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    Lowered + Handling = ?

    I currently have Billy sports and Eibach pros on my car but it isn't enough.

    As you can see from the pics it isn't low enough. My other concern is how soft it is to me, even for a daily driver. I want something I can take to the track and get good response, but still put me as low as I want to be. I just wan to close some of the wheel well gap.

    I've looked into Ground Control, but for the life of me can't understand how that works. I send them m stuff and the modify it? IDK.

    Are IE3's stiff? Vogtlands? I'm a newbie with suspension, and am just trying to do some research before I spend any more money to not be satisfied.

    Thanks in advance.


    PICS"




    #2
    Get H&R Race or IE stage 3 springs or get the coilovers if you must have ability to raise/lower the car. Yes,
    GC can modify your strut housings for the coilover kit that they sell.
    Mtech1 v8 build thread - https://www.r3vlimited.com/board/sho...d.php?t=413205



    OEM v8 manual chip or dme - https://www.r3vlimited.com/board/sho....php?p=4938827

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      #3
      Change all rubber to urethane. That will stiffen the car up big time.

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        #4
        my only problem on Eibachs and Billies was that car became very jumpy and bump-steer was most annoying. But it was incredibly comfy to DD.

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          #5
          I agree Aptyp.

          It's smooth and perfect for a DD. But I want something that won't give me 90 degree bod roll. jk.

          So how does the ground control set up work? I'd love the adjust-ability.

          New bushings are at the top of my list. I have about 5 INCHES of play in m steering wheel. That's weak.

          Are IE3's stiffer than Pro's? I don't understand the progression of spring rates.

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            #6
            There's a spring chart running around somewhere that lists the spring rates of the various E30 springs. As I recall in fixed springs the highest rates would be Turner J stock springs and IE 3 springs and H&R race came in second. Which would make them stiffer than Eibach Pro springs. Wit a true coil over suspension you can pick what ever spring rates you want. The lower you are going to run the car the higher the rate has to be to prevent bottoming out. And keep in mind that a slammed car is at constant risk of oil pan damage...

            Stiffer springs will tame some of the body roll, but for full control you'd want stiffer sway bars. Obviously if you go to stiffer springs and stiffer sways ride quality on the street will suffer. In my opinion H&R or IE 3 springs and Bilstein Sport shocks is about as far as you'll want to go on a street driven car. And they may be too much for some.
            The car makes it possible, but the driver makes it happen.
            Jim Levie, Huntsville, AL

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              #7
              Originally posted by Dirtbleed View Post
              Change all rubber to urethane. That will stiffen the car up big time.
              that has nothing to do with spring rates.
              8380 Laboratories
              M3 Champs Poster

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                #8
                i use to have billys and eibach pro kit with ST sway bars it handled really good.

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                  #9
                  IE stage 3's would be a good cheap solution and match well with your current dampers.

                  You can put the GC's on yourself if you want, or could send your strut housings in.

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                    #10
                    i DD GC springs at 300/500 with stock length billies, no shortened jazz.

                    I love it. (except for the rear but thats faulty shocks im pretty sure)

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                      #11
                      IE3/H&R race is about as stiff as you can get with off-the-shelf springs without going J-Stock which is bone-crushingly harsh for a DD.

                      Then there are sway bars. How much do you want to spend? You can get a vert front sway bar (21mm as opposed to 20 stock) for fairly cheap, which is a noticeable improvement, and the M3/ix/m-tech rear sway bar (14.5mm compared to 12mm stock) is more elusive but not that hard to find, also generally pretty cheap. Aftermarket swaybars will run you more (typically around $450 shipped) but are bigger (usually 22mm front/19mm rear) and come with new bushings, etc.

                      Looks like you've got an early model. A set of IE3s and, if you can shell out for them, some UUC swaybarbarians would do your car a whole lot of good. That paired with billy sports is the equivalent to what most of the spec E30 guys are running, so while it's not necessarily ideal, it's a pretty good setup.

                      If you can deal with modifying your strut housings and want to have a wider selection of spring rates, then by all means go for the GC kit. It's only about 30% more than the IE3s and you can adjust ride height, swap out springs for different rates etc. Personally I'm more a fan of coilovers but if you don't want to deal with hacking up your strut housings then just IE3s and sways will do wonders for you.
                      Last edited by Wh33lhop; 10-19-2009, 12:15 PM.
                      paint sucks

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                        #12
                        my freind taylor (e30_fiend) DDs jstock, since theyre progressive theyre not that bad. But its certainly not posh

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                          #13
                          Originally posted by Stephen View Post
                          my freind taylor (e30_fiend) DDs jstock, since theyre progressive theyre not that bad. But its certainly not posh
                          They really arent that bad. The JStock springs I have will be for sale soon because I am going the coilover route simply for the adjustability factor. I would like to be slammed but dont get me wrong, the JStock kit lowers it a good bit and its nice and stiff.

                          I dont mean to thread jack but since the springs WILL be for sale, if anyone is interested then shoot me a PM.

                          OP, the Pro Kit springs will NOT perform on the track. Start looking for a different set of springs and upgrade all your bushings to urethane. SImple things will do a lot not to mention I highly doubt they have been changed since they left the factory.







                          Taylor
                          Need a performance chip for you BMW? Shoot me a PM and I'll get you taken care of!!
                          Taylor- Follow me on Instagram @e30_fiend


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                            #14
                            The Hebrew Hammer? 4 srs?

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                              #15
                              It's my friend's plate. I'm not Jewish and just waiting on mine to come in.

                              For the record,



                              i understand how coilovers work. I just don't understand what is needed for the GC kit.

                              Do I just buy that an it fits over what I have? Or what modification is required? I've searched without much avail.

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