• 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 LostMarine Click here to enlarge
        after waiting so long, cutting corners to get to one event, before the racing season of the rest of the country even begins, would be foolish. If the car is ready, the car is ready. if its not, at least its running now.. i can already hear the hearts of the competitors already skipping beats Click here to enlarge
        absolutely agree with this....hence the fact im not going to pocono....that and they damn near want $1k for all the events....
      1. M3_WC's Avatar
        M3_WC -
        Click here to enlarge Originally Posted by LostMarine Click here to enlarge
        after waiting so long, cutting corners to get to one event, before the racing season of the rest of the country even begins, would be foolish. If the car is ready, the car is ready. if its not, at least its running now.. i can already hear the hearts of the competitors already skipping beats Click here to enlarge
        Agree. Who cares about this event...there will be many other events.

        But some videos and dynos will be in order.Click here to enlarge
      1. Jake@Eurocharged.com's Avatar
        Jake@Eurocharged.com -
        Click here to enlarge Originally Posted by ecampbell Click here to enlarge
        Jake, pm me the details if you would.
        I had already been talking to blake for you my friend
      1. nafoo's Avatar
        nafoo -
        Click here to enlarge Originally Posted by Sledgehammer Click here to enlarge
        Threw some reps to folks who are close to 1000pts... So cliff notes version is Sticky is threatening not to show in order to teach @JRCART a lesson. Thread is full of win, I just wanna see a race jump off. Rather curious what this car will make HP wise and how the trans holds up to the power. The wait continues!
        Thanks buddy ;D
      1. Black Sheep's Avatar
        Black Sheep -
        Click here to enlarge Originally Posted by Jake@Eurocharged.com Click here to enlarge
        I had already been talking to blake for you my friend
        Click here to enlarge
      1. Autobahn335i's Avatar
        Autobahn335i -
        Click here to enlarge Originally Posted by nafoo Click here to enlarge
        I'm soooo close!
        You're lucky. I'm far away lol
      1. nafoo's Avatar
        nafoo -
        Click here to enlarge Originally Posted by Autobahn335i Click here to enlarge
        You're lucky. I'm far away lol
        You'll get there young grasshopper. Time and patience my friend.
      1. Itsbrokeagain's Avatar
        Itsbrokeagain -
        Good work Joe, hopefully it will lay down some excellent numbers...
      1. Sticky's Avatar
        Sticky -
        We shall see, I'm excited.
      1. inter1032's Avatar
        inter1032 -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        We shall see, I'm excited.
        why dont we have any dynos yet or maybe some quick pulls? Click here to enlarge
      1. Sticky's Avatar
        Sticky -
        Because break in.
      1. ezec63's Avatar
        ezec63 -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Hah yeah since the tags expired they can't drive it also one of the reasons these idiots going just by miles and no street time is just plain... well, idiotic.

        I'm dropping the tags off today and need to go buy some pails of FTW Purple.
        hmmmm how did this slip by with no one asking questions ...

        FTW Purple ?!? your tuned for e85 and have the proper injectors? if so wow people will be in for a real surprise this thing will be a killer ! i have a c63 but a 4.0 liter V8 revving to 8+K with a sleeved block + YSI blower and now FTW E85 = HOLY $#@! ... RESPECT !! Click here to enlarge
      1. ZooyorQ's Avatar
        ZooyorQ -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Because break in.
        I've always followed the principal that if its right, its right.. and you'll know pretty quickly. The rings seat in minutes, and other than a few additional oil changes during break in there's really no reason not to run it all out.

        Or atleast on all my built motors thats what i've done. Just finished building the motor tonight, broke it in on the dyno, will be at shift sector ready to rock and roll.
      1. Laloosh's Avatar
        Laloosh -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        I know the pros and cons but there are more cons than pros, the Mustang and Vette guys do not even run them anymore, the big dawgs are running turbos or twin screws. Since my money race with Sticky is a 1/4 mile that is why I said I am even less worried. You are right about the big end power but in many ways a centri takes many of the negative characteristic of a single big turbo, the bigger the blower the bigger the lag(for lack of a btter term). Lets face it,its pretty dated technology when talking about forced induction applications.
        Actually the big dog on the 5.0 is a paxton centri. Car is making something like 1200whp and runs mid 8s full weight on drag radials lol. Centris are the way to go my friend, and it is what I am buying for my 5.0.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by ZooyorQ Click here to enlarge
        I've always followed the principal that if its right, its right.. and you'll know pretty quickly. The rings seat in minutes, and other than a few additional oil changes during break in there's really no reason not to run it all out.

        Or atleast on all my built motors thats what i've done. Just finished building the motor tonight, broke it in on the dyno, will be at shift sector ready to rock and roll.
        This motor is a bit different than most built blocks. There are a few areas to pay attention to and check before upping the boost. Now it's a matter of upping the boost progressively and street miles. Then race tune.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by ezec63 Click here to enlarge
        FTW Purple ?!? your tuned for e85 and have the proper injectors? if so wow people will be in for a real surprise this thing will be a killer ! i have a c63 but a 4.0 liter V8 revving to 8+K with a sleeved block + YSI blower and now FTW E85 = HOLY $#@! ... RESPECT !!
        Exactly and I'd go bigger than the YSI if I could make it fit. My fuel system has 1000cc injectors and some beefy pumps. Nobody else comes close on the S65 so yes FTW Purple it is.
      1. ZooyorQ's Avatar
        ZooyorQ -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        This motor is a bit different than most built blocks. There are a few areas to pay attention to and check before upping the boost. Now it's a matter of upping the boost progressively and street miles. Then race tune.
        Well in that case, I wish you luck, hope to see you at the event!
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by ZooyorQ Click here to enlarge
        Well in that case, I wish you luck, hope to see you at the event!
        Sunday.
      1. nafoo's Avatar
        nafoo -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Sunday.
        Can't wait to see more videos of the car running. I probably watched the video on the dyno 10+ times. It sounds like it was to be unleashed but the dyno operator kept shifting right before big power. He has a lot more control over his lead foot than I do with mine.
      1. Black Sheep's Avatar
        Black Sheep -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Sunday.
        Click here to enlarge