PP2 Swaybar Data: Anyone Have It?

Discussion in 'Suspension, Brakes & Chassis' started by Roadway 5.0, May 13, 2019.

  1. Roadway 5.0

    Roadway 5.0 Strassejager

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    Does anyone here know the diameters and rates of the PP2 front and rear anti-roll bars? If so, please share, thanks.

    Edit: While we’re at it, does anyone have the spring rates as well?
     
  2. TrackBred

    TrackBred Active Member

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    2018-Ford-Mustang-GT-Performance-Pack-2-01.jpg
     
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  3. Ron

    Ron Well-Known Member

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    OK, no stack of bibles here, but my online research (which Al Gore says is ALWAYS correct cuz he invented it) shows the PP2 springs are rated @ 198 lbs (F) & 823 lbs (R). As an FYI, the PP1 springs are rated @ 165 lbs (F) & 728 lbs (R).
     
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  4. BmacIL

    BmacIL Enginerd

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    Just curious, where did you find this? Not disputing it, just would like to know.
     
  5. PoppinJ

    PoppinJ Well-Known Member

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    I've always been curious what the Ford track Pack spring g rates are. It's not on the sticky for spring rates, but neither is the PP2 stuff.
     
  6. OP
    OP
    Roadway 5.0

    Roadway 5.0 Strassejager

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    I’m guessing he worked this from the Car & Driver article (I believe) that stated a 20% increase for front springs and a 13% increase for the rear springs from the PP1. Math works out exactly (with a sprinkle of rounding).

    I can’t pull up C&D here in Germany, but CJ’s posted the same numbers in their article here:

    https://www.cjponyparts.com/resources/2018-mustang-gt-performance-package-level-2

    They also mention swaybars for the PP2 being 12% stiffer in the front and 67% stiffer in the rear.

    ———- Break ———-

    Is anyone with a PP2 willing to take a few measurements of their swaybars?
     
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  7. BlownGP

    BlownGP Well-Known Member

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    So rear PP2 bar is the same diameter as the GT350?
     
  8. BmacIL

    BmacIL Enginerd

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    ^^
     
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  9. BlownGP

    BlownGP Well-Known Member

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    Ok, ..

    Wonder if it's cheap than the 350R bars since they just doubled in the price. Unless they use the same part number.
     
  10. BmacIL

    BmacIL Enginerd

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    I've not yet been able to find the PP2 service part # to order. Probably have to contact Levittown.
     
  11. BlownGP

    BlownGP Well-Known Member

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    Probably so
     
  12. BmacIL

    BmacIL Enginerd

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    Correction....
    JR3Z 5A772 A and
    F2GZ-5493-C (bushings)
     
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  13. BlownGP

    BlownGP Well-Known Member

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    Thanks

    So you think this is the same bar as the GT350R? Just without the 8mm shorter arms?

    It is cheaper, about $70 compared to the GT350R which is now $130.

    Seems like a good deal.
     
  14. BmacIL

    BmacIL Enginerd

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    Agreed!
     
  15. OP
    OP
    Roadway 5.0

    Roadway 5.0 Strassejager

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    Is the 350R bar also solid like the PP2?
     
  16. OP
    OP
    Roadway 5.0

    Roadway 5.0 Strassejager

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    24mm DIA x 3.6mm wall (0.94 x 0.14 in ) with 8mm (0.31 in) shorter

    ^^^Pulled this from the GT350 vs GT350R thread and answered my own question.

    So long as the above data is true, and the lever arm length is constant, this would make the PP2 solid rear bar significantly stiffer than the GT350R’s, no? Even with the R bar 8mm shorter (and is this shorter at the mounting points?), a 34mm bar completely solid should trump this I would think.
     
  17. Ron

    Ron Well-Known Member

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    You are correct. Tho I prefer 'reverse engineering' v. the highly technical term ... 'sprinkle of rounding'. :sunglasses:
     
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  18. BmacIL

    BmacIL Enginerd

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    Stiffer, yeah, but probably not as much as you'd think. Bar torsional stiffness is primarily a function of the diameter^4. When you have a tube it's a function of OD^4-ID^4.
     
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  19. BlownGP

    BlownGP Well-Known Member

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    The way I look at this is it would be splitting hairs.
    Unless you track the bars back to back. Would anybody notice a difference?
     
  20. OP
    OP
    Roadway 5.0

    Roadway 5.0 Strassejager

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    Wow, you weren’t kidding. I just ran some generic numbers in the Fred Puhl calculator and the difference between a 3.6mm tube and solid was less than 1 lb/in with an array of arm and bar lengths.

    It surprises me that more manufacturers don’t use a solid bar; it weighs a bit more but must be much cheaper to manufacture.
     
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