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racing dynamics green spring rates???

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    racing dynamics green spring rates???

    just picked up a set and cant find the spring rates/drop anywhere? there the old real ones,n green...
    Last edited by j0nny5; 08-05-2010, 06:42 AM.

    #2
    I've been told they are very similar to H&R Sport. Sorry, that's the most info I can give!
    BimmerHeads
    Classic BMW Specialists
    Santa Clarita, CA

    www.BimmerHeads.com

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      #3
      thanks, cuz thats more info than i could find!

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        #4
        i used to have a set on my old e30 , i loved them , similar to bavarian auto and h&r sports . if you don't like them after you put them on , let me know .
        sigpic
        mods: just meat and potatoes under the hood and wheaties on fire out back ;)

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          #5
          I picked up a NOS set of front springs from Racing Dynamics. They are all out of rears. I did a very unscientific press-down comparison with my H&R OE Sports, and they seem to be slightly more firm. As you can see in the pic, they are slightly lower. I'm going to pair them with blue H&R cab rear springs for hopefully a 1.25" to 1.5" drop for my vert.

          H&R (gray) vs. Racing Dynamics (green)



          Racing Dynamics front springs (green) and H&R vert rear springs (blue)

          Last edited by robrez; 08-16-2010, 02:24 PM.
          sigpic
          January 2012 COTM

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            #6
            Back from the dead!

            Just curious over the past 8 years if anyone has found out any further details about the comparison between the green RD's and H&R Sports. I've been running used vert RD's with new Koni Yellow Adjustable Sports (86 2277 Sport) for the past two years (which is only about 2k miles in total)

            Recently, my front end is getting real bad and rough- I'm thinking with the s52 and these RD's being god only how old and used- are finally losing their original spring rates. I'd prefer to upgrade to H&R's but really want to make sure that if I do switch over, that i'm not going any softer than what I have now. I have H&R Sports on my red coupe and they work great with Koni Yellow Adjustables

            These RD's are really hard to get any solid information on, curious if anyone has been through the same switch or vice versa and what they noticed in differences.


            555Garage - Kingston, PA

            '13 BMW e70 X5 35d
            '95 BMW e34 525i
            '92 BMW e30 325i S52 Vert (Quade the Vert)
            '92 Range Rover Classic
            '90 Range Rover Classic
            '89 BMW e30 325i Coupe (The DIRTY30)
            '81 VW MK1 Rabbit Caddy Diesel
            '76 Honda CB550K Cafe/Brat
            '67 Pontiac LeMans
            '24 Model T Depot Hack
            ....And a bunch of Motobecane, Puch, Garelli, Batavus and Honda 49cc-78cc Mopeds...

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              #7
              Can't help you on the feel part, but you can calculate the rate here:

              Spring rate, also known as spring constant, is the constant amount of force it takes a compression or extension spring to travel a proportionate amount of distance. The unit of measurement of rate is, lbf/in, which stands for pounds of force per inch.

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