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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 you are already prepping everyone for the excuses when I spank you at Shift Sector....motor needs to break in, we need to work our way up to the big power lol. It is a top speed event, take the gloves of and let the big dog eat. I am going predict 10 car lengths are more at Shift Sector.
        I don't really see how doing the responsible thing is an excuse. I mean you can take that however you want. I honestly want to do a full video comparison on the track, strip, roll on, everything. Shift-Sector hardly will do it justice.
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        I don't really see how doing the responsible thing is an excuse. I mean you can take that however you want. I honestly want to do a full video comparison on the track, strip, roll on, everything. Shift-Sector hardly will do it justice.
        Shift Sectormis two weeks away, if Gintani would get cracking you would have two weeks to break it in....how much $#@!ing break in do you think you need???? 250 miles, tops! anyone says otherwise they are $#@!ing idiots. This might be your first rodeo but its not my first rodeo, had plenty of built and rebuilt motors in the past, they are broken in after 250 miles.
      1. JRCART's Avatar
        JRCART -
        Where and when do you plan on doing this full side by side comparison shootout? My cars are coming homemin a few weeks. Why don't you try to get a spot at Wannagofast event in Chicago in early June, we can do Byron, 1/2 mile event and road race at Autobahn cc
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        Shift Sectormis two weeks away, if Gintani would get cracking you would have two weeks to break it in....how much $#@!ing break in do you think you need???? 250 miles, tops! anyone says otherwise they are $#@!ing idiots. This might be your first rodeo but its not my first rodeo, had plenty of built and rebuilt motors in the past, they are broken in after 250 miles.
        Honestly this isn't even important. It will take however long it takes you might as well stop mentioning the time.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        Where and when do you plan on doing this full side by side comparison shootout? My cars are coming homemin a few weeks. Why don't you try to get a spot at Wannagofast event in Chicago in early June, we can do Byron, 1/2 mile event and road race at Autobahn cc
        I want to do a full video comparison sort of episode and launch my new websites and youtube channel with it. See what I'm getting at?

        Wherever, whenever, it doesn't matter. What matters is doing it right.
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        I want to do a full video comparison sort of episode and launch my new websites and youtube channel with it. See what I'm getting at?

        Wherever, whenever, it doesn't matter. What matters is doing it right.
        Well if the race goes down at Shift Sector you can rest assured I will be posting the video the folling day.
      1. Black Sheep's Avatar
        Black Sheep -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        Where and when do you plan on doing this full side by side comparison shootout? My cars are coming homemin a few weeks. Why don't you try to get a spot at Wannagofast event in Chicago in early June, we can do Byron, 1/2 mile event and road race at Autobahn cc
        This
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        Well if the race goes down at Shift Sector you can rest assured I will be posting the video the folling day.
        See you aren't getting it.
      1. fastgti69's Avatar
        fastgti69 -
        I'm just glad he's gonna get his car back. Finally going to be a lot more traffic now with race videos and personal stage 3 built motor custom etc lol. Congrats dude, I'm happy for ya
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by fastgti69 Click here to enlarge
        I'm just glad he's gonna get his car back. Finally going to be a lot more traffic now with race videos and personal stage 3 built motor custom etc lol. Congrats dude, I'm happy for ya
        Oh wow a nice post.
      1. Autobahn335i's Avatar
        Autobahn335i -
        Finally the beast will be unleashed.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Autobahn335i Click here to enlarge
        Finally the beast will be unleashed.
        That's what she said.
      1. ultimateendz's Avatar
        ultimateendz -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        Yes fuel injection last year as well as E85 fuel. Maybe someday they will evolve beyond a pushrod motor lol

        HEY!!!....if it aint broke dont fix it Click here to enlarge my V gets its old pushrod motor installed today....YES....on a SUNDAY
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        I did not know what type of system you were going with, just expected to see a twin screw
        Sorry I was just reading back through this. And I just wanted to take an informal poll of how many people expected to see a twin screw S65. And I'd love to hear from you why you thought you would see one.

        This is me having fun without a car right now. Sometimes I even win without racing.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by LZH Click here to enlarge
        Don't let the cat out of the bag just yet dude!!! LOL
        Jesus Christ increase the displacement all you want.
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        See you aren't getting it.
        No, I guess I am not geting it?????
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Sorry I was just reading back through this. And I just wanted to take an informal poll of how many people expected to see a twin screw S65. And I'd love to hear from you why you thought you would see one.

        This is me having fun without a car right now. Sometimes I even win without racing.
        Becasue for a real world application a twin screw is a better option. Sure, if you want to make a big dyno number a centri is great but if you want a system that will perform better in multiple conditions, environments and across the rev range and make a better power curve a twin screw is the way to go....take a poll on that!

        P.S. You are not winning anything, you still have not produced a video of a car running. Not sure how you can claim "WINNING" after a three year build that is only going to net 750 or less whp. I could change the pulley on my C this afternoon and put down more power than that. There is absolutely no win in this build. Three years is a long ass time and if I gave my vehicle to a company and they dicked around with it for three years and only handed mey 750whp at the end of the build I would be pretty let down and the word "winning" would never cross my lips. Now I see why you are back peddling and pressing a race with my C BS so badly, it's the only one of my vehicles that you might possibly have a shot at but even though I built the C BS for road racing which I have made crystal clear since day one you still want to race it. So what I am going to do is call up the days I see a video of your car running and have them change me over to a race gas tune, put on a smaller pulley and order me a set of rear drag wheels and DR's for it and then give you a $#@! slap with my "slow" Black Series, but only after I give you a REAL BIG $#@! SLAP with the CLK first, becuase afterall you have been talking a big game for the last six months and been talking like you were going to break out something on par with my CLK and now it is clear that is just not the case.

        Did you even wonder how the C BS was spanking 800-100whp cars at the No Fly Zone event? Come on Sticky, you are actually an intelligent person, I am sure you can figure it out Click here to enlarge
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Jesus Christ increase the displacement all you want.
        CLUELESS....................................
      1. benzy89's Avatar
        benzy89 -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        I built the C BS for road racing which I have made crystal clear since day one you still want to race it.
        Mind me asking why you build the C BS for road racing?? Figured the CLK63 BS would've been a better track platform (wider wheelbase, more chassis rigidity, etc)
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by benzy89 Click here to enlarge
        Mind me asking why you build the C BS for road racing?? Figured the CLK63 BS would've been a better track platform (wider wheelbase, more chassis rigidity, etc)
        Actually the C has both a wider track and wheelbase(CLK BS 106.9 vs C BS 108.6) Besides that the CLK was already too bastardized into a drag car. The transmission in the C BS is far superior and has marched rev downshifts which are key for road course duty.