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    • DCT Build Part XII - Build complete, pictures of final assembly, transmission cooler, and Viton seals

      Well, this has been a rather lengthy road to completion but the transmission is basically complete. The car was dropped off by SSP last month to Gintani who should have the motor in by the end of this week. The problem is SSP mounted their trans cooler in the location the heat exchanger for the supercharger needs to go so SSP will need to come to Gintani's facility to re-run their lines as the cooler will need to go in a different location. What took so long for this update? Well, we have been waiting, and waiting, and waiting for SSP to send us details on the Viton seals that required 3 redesigns but never received the information on why these seals are superior to the stock units.

      So, I decided to do my own research and here is what I came up with. These are the stock BMW seals used in the DCT. What is wrong with them exactly? We do not know other than they apparently are not up to the task:










      Here are the Viton seals which delayed the project by 3 months. Viton is a synthetic rubber used for seals, O-rings, things of that sort. Viton was likely used as it is less susceptible to decay and already used in BMW applications such as in VANOS. Viton has much higher temperature and chemical resistance characteristics than the stock seals. Here is what they look like:










      This is the DCT cooler that was mounted by SSP up front. This needs to be moved somewhere else as the supercharger heat exchanger will need to go there. This means SSP will need to come out and run their lines again checking all their fluids and so forth before tuning can take place:














      This is the final assembly. So, the transmission is built but it took about a year longer than estimated. I believe I was as patient as possible and hopefully this will all be wrapped up in December with a built motor, built transmission, a YSI, and a ton of horsepower.





































      This article was originally published in forum thread: M3 DCT Build Journal - World's First BMW DCT Build started by Sticky View original post
      Comments 2372 Comments
      1. inter1032's Avatar
        inter1032 -
        i hate how posts get hidden, seems like something the other site would do....
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by inter1032 Click here to enlarge
        i hate how posts get hidden, seems like something the other site would do....
        You can still read them if you have enough rep so I don't know what to tell you. Posts don't get deleted unlike the other site.
      1. benzy89's Avatar
        benzy89 -
        Click here to enlarge Originally Posted by inter1032 Click here to enlarge
        i hate how posts get hidden, seems like something the other site would do....
        It's a high rep privilege, encourages forum participation. I was sub-1,000 a few months ago, so I know your frustration.
      1. nafoo's Avatar
        nafoo -
        Click here to enlarge Originally Posted by benzy89 Click here to enlarge
        It's a high rep privilege, encourages forum participation. I was sub-1,000 a few months ago, so I know your frustration.
        I'm soooo close!
      1. Mr.Squeeze's Avatar
        Mr.Squeeze -
        Click here to enlarge Originally Posted by nafoo Click here to enlarge
        I'm soooo close!

        Yet Im so far lol oh well
      1. THATDONFC's Avatar
        THATDONFC -
        When do you get to drive the car? I can hear it on the dyno all the way from Van Nuys Blvd.
      1. benzy89's Avatar
        benzy89 -
        Click here to enlarge Originally Posted by THATDONFC Click here to enlarge
        When do you get to drive the car? I can hear it on the dyno all the way from Van Nuys Blvd.
        If you can, try to take audio of the car. Would love to hear how it sounds since you guys are ~1 block away
      1. Ak335i's Avatar
        Ak335i -
        Click here to enlarge Originally Posted by nafoo Click here to enlarge
        I'm soooo close!
        repped to get ya closer! Click here to enlarge
      1. nafoo's Avatar
        nafoo -
        Click here to enlarge Originally Posted by Ak335i Click here to enlarge
        repped to get ya closer! Click here to enlarge
        <3
      1. c32AMG-DTM's Avatar
        c32AMG-DTM -
        Sticky, congratulations- glad to hear your car is running. 600 miles on the dyno? Wow. Any dyno graphs for us to see?

        Congratulations again- I'm sure it feels good to be back in action after so long. Now drive it like you stole it! Click here to enlarge
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by THATDONFC Click here to enlarge
        When do you get to drive the car? I can hear it on the dyno all the way from Van Nuys Blvd.
        Hah yeah since the tags expired they can't drive it also one of the reasons these idiots going just by miles and no street time is just plain... well, idiotic.

        I'm dropping the tags off today and need to go buy some pails of FTW Purple.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by c32AMG-DTM Click here to enlarge
        Any dyno graphs for us to see?
        No.
      1. Sledgehammer's Avatar
        Sledgehammer -
        Threw some reps to folks who are close to 1000pts... So cliff notes version is Sticky is threatening not to show in order to teach @JRCART a lesson. Thread is full of win, I just wanna see a race jump off. Rather curious what this car will make HP wise and how the trans holds up to the power. The wait continues!
      1. Sticky's Avatar
        Sticky -
        My car runs on my schedule.
      1. Black Sheep's Avatar
        Black Sheep -
        I'd rather have sticky not go on low boost. I think the event is 2 short of a notice since when the car got put back together he would be rushing into it. Cut the guy some slack. Once he is running full boost than than take care of your bets
      1. Sticky's Avatar
        Sticky -
        I'm going to do as I see fit regardless.
      1. LostMarine's Avatar
        LostMarine -
        after waiting so long, cutting corners to get to one event, before the racing season of the rest of the country even begins, would be foolish. If the car is ready, the car is ready. if its not, at least its running now.. i can already hear the hearts of the competitors already skipping beats Click here to enlarge
      1. Blitz535i's Avatar
        Blitz535i -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Hah yeah since the tags expired they can't drive it
        I'm happy to drive around with you on those expired tags, not likely you'll get a ticket with me along...

        Happy for you sir, enjoy the hell out of that car; sorry there's been a few impatient folks along the way trashing your build.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Blitz535i Click here to enlarge
        I'm happy to drive around with you with those expired tags, not likely you'll get a ticket with me along...

        Happy for you sir, enjoy the hell out of that car; sorry there's been a few impatient folks along the way trashing your build.
        It's all good, all going to be worth it.
      1. bobS's Avatar
        bobS -
        Click here to enlarge Originally Posted by LostMarine Click here to enlarge
        after waiting so long, cutting corners to get to one event, before the racing season of the rest of the country even begins, would be foolish. If the car is ready, the car is ready. if its not, at least its running now.. i can already hear the hearts of the competitors already skipping beats Click here to enlarge
        I agree, it's running, this is a fact so now get the car dialed in. I assume another 300-500 street miles will be all it needs