they semi melted), and I don’t have access to a large enough 3D printer at my née job… so my hand was forced.

                  I kept the mounting brackets for future use, should I get access to one again…

                  2005 IR/IR M3 Coupe
                  2004 JR/Black M3 Wagon
                  2001 LMB/Black M5 Sedan
                  2017 i3 Hatchback

                  Comment


                    Originally posted by Obioban View Post

                    The material I used didn’t hold up to the heat (they semi melted), and I don’t have access to a large enough 3D printer at my née job… so my hand was forced.

                    I kept the mounting brackets for future use, should I get access to one again…
                    Got it, thanks! I bought an Ender 5Plus which works great. I printed the first set in high temp PLA. Going to see how those hold up. Otherwise I have some carbon infused ASA I'm going to give a go.

                    Build is looking sick though, kudos.

                    Comment


                      Do the pictures on the first page just not load for anyone else? They aren't showing on my computer or my phone
                      2005 BMW ///M3 Alpine White/Dove Grey 6MT

                      Comment


                        Yeah, I need to go through and replace them. Host went down.

                        2005 IR/IR M3 Coupe
                        2004 JR/Black M3 Wagon
                        2001 LMB/Black M5 Sedan
                        2017 i3 Hatchback

                        Comment

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