If you have a DSS Driveshaft you NEED to read this!

Discussion in 'SRT Hellcat General Discussions' started by YLWJKT, May 9, 2016.

  1. YLWJKT

    YLWJKT Silver Member

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    If you have a DSS Driveshaft you NEED to read this!
    (Alternative title: what I did NOT want to spend 3 hours doing this afternoon.)

    Like everyone else I got the package from DSS with the plugs and grease.
    Because I have their driveshafts on two of my cars; a Scat Pack and a Hellcat, my initial intention was to just plug the holes and go on about my business.
    Upon unpacking the box from DSS I read the directions.
    One sentence stood out at me:
    While the plugs can be installed from the outside, we strongly recommend applying grease in the CV joint and inside the trans flange. (Or something like that. I left the directions on my tool box in the shop. I definitely remember the "strongly recommend" part though)

    I had the Scat Pack at the shop so I chose to do it first.
    I tried just unbolting the driveshaft but there's not enough room to inspect/put grease into it.
    I reluctantly lowered my exhaust, unbolted both ends of the driveshaft and pulled it out.
    Boy I'm glad I did!
    The CV joint barely had any grease on it. There was some in the trans flange, and quite a bit more got slung out. There was a lot of shiny exposed bearing surface.

    [​IMG]

    Some of what was left of the grease in the CV joint was kind of hard/dried out.
    After cleaning the threads and the grease up I repacked the CV joint. I then filled the trans flange with grease, being careful not to get any into the threads so as to not compromise the Loc-tite.
    I had asked DSS for 2 containers per car and I'm glad I did. I wound up using almost 2 on the Scat Pack alone.

    I wrapped a paper towel around the CV joint and fed it into the trans tunnel.
    I removed it, applied a light coat of sealant to the face of the trans flange and bolted it back in.
    I used some tight fitting rubber vacuum caps with a dab of silicone on them to fill the holes.
    A word about using a thin plate to retain the grease: the splined end of the CV joint shaft may contact it under compression. That's why I chose to fill the trans flange and seal the holes instead.
    The Scat Pack had the DSS driveshaft on it less than a 1000 miles, although it's made two trips to the drag strip.
    I plan on doing the Hellcat in a week or so at the same time that I swap in the 3.09 diff. I'm curious to see how much grease is on it's CV joint still.

    If you have a DSS driveshaft in a 2015 up Challenger/Charger my 2 cents is that in the interest of longevity I highly recommend pulling the driveshaft and filling BOTH the CV joint and the transmission flange with grease.
     
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  2. Hemi Rocket

    Hemi Rocket Gold Member

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    How much grease is there in it from DSS?
     
  3. PlumTexasCrazy

    PlumTexasCrazy HELLCAT LIFE MEMBER Hellcat Car Club HCC Charter Member

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    Wow that's crazy!!!
     
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  4. JollyRoger

    JollyRoger Gold Member

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    Good catch!
     
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  5. MattG

    MattG Gold Member Hellcat Car Club

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    Glad you caught that before it failed.
     
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  6. YLWJKT

    YLWJKT Silver Member

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    It was packed full from DSS prior to installation.
     
  7. PlumTexasCrazy

    PlumTexasCrazy HELLCAT LIFE MEMBER Hellcat Car Club HCC Charter Member

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    What do u think of the gforce aluminum drive shaft!! Trying to get more info?? Says it's good to 1200+hp and no grease to deal with! Any thoughts ??
     
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  8. YLWJKT

    YLWJKT Silver Member

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    I have not seen one up close yet but kind of like the idea of 2 u-joints vs DSS u-joint CV joint combo.
     
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  9. PlumTexasCrazy

    PlumTexasCrazy HELLCAT LIFE MEMBER Hellcat Car Club HCC Charter Member

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    What is better for longevity, u joints or cv joint combo???
     
  10. sgoyal

    sgoyal Gold Member

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  11. Challengerfarmer

    Challengerfarmer Silver Member

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    I found the very same thing when I pulled my shaft to plug the holes. If I had to do it again, I wouldn't buy the DSS shaft because of this design flaw. All it would take is a simple cover/seal, like the original shaft has and this problem would have never happened. Maybe the grease slinging problem is a good thing. None of us would have pulled the shaft to see the lack of grease in the CV joint otherwise.
     
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  12. WNY Cat

    WNY Cat SRT Hellcat Supporter Gold Supporting Member

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    I am not a fan of the plastic plug idea so I'm in the process of designing and manufacturing copper gasket to go between the CV joint and the A8 flange. Keep in mind that I have not tried this fix yet. I am planning to have the gasket made and get the DSS aluminum driveshaft installed in 3 weeks. With that said, here is the drawing that I gave to the machine shop.

    20160510_054717-1-1.jpg
    They are going to use a water jet cutting machine to make me a copper gasket that is 0.032" thick. Notice how the center is open to avoid any interference with the CV bearing cage. I will post pictures of the gasket and installation process.
     
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  13. Challengerfarmer

    Challengerfarmer Silver Member

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    I'm sure your idea will solve the grease slinging problem, and I like it better too, then the plastic plugs. The problem is still there that the CV joint is exposed to the big open cavity of the transmission out put flange. Which isn't a problem either, if you fill it with extra grease. It's sorta like leaving the front wheel bearing cap off of an older car and filling the hub cap on the wheel with grease. OK, that might be a slight exaggeration. :)
     
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  14. goingsolo2

    goingsolo2 Beast will be back bigger and better than ever! Hellcat Car Club Gold Supporting Member Hellcat Supporting Vendor

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    I wonder if DSS will release a fix for this.
     
  15. sgoyal

    sgoyal Gold Member

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    Are you saying another .10 cap?
     
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