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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. folgrz's Avatar
        folgrz -
        Congrats!
      1. hifiguy@gaphix's Avatar
        hifiguy@gaphix -
        Props!

        Now when can we see it in LA? Click here to enlarge
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by hifiguy Click here to enlarge
        Props!

        Now when can we see it in LA? Click here to enlarge
        Very soon...
      1. amclint's Avatar
        amclint -
        Awesome, glad to see it's up and running. Looking forward to more information.
      1. nafoo's Avatar
        nafoo -
        Click here to enlarge Originally Posted by amclint Click here to enlarge
        Awesome, glad to see it's up and running. Looking forward to more information.
        This thread became really positive very fast. I wonder what @JRCART is doing now that he has nothing to post about here, lol.
      1. Jake@Eurocharged.com's Avatar
        Jake@Eurocharged.com -
        Click here to enlarge Originally Posted by TZ04XJR Click here to enlarge
        Good to know you guys plan on attending. I typically make every event but skipped this last one because I was worn out from TX2k. I'll be happy to see some Euro muscle down there. Last October there were countless CTS-V's, GT500's and Z06's.
        it's always a fun time. We should be down there as well. Seems like there are always a ton of Z06's but its fun to screw with them. When we ran the 180 on of the vette guys was in disbelief and asking what we did to it. Jerry replied oh its stock, we are just getting baselines to work off lmao...

        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        Yep, already on my calendar, I mentioned it in this thread somehwere along the line in the past few weeks.
        we will have to get $#@!ty together in the pits

        Click here to enlarge Originally Posted by nafoo Click here to enlarge
        You're*

        Don't forget about this @Sticky @JRCART @ecampbell

        http://www.texasmile.net/

        October 25-27
        Click here to enlarge

        Click here to enlarge Originally Posted by ecampbell Click here to enlarge
        Agreed, am also on the waiting list for wannagofast.

        Maybe split the cost with Jimmy and we will start out own annual piss up/party!!
        down, I can probably get a decent group of folks...
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by nafoo Click here to enlarge
        Nice, it's a shame registration isn't until August. I'll put it on my calendar as well. Who know's maybe my VTX-R63 will be installed and running by then Click here to enlarge
        I will have my SLS Black Series by the time of the Fall Texas Mile.
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        No, I am not, not even really familiar with this event.
        Rolling half mile with full timing and radar.
      1. nafoo's Avatar
        nafoo -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        I will have my SLS Black Series by the time of the Fall Texas Mile.
        One day, I hope to be at your level. I should have gotten into the trucking business! :p
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        Rolling half mile with full timing and radar.
        Sounds great to me but things need to be hashed out with the track rentals, who else will attend, etc. The half mile event won't really give us an opportunity to have complete control of runs, timing, videos, etc., at our discretion.
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Sounds great to me but things need to be hashed out with the track rentals, who else will attend, etc. The half mile event won't really give us an opportunity to have complete control of runs, timing, videos, etc., at our discretion.
        Who cares about who else will come, we split the rentals 50/50 if we get additional people to participate we decide on a fair price to charge them. I have paid for a bunch of rentals out of my own pocket so you and I and Earl should be able to handle the costs without worrying about who shows up. To be honest I do not want a bunch of people at the events anyhow, especially the road course. I have Wannagofast the first weekend of June and Goldrush Rally Dallas to Chicago leg later that week and the following weekend, I am available the weekend after that or any weekend in May except Memorial Day weekend. Shoot me your dates and I will rent the tracks.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        Who cares about who else will come, we split the rentals 50/50 if we get additional people to participate we decide on a fair price to charge them. I have paid for a bunch of rentals out of my own pocket so you and I and Earl should be able to handle the costs without worrying about who shows up. To be honest I do not want a bunch of people at the events anyhow, especially the road course. I have Wannagofast the first weekend of June and Goldrush Rally Dallas to Chicago leg later that week and the following weekend, I am available the weekend after that or any weekend in May except Memorial Day weekend. Shoot me your dates and I will rent the tracks.
        I have no problem with other people coming I meant if it's our rental then we have more control over it.

        We'll finalize dates after this weekend.
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        I have no problem with other people coming I meant if it's our rental then we have more control over it.

        We'll finalize dates after this weekend.
        Where you staying this weekend?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        Where you staying this weekend?
        No clue.
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        No clue.
        Better get on it, I booked my room less than two weeks ago and there were four rooms left in the entire town at that time.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        Better get on it, I booked my room less than two weeks ago and there were four rooms left in the entire town at that time.
        It's ok I'll just stay at some crappy motel on the way or something it doesn't matter.
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        It's ok I'll just stay at some crappy motel on the way or something it doesn't matter.
        They are all crappy hotels lol, Best Western and Travelodge are the two nicest in town, next closest hotels are 38 miles away.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        They are all crappy hotels lol, Best Western and Travelodge are the two nicest in town, next closest hotels are 38 miles away.
        Whatever is available will be fine with me and I don't mind driving.
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Whatever is available will be fine with me and I don't mind driving.
        Are you driving your car or trailering it? What day are you heading out there?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        Are you driving your car or trailering it? What day are you heading out there?
        I haven't decided yet on whether I will trailer or drive. I'll be out there Friday night I guess.