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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. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        I haven't decided yet on whether I will trailer or drive. I'll be out there Friday night I guess.
        Weistec guys and I are hitting the road around noon Friday.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        Weistec guys and I are hitting the road around noon Friday.
        Cool I'll be up there in the evening at some point.
      1. THATDONFC's Avatar
        THATDONFC -
        Pretty sure I just heard this thing drive by.
      1. ecampbell's Avatar
        ecampbell -
        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.
        I am looking to do the silver state 23 May then staying in Vegas until the 30th. Jimmy if I can leave my Krap at your shop I am good to anytime in June...
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by THATDONFC Click here to enlarge
        Pretty sure I just heard this thing drive by.
        That's a good sign.
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by ecampbell Click here to enlarge
        I am looking to do the silver state 23 May then staying in Vegas until the 30th. Jimmy if I can leave my Krap at your shop I am good to anytime in June...
        Plenty of room in my lot and it is secure and has security cameras and motion activated flood lights.
      1. e38 prototype's Avatar
        e38 prototype -
        Noooo you're supposed to bring it to Timmyfest to show me in person... dammit.
      1. DavidV's Avatar
        DavidV -
        Congrats Sticky on getting the car on tarmack Click here to enlarge
        So after 101 pages this thread can go in the books and new threads can be made on M3 victories Click here to enlarge
      1. Black Sheep's Avatar
        Black Sheep -
        Click here to enlarge Originally Posted by ecampbell Click here to enlarge
        I am looking to do the silver state 23 May then staying in Vegas until the 30th. Jimmy if I can leave my Krap at your shop I am good to anytime in June...

        Here is a spot for sale for Saturday
        http://www.thechicagogarage.com/foru...-saturday.html
      1. Jake@Eurocharged.com's Avatar
        Jake@Eurocharged.com -
        Click here to enlarge Originally Posted by Black Sheep Click here to enlarge
        Here is a spot for sale for Saturday
        http://www.thechicagogarage.com/foru...-saturday.html
        good call...
      1. Black Sheep's Avatar
        Black Sheep -
        Just looking out for the major players
      1. Sticky's Avatar
        Sticky -
        600 miles on it so far. Dropping off fuel and new tags tomorrow. Gintani will tow it out. Might just do sunday since we are cutting it close.
      1. Black Sheep's Avatar
        Black Sheep -
        nice
      1. bobS's Avatar
        bobS -
        How many miles do you need to put on it for break in?
      1. MisterEm's Avatar
        MisterEm -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        600 miles on it so far. Dropping off fuel and new tags tomorrow. Gintani will tow it out. Might just do sunday since we are cutting it close.
        Excellent Joe. Break a heart or two on low-boost.
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by bobS Click here to enlarge
        How many miles do you need to put on it for break in?
        It's got 600 miles on it , it is as broken in as it is going to get. He should be good to go for full boost by this weekend.
      1. bobS's Avatar
        bobS -
        I was thinking the same thing....but maybe the clutches need more break in time?
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        600 miles on it so far. Dropping off fuel and new tags tomorrow. Gintani will tow it out. Might just do sunday since we are cutting it close.
        Sunday only??? Get there early if you want to run the me, CLK first then the C. I am not staying all day Sunday, heading back at noon or so. Last time I checked there was a 40% chance of rain on Sunday in Coalinga, CA
      1. ecampbell's Avatar
        ecampbell -
        Click here to enlarge Originally Posted by Jake@Eurocharged.com Click here to enlarge
        good call...
        Jake, pm me the details if you would.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        It's got 600 miles on it , it is as broken in as it is going to get. He should be good to go for full boost by this weekend.
        LOL no