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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. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        ...and I will be referencing these posts as well. Trust me, you bit off more than you can chew this time.
        I guess we'll see?
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        I guess we'll see?
        Ya, you're gonna see.......
      1. JRCART's Avatar
        JRCART -
        What are you paying me for a no show when your car is not ready in three weeks?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        What are you paying me for a no show when your car is not ready in three weeks?
        Nothing, I just come to Chicago then.
      1. e38 prototype's Avatar
        e38 prototype -
        I can't believe how much of an $#@! some people can be.
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by e38 prototype Click here to enlarge
        I can't believe how much of an $#@! some people can be.
        Not an $#@!...just a realist. He has been "hopeful" his car was going to be ready since Shift Sector last spring. It's comical at this point. His build and Gintani is the laughing stock of a lot of people. I have a 1000 plus HP car THAT RUNS, I have earned the right to talk $#@!.
      1. Black Sheep's Avatar
        Black Sheep -
        You guys going to sword fight?
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by Black Sheep Click here to enlarge
        You guys going to sword fight?
        He would lose that contest too I'm affraid.
      1. Black Sheep's Avatar
        Black Sheep -
        How much you got on that?
      1. Torgus's Avatar
        Torgus -
        oh this is getting good!
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Nothing more than weeks now that I can see. I'll call and confirm.
        So what did you confirm?
      1. JRCART's Avatar
        JRCART -
        ........Meanwhile back at Weistec Click here to enlarge

        Sticky is $#@!ing clueless Click here to enlarge
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        Not an $#@!...just a realist. He has been "hopeful" his car was going to be ready since Shift Sector last spring. It's comical at this point. His build and Gintani is the laughing stock of a lot of people. I have a 1000 plus HP car THAT RUNS, I have earned the right to talk $#@!.
        Laughing stock for them getting it right on their dime? What's wrong with that?

        No appreciation for the engineering involved? No appreciation for the time and money? Are you an enthusiast or just a hater?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        So what did you confirm?
        It was already posted, they are targeting starting it this week with break in next week. Relax with the negativity already, it's getting predictable.

        This is a different car than yours so there is no point bringing yours up. I'm happy with what is being done and excited so go rain on someone else's parade.
      1. George Smooth's Avatar
        George Smooth -
        As long ad I keep hear JRcarrts car is getting stronger it makes me happy for obvious reasons.
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        It was already posted, they are targeting starting it this week with break in next week.
        It's Thursday, week is 2/3's over, please post up a video of the car running if and when it happens.
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by George Smooth Click here to enlarge
        As long ad I keep hear JRcarrts car is getting stronger it makes me happy for obvious reasons.
        Click here to enlarge
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        It's Thursday, week is 2/3's over, please post up a video of the car running if and when it happens.
        If they record it great if not, oh well. Not really concerned with this.
      1. klipseracer's Avatar
        klipseracer -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        If they record it great if not, oh well. Not really concerned with this.
        Are they typically open on saturdays?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by klipseracer Click here to enlarge
        Are they typically open on saturdays?
        Not usually but there are people doing work there most Saturdays "unofficially."