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    sagging suspension

    I am having issues with my rear suspension, It sags with the addition of any amount of weight in the trunk like 70 pounds or more. whats best for a fix? coil over shocks? air shocks? or some type of stiffer springs?Click image for larger version

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ID:	1299346 see the sag?

    #2
    If you dont have load leveling air bags, I would say new springs. Unless you haul lots of weight all the time, air shocks are not nesassary.

    1981 Mercury Marquis Brougham 2-Door 302/ 5-speed -special blend (GMGT)
    1987 Lincoln Mark VII 5-speed (Errand runner)
    1989 Mercury Grand Marquis (Base Runner)
    2007 Lincoln Town Car Signature Limited (Hustlyn)
    2011 Ford Crown Victoria Police Interceptor (Down with O.P.P)

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      #3
      I do tend to run some large stereo systems in my cars, last one i had in the mercury actually caused the tires to tuck into the fenders, so i had to remove it. so improved suspension is my goal

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        #4
        So, maybe some heavy duty cargo coils are what you want, since the weight is part of the car.

        1981 Mercury Marquis Brougham 2-Door 302/ 5-speed -special blend (GMGT)
        1987 Lincoln Mark VII 5-speed (Errand runner)
        1989 Mercury Grand Marquis (Base Runner)
        2007 Lincoln Town Car Signature Limited (Hustlyn)
        2011 Ford Crown Victoria Police Interceptor (Down with O.P.P)

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          #5
          No need for air suspension. Just get some heavy duty springs. Even junk yard pulls from a P71 wouldn't be bad.

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            #6
            so air shocks= bad idea? and i feel that if i am replacing i only want new parts, so p71 springs are that much stronger? would they adversely affect my handling being stiffer out back than in front?

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              #7
              im not at all used to working on a rwd v8 platform like this, I am and always will be a die hard honda fan and builder but i love my mgm

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                #8
                I've put a few pairs of cargo coils in the rear of panthers over the years and my experience was, didn't effect the ride much, but did flatten out the car a bit on highway onramps etc.

                Just my feeling, I can't say how you'd like it. Good luck.

                Pete
                Originally posted by gadget73
                For other types of inquiry, more information is required. Please press 4 to speak to a representative who can help you with your question. This call may be monitored for quality assurance purposes.


                2003 Grand Marquis Ultimate, the "Stealth Bomber": http://www.grandmarq.net/vb/showthre...-Grand-Marquis
                1991 S-10, 'Bulldog', 2.5l 5 speed: http://www.grandmarq.net/vb/showthre...375#post698375
                1985 Town Car, 'Faded Glory', gone but not forgotten. 84/87/91/97 MGMs too.

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                  #9
                  Cargo coils as in load adjusting shocks or is there stiffer springs I am not finding listed?

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                    #10
                    Ah sorry. Old vernacular. 'Variable rate coil springs' is the correct term if'n I remembers correctly.

                    Pete
                    Originally posted by gadget73
                    For other types of inquiry, more information is required. Please press 4 to speak to a representative who can help you with your question. This call may be monitored for quality assurance purposes.


                    2003 Grand Marquis Ultimate, the "Stealth Bomber": http://www.grandmarq.net/vb/showthre...-Grand-Marquis
                    1991 S-10, 'Bulldog', 2.5l 5 speed: http://www.grandmarq.net/vb/showthre...375#post698375
                    1985 Town Car, 'Faded Glory', gone but not forgotten. 84/87/91/97 MGMs too.

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                      #11
                      I think the rear springs from 1979 to 2012 work IIRC... so you could use wagon springs (your basic cargo coils) or order up some stronger springs to fit your car. To swap them out, you just need to unbolt the shocks and lift the rear of the car until the springs pop free... then just pull to get them out if they don't just fall out. Replace with the new springs and re-attach the shocks.

                      the interchange may stop at 2002 though. I'm not real sure on that one. police spec springs are stiffer as well. you can always spec out even stiffer springs. Though, to figure out how stiff a spring you need... about how much weight are you keeping in the trunk?

                      Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
                      rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)

                      Originally posted by gadget73
                      ... and it should all work like magic and unicorns and stuff.

                      Originally posted by dmccaig
                      Overhead, some poor bastards are flying in airplanes.

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                        #12
                        If you want to haul a lot of weight, order springs for a natural gas vehicle. They are heavier to deal with the added weight of the CNG tank in the rear of the car. I believe those are the stiffest springs from the factory for these cars.
                        86 Lincoln Town Car (Galactica).
                        5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

                        91 Lincoln Mark VII LSC grandpa spec white and cranberry

                        1984 Lincoln Continental TurboDiesel - rolls coal

                        Originally posted by phayzer5
                        I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

                        Everything looks like voodoo if you don't understand how it works

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                          #13
                          I have 140 of sand in back right now, in the summer its 4 12 inch subs and a 3/4" thick MDF box and amp

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                            #14
                            so about the same weight both ways.

                            yeah... go for the CNG rear springs like gadget said.

                            Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
                            rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)

                            Originally posted by gadget73
                            ... and it should all work like magic and unicorns and stuff.

                            Originally posted by dmccaig
                            Overhead, some poor bastards are flying in airplanes.

                            Comment


                              #15
                              Any chance someone has a part number

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