• 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 Jimefam Click here to enlarge
        Glad to see some progress but 3 months for seals? and there just basic round seals! No wonder it took so long, give them this company they can usually have it to you in a week. www.ctgasket.com
        I have no explanation for the delay nor any understanding of it. I still don't understand why this took a year longer than it should have.
      1. maxnix's Avatar
        maxnix -
        I've just discovered theis thread, but I know for the Getrag DCt in the E82 there is a clutch and spring kit out there.Will the transmission cooler go into the driver's side lower opeing?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by maxnix Click here to enlarge
        I've just discovered theis thread, but I know for the Getrag DCt in the E82 there is a clutch and spring kit out there.Will the transmission cooler go into the driver's side lower opeing?
        I don't know where they are going to put it. Don't think there is room in the driver's side.

        The DCT in the E82 is the exact same as in the M3. Who has the clutch and spring kit?
      1. PEI330Ci's Avatar
        PEI330Ci -
        Great news Sticky!

        Would it not be a whole lot more efficient for SSP to get Gintani to relocate the oil cooler? It isn't that complicated; just requires re-running some lines....which should be a cake walk for Gintani.

        It's not like you need my help:

        Click here to enlarge

        Click here to enlarge
      1. maxnix's Avatar
        maxnix -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        The DCT in the E82 is the exact same as in the M3. Who has the clutch and spring kit?
        So it is a GETRAG 7DCI700?

        The clutch and spring kit was linked in some random post in the 1Addicts section of that other board run by junior Nazi wanna-bes. I didn't book mark it and it was some totally unexpected company.

        I haven't seen where you describe how you plumbed in the transmission fluid cooler. I presume you did it from the heat exchanger just behind the bottom of the radiator? In series or bypass of hte heat exchanger?
      1. THATDONFC's Avatar
        THATDONFC -
        Click here to enlarge Originally Posted by PEI330Ci Click here to enlarge
        Would it not be a whole lot more efficient for SSP to get Gintani to relocate the oil cooler? It isn't that complicated; just requires re-running some lines....which should be a cake walk for Gintani.
        I see 2 choices for SSP. They can either pay Gintani to relocate the oil cooler or they can send one of their own to relocate it at a lower cost to them. I know sticky does not want to pay to have the cooler relocated after all of the down time. Seems like the best choice for SSP is to do it themselves. Now, sticky might request they pay Gintani so it get's finished faster. That choice is up to him though.

        On another note, I look forward to seeing this build finished sticky. Post some pics once the engine is installed with the bracket and blower if you can. Also, do you know if Gintani will be fabricating a different style manifold for your car? Will their current S65 manifold support the kind of airflow the V7 will produce?
      1. fastgti69's Avatar
        fastgti69 -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Thanks Ejaz, me too. Plus I just want to shut my friends up. I have one with an EVO with bolt on's who has been running his mouth. Can't wait to see the look on his face when I dust him.
        Evo with bolt on's? Bolt on Bigger turbo or just Bolt on's? If you want I can shut him up and dust him.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by PEI330Ci Click here to enlarge
        Would it not be a whole lot more efficient for SSP to get Gintani to relocate the oil cooler? It isn't that complicated; just requires re-running some lines....which should be a cake walk for Gintani.
        Yes but I believe Kris@SSP wants to take responsibility for it.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by maxnix Click here to enlarge
        So it is a GETRAG 7DCI700?

        The clutch and spring kit was linked in some random post in the 1Addicts section of that other board run by junior Nazi wanna-bes. I didn't book mark it and it was some totally unexpected company.

        I haven't seen where you describe how you plumbed in the transmission fluid cooler. I presume you did it from the heat exchanger just behind the bottom of the radiator? In series or bypass of hte heat exchanger?
        From the very first post:

        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        The unit BMW uses for the M3 is the Getrag 7DCI600.
        The 600 and 700 differ I have no idea how but my understanding is these are the same basic thing. I didn't even know there was a 700 or if that is accurate as BMW was using the 600 from what I understand. Maybe the 700 contains some update to materials.

        I'm not sure what you mean about the how the transmission fluid cooler was plumbed? I'm pretty sure the OEM setup was all replaced. A new pan with new plumbing was created that holds more fluid and goes to the new cooler I believe. So likely bypass is the answer to your question.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by THATDONFC Click here to enlarge
        Also, do you know if Gintani will be fabricating a different style manifold for your car? Will their current S65 manifold support the kind of airflow the V7 will produce?
        A different manifold has yet to be mentioned. I hope this one stands up to everything. If not, they have work to do.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by fastgti69 Click here to enlarge
        Evo with bolt on's? Bolt on Bigger turbo or just Bolt on's? If you want I can shut him up and dust him.
        I could have shut him up when I was naturally aspirated let alone supercharged. He just wants to talk because my car has been down. When I show up with it he'll crap his pants and cry.
      1. THATDONFC's Avatar
        THATDONFC -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        A different manifold has yet to be mentioned. I hope this one stands up to everything. If not, they have work to do.
        Since we're on the topic of flow number in the other thread, I wonder what the numbers are like on their manifold.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by THATDONFC Click here to enlarge
        Since we're on the topic of flow number in the other thread, I wonder what the numbers are like on their manifold.
        No clue.
      1. maxnix's Avatar
        maxnix -
        Perhaps the 600 is an ealier version as it is no longer listed.http://www.getrag.com/en/216.1?_sear..._=0&_offset_=0
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by maxnix Click here to enlarge
        Perhaps the 600 is an ealier version as it is no longer listed.http://www.getrag.com/en/216.1?_sear..._=0&_offset_=0
        That makes sense.
      1. GG///M3's Avatar
        GG///M3 -
        So it will be in the OP hands soon?
      1. ultimateendz's Avatar
        ultimateendz -
        sticky....still no ETA for you?
      1. PennywiseM3's Avatar
        PennywiseM3 -
        On Getrag's website it says the 7DCI700 is good for 700 NM and the 6DCI600 is good for 600 NM. Is BMW installing the 7DCI700 in the newer 335is, M3 and M5?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by PennywiseM3 Click here to enlarge
        On Getrag's website it says the 7DCI700 is good for 700 NM and the 6DCI600 is good for 600 NM. Is BMW installing the 7DCI700 in the newer 335is, M3 and M5?
        I've read things that the M5 shares the same trans although I don't see how it could not get changes before going into that higher torque application.

        You meant to say 7DCI600?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by ultimateendz Click here to enlarge
        sticky....still no ETA for you?
        I'll call right now.