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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. ultimateendz's Avatar
        ultimateendz -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Good for you man. Talk, type, but I'm doing it. So just sit back and watch, okie dokie?

        been sitting back watching, building, breaking, and doing for the 3 years your car has been down, okie dokie?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by ultimateendz Click here to enlarge
        been sitting back watching, building, breaking, and doing for the 3 years your car has been down, okie dokie?
        And you will sit back and continue to do so for a bit longer, okie dokie?
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        It's no excuse, it's a fact another company had the trans for an extended period of time and that it is different from the C63 trans. The C63/M156 is not applicable here.

        The GT-R has dozens of tuners working on it, also not applicable although at least closer. And it uses a different manufacturer as it has a deeper clutch basket.

        The DCT complicates things, that's all. The programming is also an issue.
        I understand complexities of a DCT, I get that, however what I don't get is the fact that the trans/clutch people handed the car off to Gintani 12-14 months ago if I am not mistaken, I would have to go back and get you the exact date but I am sure yo know that date. What have they been doing the past year or so?
      1. ultimateendz's Avatar
        ultimateendz -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        And you will sit back and continue to do so for a bit longer, okie dokie?

        fine with me....all i want is a full explanation of why this took so long whenever you decide to show us everything
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        I understand complexities of a DCT, I get that, however what I don't get is the fact that the trans/clutch people handed the car off to Gintani 12-14 months ago if I am not mistaken, I would have to go back and get you the exact date but I am sure yo know that date. What have they been doing the past year or so?
        They sent it back October about of last year so not too long. The trans people had the car for something like 18 months, trans + car.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by ultimateendz Click here to enlarge
        fine with me....all i want is a full explanation of why this took so long whenever you decide to show us everything
        I already told you that you will get it once the car is done. Step by step and in full detail.
      1. kiloil's Avatar
        kiloil -
        How are you going to adjust when the transmission breaks down? You know its going to be inevitable with the amount of work that is going in this transmission project, something will not be correct or something will go sideways.
      1. LostMarine's Avatar
        LostMarine -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        In the time Sticky's car has been being built I went from NA to Weistec 2.3L stage 1, then stage 1 plus with heads, then I was the test/development mule for their stage 3 plus forged internals, 3.0L blower and trans upgrade and cooling mods. Ordered another Black Series, AMG built it and shipped it over, I enjoyed it for 4 months and now it too is running a Weistec Stage 3. I am now ordering a SLS BS which at this rate is going will be here and modded before Sticky gets his car gets back.

        We were having this very same discussion here a year ago before the Shift Sector event and he was "trying to make that event" as well, he said "it was gonna be close". I am going to go out on a limb and say my SLS BS hits shore before his M3 hits the track.
        can i has your white 63 when your done.. for dirt cheap..?
      1. nafoo's Avatar
        nafoo -
        Poor Sticky, not only has he been without his car for 3 years, he has to hear it from all of us Click here to enlarge

        Take how you guys feel about his build, then multiply it by 1000 and that's how Sticky probably feels since it's his car.

        What's another couple months when it's already been 3 years?
      1. M3_WC's Avatar
        M3_WC -
        Sticky has the delay been the same problem ess gave up on with Drew's DCT?
      1. MrClean335i's Avatar
        MrClean335i -
        this is too funny
      1. MrClean335i's Avatar
        MrClean335i -
        We should have a thread with things that happened in the time lapse that this build took/is taking time to be completed.
      1. MrClean335i's Avatar
        MrClean335i -
        Iran is going to have a fully fuctional nuclear missile before Stickys car is completed. Heck North Korean has already put a satelite in orbit in less time.
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by LostMarine Click here to enlarge
        can i has your white 63 when your done.. for dirt cheap..?
        I do not sell or trade in my cars, I keep them. The C BS is my favorite, it is an awesome car and can not wait to drive it after the Weistec mods. I would not sell my CLK BS even if somebody offered to pay me every penny I have invested in it.
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by MrClean335i Click here to enlarge
        We should have a thread with things that happened in the time lapse that this build took/is taking time to be completed.
        Sticky's car is like the Boeing Dreamliner.... The Dreamliner concept began in November 2005, the first prototype was shown in late 2007, it took its first flight in December of 2009........They designed and built a $#@!ing 200 ft long Jet aircraft in not much more time than Sticky's car has taken......I guess the Dreamliner did not have a DCT Click here to enlarge
      1. fastgti69's Avatar
        fastgti69 -
        I feel bad Sticky. Hope you get your car soon.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by kiloil Click here to enlarge
        How are you going to adjust when the transmission breaks down? You know its going to be inevitable with the amount of work that is going in this transmission project, something will not be correct or something will go sideways.
        Blah blah blah
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by MrClean335i Click here to enlarge
        Iran is going to have a fully fuctional nuclear missile before Stickys car is completed. Heck North Korean has already put a satelite in orbit in less time.
        I don't have a whole country working for me trying to spite sanctions.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        Sticky's car is like the Boeing Dreamliner.... The Dreamliner concept began in November 2005, the first prototype was shown in late 2007, it took its first flight in December of 2009........They designed and built a $#@!ing 200 ft long Jet aircraft in not much more time than Sticky's car has taken......I guess the Dreamliner did not have a DCT Click here to enlarge
        Would it kill you to be positive?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by M3_WC Click here to enlarge
        Sticky has the delay been the same problem ess gave up on with Drew's DCT?
        No.