Carbon Fiber DS Installed

Discussion in 'SRT Hellcat Performance' started by VanishingPoint, Jul 12, 2015.

  1. VanishingPoint

    VanishingPoint Silver Member

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    Had the CF DS shipped directly to the dealership for install.

    The package was very protective, and the piece looks extremely well built...except-but we will get to that later. For now ain't we digging the seaweed wrap they gave this tube :D

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    The front where it mates to the better than the M6, A8 ;)

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    The rear...with the supplied to fit the HC superior in every way A8 :p

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    I am guess the three dots on the DS are for balance. This sucker is balanced to 9,000 RPMS.

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    Picture of the differential (inside).

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    Picture of DS (close up) that mates to the A8. Plenty of thread there.

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    Where it mates with the rear diff? Not so much. This problem was reported earlier by a user here. That is some weak shit, and they have nerve sending suck crap on a $1600 product. I will be calling them personally Monday, but yes-we went through with the install anyway.

    Here is the rear without the spacer:

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    Close up with space installed, and bolts inserted fully.

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    The little fella. Here, girth don't count, we need some length to deliver. The installer was like yeah, I'd be concerned about that in this car, but there are 8 of them so...I think they need to be 1/2 inch longer (and will be shortly) :mad:

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    Installed. Shot from the rear going forward. Plenty of space.

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    Mateing to the A8, from underneath. Again, plenty of space.

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    Please forgive me for not weighing it-which is one of the big questions out there still. I sent this to the dealership directly, and never got a chance to weigh it. Please someone weigh it when they get the chance, as there is some controversy over the weight with the spacer.

    Oh, listen to how thin it sounds:

    http://vid1296.photobucket.com/albums/ag2/VanishingPoint71/20150711_0929301_zpsfolkxlsg.mp4

    Very thin.

    Either way, I have not had a chance to really report on it's potential and if there is an extra "feel" to it. It does feel smoother during normal driving though for now.

    UPDATE: After driving it today and letting Gwendolen flex her curvaceous muscles, there is a definite improvement I am happy to report from some WOT runs in the 92 degree swelter.

    The engine was developing less HP (via dashboard diagnostics), but it felt faster and revved easier despite the heat. The engine felt lighter. Not a lot, but enough for me to notice on several full throttle runs at a time throughout the day. Also seems a bit smoother, but shifts were hard to determine...just seems like the driveline is well...lighter and does everything a little better.

    I wonder if it will reduce heat transfer? On the lift, the FACTORY driveshaft was very hot-still hot long after the exhaust pipes were cold to the touch. The CF should not do this so maybe there is an added advantage.
     
    Last edited: Jul 13, 2015
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  2. Profezzor X

    Profezzor X Silver Member

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    Nice write up... :cool:

    Looking forward to your review on the performance.
     
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  3. Aaron Vogel

    Aaron Vogel Silver Member

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    Thats the bolt they have been using for a long time now. I mentioned it to them when i put it on my 2010, i would prefer the bolts go further in the spacer at the rear. Is it needed? No, probably not, but i just ordered bolts that were a little longer and will use them when ever i get the new shaft. Waiting to see if the rumors of the Dodge replacement will come true.
     
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  4. Billet Hellcat

    Billet Hellcat Gold Member

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    Interesting your exhaust had way more clearance than mine I guess it must be the way they are welded at the factory ??
     
  5. VanishingPoint

    VanishingPoint Silver Member

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    Update in OP.
     
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  6. Cerino2000

    Cerino2000 Gold Member

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    The input side is just amazingly small. Hard to believe it can withstand the torque. I gurss it is for a reason but I don't get it.
     
  7. StellasHC

    StellasHC Platinum Member

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    Good luck!! 2015-07-12-18-09-28--630832220.jpeg 2015-07-12-18-09-23-1877205713.jpeg
     
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  8. B5 Blue

    B5 Blue Platinum Member

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  9. StellasHC

    StellasHC Platinum Member

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    The carbon fiber shafts are very sensitive to scratches, knicks, chips.. if it develops one of those, its only a matter of time before it pops. At least that is what I gathered when researching before I decided on the aluminum version.
     
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  10. B5 Blue

    B5 Blue Platinum Member

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    True that
     
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  11. Deputydog

    Deputydog Gold Member

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    Nice write-up! I have an aluminum one order.
     
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  12. Driver72

    Driver72 Gold Member

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    I wonder if that is something to worry about with the CF driveshaft? The Aluminum one should not do that, as Aluminum does not absorb heat or hold onto heat much at all. So it's strange the CF one would stay hot even long after the exhaust pipes were cold?
     
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  13. Driver72

    Driver72 Gold Member

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    Whoa. The CF one may be 2-3 lbs lighter than the aluminum but if this heat build up in the CF unit is normal (which to me is no good), and it gets knicks and chips that easily and can snap because of it....plus they needed to glue on metal weights to it to make it balanced, then for sure the aluminum one is the better one to get. Glad that's what I put in mine.

    And yes, that CF one does sound awfully thin, that would scare me a bit too. Sorry don't mean to be debbie downer here for those of you who bought the CF DS.
     
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  14. cole3986

    cole3986 Gold Member

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    I do believe that the CF comes with a warning about exceeding 300 degrees. If you look of how close it is to the exhaust, I had concerns about the heat in stop and go traffic, so I bought the aluminum one, not installed yet. Sorry to jump the thread
     
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  15. Billet Hellcat

    Billet Hellcat Gold Member

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    Ya good luck :p

    image.jpg
    image.jpg
     
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