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    • DCT Build Part VIII - Putting it back together

      As of right now, the transmission is completed and the cooling system is in the process of being completed. Where we left off was the car being taken to SSP for the build of the cooling system. To make this all make sense we will not skip ahead, instead showing you each step. Here SSP is getting ready to put it together with the new clutch discs. They laid out all the parts and used 3d scanning equipment to record them to aid in the production of the parts. Everything was laid out to make sure the parts were clean and accounted for. Additionally, they were working on prototype viton seals for the transmission. The next update will have details on the cooling system.























      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 3052 Comments
      1. Velocity26's Avatar
        Velocity26 -
        You decrease the piston height the same amount that you make the rod longer, that keeps the TDC height and compression ratio the same overall, but the longer rod goes through less angular movement through the same revolution of the crank. The only thing that affects the stroke is the crank. If you increase the rod length, without decreasing the piston height, you increase the compression.
      1. lughed's Avatar
        lughed -
        I'm not going to lie, i am not a dct guy but i do like innovation and new things but all the secrecy have caused me to loose some interest. At this point im just awaiting the outcome. I actually thought it was done already.
      1. NikB316's Avatar
        NikB316 -
        This thing is going to be ridiculous!
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by bdtsulev Click here to enlarge
        I would think you could essentially use an iron spacer in between the block and head to raise the deck height. Or perhaps the flanges on the sleaves themselves, if widened over the top of the block could be used as the spacer. I think that would also help keep the block from flexing. I guess we will find out soon enough what exactly was done.
        Or not use flanged sleeves and brace them another way so you don't remove material from the top of the block to maintain its strength.
      1. fastgti69's Avatar
        fastgti69 -
        Great info about the rod angle and length. Makes so much sense the way he stated it for me. Thanks @bdtsulev I wish I can rep you more.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by lughed Click here to enlarge
        I'm not going to lie, i am not a dct guy but i do like innovation and new things but all the secrecy have caused me to loose some interest. At this point im just awaiting the outcome. I actually thought it was done already.
        As stated things had to be redone. Whether you lose interest or not is not what's important.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Velocity26 Click here to enlarge
        You decrease the piston height the same amount that you make the rod longer, that keeps the TDC height and compression ratio the same overall, but the longer rod goes through less angular movement through the same revolution of the crank.
        There you go, it's all about the angular movement.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by NikB316 Click here to enlarge
        This thing is going to be ridiculous!
        Exactly, going to be way cool especially once it's all laid out. Just a process and fun development to see what it takes to do and make it work. I don't know why people don't appreciate the time and effort instead of demanding results as if I don't want my car back myself.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by benzy89 Click here to enlarge
        But not everybody wants a GTR.... Just like not everyone wants a Supra, a Turbo E46 M3, a TT-G or TT-Viper. BUT luckily because they are some very dedicated enthusiasts on each platform, they take the torch and lead the platform into it's next big development (a more aggressive supercharger/turbo kit). It's these enthusiasts that we can thank for taking cars like the Supra, E46 M3, Gallardo + Vipers from their tame stock power levels, to 1.5k-2.k+ WHP monsters. There's no need to be a negative $#@!ing nancy and just $#@! on Sticky (or anybody's) build thread when they're pushing their cars and the motor into unknown territories; they're doing a favor for the community & you should never want to see any vendor fail.
        This. Ditching the S65 to build a GTR isn't the answer for building big HP M3's.

        Even other motors have growing pains as well. It's a process and the GTR didn't make it overnight either.
      1. bdtsulev's Avatar
        bdtsulev -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Or not use flanged sleeves and brace them another way so you don't remove material from the top of the block to maintain its strength.
        Should be an impressive piece of engineering, can't wait to see it
      1. bdtsulev's Avatar
        bdtsulev -
        Click here to enlarge Originally Posted by fastgti69 Click here to enlarge
        Great info about the rod angle and length. Makes so much sense the way he stated it for me. Thanks @bdtsulev I wish I can rep you more.
        Glad I could help
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by bdtsulev Click here to enlarge
        Should be an impressive piece of engineering, can't wait to see it
        Thanks, it's been a lot of work.
      1. singletrack's Avatar
        singletrack -
        Sorry to hear about the challenges with the sleeves and block. Here's hoping they get it sorted and you are back on the road.

        Not sure if you know, but what power levels has VAC hit with their sleeved s65's?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by singletrack Click here to enlarge
        Not sure if you know, but what power levels has VAC hit with their sleeved s65's?
        No dyno numbers posted.
      1. NikB316's Avatar
        NikB316 -
        Exactly...there are too many people out there who even think that one should just try to build upon an existing kit to try to get the most out of an M3...the same logic would mean that is as far as an e92 M3 will get. If tuners never tried to build a turbo setup, insane transmission setups to handle big power, etc. we wouldn't have the huge power cars we do today. This also takes customer demand and sacrifice as they need to start somewhere! People should appreciate any member of the community who is willing to be without their car for such a long period of time. They could easily be driving around their car and just wait for someone else to do it so they can buy the same kit and be without their car for days opposed to potentially years.

        Innovation requires sacrifice.




        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Exactly, going to be way cool especially once it's all laid out. Just a process and fun development to see what it takes to do and make it work. I don't know why people don't appreciate the time and effort instead of demanding results as if I don't want my car back myself.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by NikB316 Click here to enlarge
        Exactly...there are too many people out there who even think that one should just try to build upon an existing kit to try to get the most out of an M3...the same logic would mean that is as far as an e92 M3 will get. If tuners never tried to build a turbo setup, insane transmission setups to handle big power, etc. we wouldn't have the huge power cars we do today. This also takes customer demand and sacrifice as they need to start somewhere! People should appreciate any member of the community who is willing to be without their car for such a long period of time. They could easily be driving around their car and just wait for someone else to do it so they can buy the same kit and be without their car for days opposed to potentially years.

        Innovation requires sacrifice.
        Well said.
      1. PEI330Ci's Avatar
        PEI330Ci -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        You're onto something sir.
        If this is the case, the timetable is completely understandable. This involves not only changing the deck height, but also the valve-train drive, and everything in the middle of the "V". (Intake manifold, throttle body assembles, etc)

        If I was doing this, I would be changing one part at a time, then moving onto the next component to avoid compound clearance issues. This takes time....
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by PEI330Ci Click here to enlarge
        If this is the case, the timetable is completely understandable. This involves not only changing the deck height, but also the valve-train drive, and everything in the middle of the "V". (Intake manifold, throttle body assembles, etc)

        If I was doing this, I would be changing one part at a time, then moving onto the next component to avoid compound clearance issues. This takes time....
        You're one of the few people who understands, appreciates, and doesn't criticize.

        You have a wonderful build thread that obviously is time consuming with a lot of engineering and money involved yet people appreciate the project. But since I'm me I get baseless criticism instead.
      1. MisterEm's Avatar
        MisterEm -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        But since I'm me I get baseless criticism instead.
        We all want to see your car run Sticky, but I truly hope you are being sarcastic on that last point.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by MisterEm Click here to enlarge
        We all want to see your car run Sticky, but I truly hope you are being sarcastic on that last point.
        Oh no, not at all. The dynamic changes when I'm involved.