• EVO 991 GT3 interview with Porsche head of GT cars Andreas Preuninger - Talk on PDK transmission, DFI 3.8 engine forged internals, sub 7:30 Nurburgring laptime

      Great interview here done by EVO Magazine with the head of the Porsche GT car development Andreas Preuninger. The new PDK transmission going into the 991 GT3 dominates the discussion. It is interesting to see just how much thought Porsche put into whether or not to give the GT3 the 7-speed PDK transmission for a car that is supposed to offer the most pure Porsche 911 driving experience. The debate raged for a year on whether or not to do it.


      Well, Porsche felt the benefits simply outweighed any negatives and completely revised their PDK transmission for the GT3. One essentially still has full control as if they had a traditional manual and can disengage the clutch at any time. Very, very trick and very cool of Porsche to do this.

      Additionally, Andreas goes into why the car ditches the GT1 block that the racing GT3 still uses. His reasoning is that since the Carrera and Carrera S DFI engines dominate the production line they simply had to make this switch partially out of space requirements. It seems to be a move out of convenience and to keep costs down as well.

      The motor does share some parts with the Carrera S but it has titanium rods, a new forged crank, forged pistons, and a whole new cylinder head which clearly is very efficient. And yes, the GT3 now has direct fuel injection. The race cars have not made this jump it will be interesting to see if they ever will.

      And what about the Nurburgring laptime for the new car? Well, it apparently matches the GT3 RS 4.0 so that means sub 7:30. Expect something around 7:27 which is incredibly fast and actually better than Porsche hit with the Carrera GT.

      The interview is below, well worth watching.

      This article was originally published in forum thread: EVO 991 GT3 interview with Porsche head of GT cars Andreas Preuninger - Talk on PDK transmission, DFI 3.8 engine forged internals, sub 7:30 Nurburgring laptime started by Sticky View original post
      Comments 8 Comments
      1. inlineS54B32's Avatar
        inlineS54B32 -
        I love this quote "having 475 HP and having a specific output of 125 HP/l ... I tell you this is a VERY conservative figure; the car really goes like hell. The added 500 RPMs the car gives you open up a whole new world."

        Their attention to things that other car makers seems to ignore is what makes this thing so damn special.

        He then claims 0-200 km/h in 11 seconds - that's faster than the old GT3 by over a full second, and basically as fast as the forced induction GT2... I really want one of these things, pretty much more than anything else out there.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by inlineS54B32 Click here to enlarge
        I love this quote "having 475 HP and having a specific output of 125 HP/l ... I tell you this is a VERY conservative figure; the car really goes like hell. The added 500 RPMs the car gives you open up a whole new world."

        Their attention to things that other car makers seems to ignore is what makes this thing so damn special.

        He then claims 0-200 km/h in 11 seconds - that's faster than the old GT3 by over a full second, and basically as fast as the forced induction GT2... I really want one of these things, pretty much more than anything else out there.
        Glad somebody finally responded to this, it's a great interview with great info.
      1. Kjeronimo91's Avatar
        Kjeronimo91 -
        and this is why bought a 997 gt3 , nothing else compares . cant wait to see this 991 one on the road !!
      1. Wedge1967's Avatar
        Wedge1967 -
        Wow, that is really nice.
      1. Sticky's Avatar
        Sticky -
        This car with mild boost...
      1. Itsbrokeagain's Avatar
        Itsbrokeagain -
        You dont even need boost in this car....
      1. dzenno@PTF's Avatar
        dzenno@PTF -
        Every car can use a bit of boost Click here to enlarge
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Itsbrokeagain Click here to enlarge
        You dont even need boost in this car....
        You don't need boost in a lot of cars. But with a motor this efficient a little boost wouldn't hurt Click here to enlarge 600+ whp with just 6 psi I'd bet.