• DCT Build Part VII - Taking the BMW E92 M3 DCT to the next level, 800+ wheel horsepower clutch disc capacity

      You have seen the DCT taken apart, what it looks like inside, worn clutch discs, and brand new higher capacity clutch discs made. The new discs handle 600+ and 700+ whp respectively. With my power goals, SSP has decided to build a clutch pack that is beyond anything developed at this time for the DCT. What is the power goal? Well, it is beyond what is currently available and SSP is currently developing a clutch disc pack capable of over 800 wheel horsepower.

      How is this being done?

      The current clutch discs are of a thicker material than the stock discs. However, the stock clutch pack has 9 discs in it. By increasing the number of clutch discs they are going to increase the maximum torque capacity. By going to a thicker material and increasing the total number of discs to 11, the DCT in the BMW M3 will be taken to a level no one previously thought was possible. This is going to be similar to the GTR 1000 hp clutch setup by SSP (pictured) but the GTR uses more clutch discs albeit smaller, thinner discs.

      What else is being done and how much time will it take?

      The DCT is going to receive a cooling system based on what SSP has done with the GTR's. This will be a DCT specific application and will be great for the guys who track. No more overheats, no more staying away from the track on hot days. Look for a separate build thread specifically for the cooling system in the next few weeks. Regarding the time period, expect completion next month with the car returning fully assembled and capable of handling the increased power.

      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 3082 Comments
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Nothing more than weeks now that I can see. I'll call and confirm.
        Lol, "weeks".....remember people there are 52 weeks in a year. Stickys build has only taken weeks to complete, 156 weeks to be exact.

        I bet it is not ready by April 1st.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        Lol, "weeks".....remember people there are 52 weeks in a year. Stickys build has only taken weeks to complete, 156 weeks to be exact.

        I bet it is not ready by April 1st.
        Thanks for the support Jim.
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Thanks for the support Jim.
        You just don't know how badly I want to race you.
      1. nafoo's Avatar
        nafoo -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        You just don't know how badly I want to race you.
        You don't know how badly I want to see you two race! Let's get a production crew out there to document everything, Top Gear style Click here to enlarge

        $#@!, let's get Top Gear out there to document both builds!
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        You just don't know how badly I want to race you.
        It's fine man, the feeling is mutual. It's a long list of people, trust me.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by nafoo Click here to enlarge
        You don't know how badly I want to see you two race! Let's get a production crew out there to document everything, Top Gear style Click here to enlarge

        $#@!, let's get Top Gear out there to document both builds!
        No, no, no. I'm launching my own Youtube channel and won't be giving anyone else the benefit of my content. Why invite Top Gear when you can beat them at their own game?
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by nafoo Click here to enlarge
        You don't know how badly I want to see you two race! Let's get a production crew out there to document everything, Top Gear style Click here to enlarge

        $#@!, let's get Top Gear out there to document both builds!
        Top Gear might be off the air by the time Stickys car gets done, the Stig might be living in a nursing home and cars might have wings and fly by the time his car is ready.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        Top Gear might be off the air by the time Stickys car gets done, the Stig might be living in a nursing home and cars might have wings and fly by the time his car is ready.
        But that's better because I want to be the Stig.
      1. klipseracer's Avatar
        klipseracer -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        Sticky, you keep hiding behind the DCT excuse, GT-R's have a more complext DCT than your car and people have been building GT-R for years. Audi R8's have a DCT and tuners have been building some sick R8s for years. $#@!ing NASA put a man on the moon in less time than this build took....and a DCT is not rocket sciene.
        sorry sticky, but this was funny.
      1. klipseracer's Avatar
        klipseracer -
        The long rod idea is very interesting. So are you going to use a spacer of some kind? Wouldn't this create issues with the rings when it crosses from the stock cylinder walls onto the spacer? Or would the gap between the top of the piston and the rings not require the rings to cross this threshold? Or perhaps a different shaped piston top...
      1. benzy89's Avatar
        benzy89 -
        Click here to enlarge Originally Posted by klipseracer Click here to enlarge
        Wouldn't this create issues with the rings when it crosses from the stock cylinder walls onto the spacer? Or would the gap between the top of the piston and the rings not require the rings to cross this threshold?
        Elongated sleeves will compensate for the "spacer", so the pistons + rings will never travel across a disruption
      1. DFM's Avatar
        DFM -
        Click here to enlarge Originally Posted by JRCART Click here to enlarge
        Sticky, you keep hiding behind the DCT excuse, GT-R's have a more complext DCT than your car and people have been building GT-R for years. Audi R8's have a DCT and tuners have been building some sick R8s for years. $#@!ing NASA put a man on the moon in less time than this build took....and a DCT is not rocket sciene.
        As of the 2013 model they do...
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by klipseracer Click here to enlarge
        sorry sticky, but this was funny.
        Laugh at whatever you want to man.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by benzy89 Click here to enlarge
        Elongated sleeves will compensate for the "spacer", so the pistons + rings will never travel across a disruption
        Smart man.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by DFM Click here to enlarge
        As of the 2013 model they do...
        Thank you, they just got it and these haven't even hit showrooms.
      1. DavidV's Avatar
        DavidV -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        It's fine man, the feeling is mutual. It's a long list of people, trust me.
        Ok, I'm back to feeling for you for the missing of your car..
        I can see raising the deck highth of the block having all sort of delaying implications.
        I'll be try to be more patient...again.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by DavidV Click here to enlarge
        Ok, I'm back to feeling for you for the missing of your car..
        I can see raising the deck highth of the block having all sort of delaying implications.
        I'll be try to be more patient...again.
        I haven't said what was done really. I'll go into it all eventually, I promise. I'm not the kind of guy not to.
      1. klipseracer's Avatar
        klipseracer -
        Click here to enlarge Originally Posted by DFM Click here to enlarge
        As of the 2013 model they do...
        But I thought you mentioned that it wouldn't be necessary to 'sleeve' the block? So I had assumed this would be done without any sleeving work.
      1. benzy89's Avatar
        benzy89 -
        Click here to enlarge Originally Posted by klipseracer Click here to enlarge
        But I thought you mentioned that it wouldn't be necessary to 'sleeve' the block? So I had assumed this would be done without any sleeving work.
        I'm gonna assume you meant to quote me since I previously quoted you about the sleeves being elongated to pass through the spacer. All Gintani Stage 3 builds get sleeved blocks. The problem is that when you strap a Vortech YSI blower on, the S65 alusil block has flex issues. The iron spacer is there to give the block additional rigidity (and in turn, fight off the block flex).
      1. klipseracer's Avatar
        klipseracer -
        Click here to enlarge Originally Posted by benzy89 Click here to enlarge
        I'm gonna assume you meant to quote me since I previously quoted you about the sleeves being elongated to pass through the spacer. All Gintani Stage 3 builds get sleeved blocks. The problem is that when you strap a Vortech YSI blower on, the S65 alusil block has flex issues. The iron spacer is there to give the block additional rigidity (and in turn, fight off the block flex).
        No I meant to quote sticky as it was his comment I was referencing. But I recalled wrong, he said he wasn't going to do flanged sleeves. Thats where my confusion came from as I thought he said no sleeves period.