Another control arm thread

Discussion in 'Suspension and Brakes' started by 9838stang, Feb 25, 2014.

  1. 9838stang

    9838stang Well-Known Member

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    I am looking to upgrade from my stock rear control arms. I have been looking and looking and looking, and reading articles left and right and still am confused. My goal with the car is to have a stiffer rear end with minimal to no rear suspension noise coming from the rear control arms. My car has an 8.8 our of a 94 or 95 gt it has about 45k miles to date and the control arms are factory and have approx. 165k.

    The control arms im looking at are the

    J&M rear lca with spherical bushings

    http://www.hotpart.com/1979-1998-1999-2004-mustang-rear-lower-control-arms-for-street-race/

    UPR lca and uca
    http://www.uprproducts.com/mustang-chrome-moly-solid-lower-control-arms-urethane-bushing.html
    http://www.uprproducts.com/mustang-...table-upper-control-arm-urethane-bushing.html

    or these
    http://www.uprproducts.com/mustang-chrome-moly-rear-control-arm-suspension-kit.html

    MM
    http://www.maximummotorsports.com/Heavy-Duty-Mustang-Rear-Lower-Control-Arms-1979-1998-P498.aspx

    If i got with mm lca idk if ineed uca or even which to go with same goes for J&M

    Basically looking a stiffer, rear end feel, and get a little bit more traction in the rear, and to get rid of my quad shocks
     
  2. RichV

    RichV Well-Known Member

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    What noise are you getting now?

    I would run a set of J&M or MM box/tube LCAs with a new set of OEM uppers. You can run the quads with this setup, but prolly don't need to. I never have.
     
  3. chris91

    chris91 Well-Known Member

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    I love the J&M's on my car. I dont have the spherical bushings though. They are a MM copy I do believe. I wouldnt upgrade the Uppers. If anything just replace the bushings in them.
     
  4. Ferocious

    Ferocious Moderator Staff SN95 Supporter

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    J&M or MM lowers, either will work. OEM uppers as stated. It's pretty simple. If you're still hearing a noise afterwards, it's most likely something else.
     
  5. 9838stang

    9838stang Well-Known Member

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    basically a squeak from every bump. i have taken out my shocks greased them, greased all of the pivot points of the control arms when i installed them. after a year they started squeaking again. new rear brake caliper hardware, used anti seize one the spacers and lugs. also used lock tight on the drive shaft when it was pulled to put in the new rear end. anti seize on the rear quad shock mounts and grease on the areas where the quad shock mounts to.

    I also notice a little side to side movement if i hit a bumper (nothing bad just notice a bit of play if i hit one)
     
  6. 9838stang

    9838stang Well-Known Member

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    Also i heard the poly urethane only control arms tend to bind up... and are more intended for 1/4 mile use
     
  7. RichV

    RichV Well-Known Member

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    You can't have poly in the uppers and lowers. Lowers are good, as long as the uppers are still rubber (all 4).

    Squeaky suspension ... because Mustang. :)
     
  8. KillNThrill24

    KillNThrill24 Legend

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    Can someone explain to me what the big deal is with having poly upper and lower bushings? And tubular lower AND upper arms? I run J&M with the spherical on the lowers (highly recommend these Alan, they are awesome), and J&M uppers with poly bushings..........................
     
  9. 9838stang

    9838stang Well-Known Member

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    I cant or i shouldn't. only benefit for me if i were to go with the uppers were to have adjustable left to right movement which i dont think i will need at all.
    As far as the rear lca. j&m are a spherical at one end and poly at the other. pretty much looking to upgrade for a stiffer feel
     
  10. RichV

    RichV Well-Known Member

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    Not a big deal for straightline cars, just not ideal for turning. You'll get suspension bind and get something called snap oversteer. There's a lot of info on it, basically the soft bushings have enough slack to allow your suspension to articulate, the angles in this '4 link' (upper and lower) are designed to stop the axle from moving sideways. If the bushings are too hard there is not enough slop in the suspension to move up/down and it will bind in a corner. Then when it releases the rear end will come out on you.

    Not sure if it's making sense, but look it up. There are probably better explanations.
     
  11. Musturd

    Musturd Legend

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    I run solid bushings . What now . I have a similar setup to first set from upr you posted . Their amazing but hard core for street use . If funds allow I would look into the team z street beast kit ... But honestly your car would be great with some MM weight jackers or j&m with new diff bushings . You can always plate the bottom section of the factory uppers
     
  12. KillNThrill24

    KillNThrill24 Legend

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    I gotcha Rich that makes sense. Tho I have to admit I wrap corners on the street pretty hard sometimes and I haven't had any issues keeping traction. Maybe the spherical bushings on the lowers help.

    Kyle it's only $400 for the street beast kit. Had I known about that when I did my rear end I would have no doubt picked it up
     
  13. 9838stang

    9838stang Well-Known Member

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    Well i went with the J&M lcas for now. looking at which uca to buy now. i still dont know if i should get adjustable uppers or just get solid ones. i will also be getting axle bushings too for the uppers.... dunno which
    http://www.americanmuscle.com/jm-spherical-lca-7998.html
     
  14. Addermk2

    Addermk2 Well-Known Member

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    Read your other thread

    Sent from my CyanMobileX Evo 4G
     
  15. NicksGTR

    NicksGTR New Member

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  16. 410sn95

    410sn95 Active Member

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    As stated before. Just get some new rubber bushings for the uppers. Spend money elsewhere maybe subframe connectors if you don't have them.

    If you want to feel like your doing more you could box the uppers and paint them. It will look real nice but will whoop out your new bushings faster as you will have taken some of the flex out of the upper arms and the bushings will have to flex even more(IE. kinda a useless mod).