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King Shock Spring questions...

Discussion in 'Offroad Tech - Ask a Question any Question!' started by OutCole'd, Feb 16, 2018.

  1. OutCole'd

    OutCole'd Raging Member

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    I know my car is sprung heavy, but who do you call to find out what springs I should be running? I try calling King and they are to busy to get anyone on the phone.

    I know the weight of all four corners and total weight of my car, plus what springs i'm running now. Anyone have a contact that I can pick their brain for a few minutes to see what springs I really need?
     
  2. RiverDave

    RiverDave In it to win it

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    Shock dial in is something that has always been fascinating to me.. Wish I had an answer for you on who to call.


    Sent from my iPhone using Tapatalk
     
  3. pwerwagn

    pwerwagn Inmate #4800

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    If you can take a few simple measurements I can help you out. There are online calculators that can get you really close too.

    I’ve never had luck getting info from King on rates.

    How much spring preload are you running at full droop?
     
  4. 02HoWaRd26

    02HoWaRd26 Well-Known Member

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    Full droop preload is one thing but I’ve always gone with the ride height preload.
    What’s the corner weight of your car what angle are the shocks what spring rates are currently on there and what is your corrected preload (if spring totally unsprung is 10” top 14” lower and at ride height is 8” top 13” bottom that’s a corrected 3” preload at ride height)
     
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  5. 02HoWaRd26

    02HoWaRd26 Well-Known Member

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    Also understand dual rate vs single rate splits. 200/400 dual rate is really 150# top weight 400# bottom T+B/4=upper spring weight
     
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  6. OutCole'd

    OutCole'd Raging Member

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    Obviously I need to get more info, all I really know right now is car weights and what springs i’m currently running.
     
  7. Done-it-again

    Done-it-again Well-Known Member

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    always loved playing with springs rates. From a rhino to a buddy’s sand car. Surprising what small spring weight adjustments can make.
     
  8. pwerwagn

    pwerwagn Inmate #4800

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    Agreed on ride height preload. I’ve just messed with quite a few vehicles that people have brought me that wind up with negative preload at full droop...so it’s always an easy place to start.

    Looks like there’s enough people here that understand c/o’s that we can get you setup. ;-)
     
  9. 02HoWaRd26

    02HoWaRd26 Well-Known Member

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    Well what’s that info and a photo.
    My car is 400/600R and 200/350 front my rear needs to be dropped to about 400/550 or 400/500 as example FFE0B707-B64B-49E6-802B-33358522FAE1.jpeg
    This was when set up with no rear seats or roof rack as i was taking it to the sand but an idea of why you can do with proper tools and time E765FB48-3EE2-40FC-8A35-6E2441495D5A.jpeg
     
  10. *BN*

    *BN* Well-Known Member

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    D116827A-EF0C-47F9-8B72-084BBEF431B0.jpeg

    Brian
     
  11. OutCole'd

    OutCole'd Raging Member

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    4A292C5C-0AA3-4DCA-AD6A-148D46F721D0.jpeg 8C050DBE-FFB2-453C-9CDE-4A24E5714008.jpeg Rear shocks

    Top 3.14.350i

    Bottom 3.0-16-450


    Front shocks

    Top 3.12.300

    Bottom 3.14.350
     
  12. OutCole'd

    OutCole'd Raging Member

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    C2DE4BD2-C77A-4E65-8EB9-A6285F7149D2.jpeg F1430AF1-9EAF-43B4-B9FB-E0647EE801DF.jpeg
     
  13. 02HoWaRd26

    02HoWaRd26 Well-Known Member

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    What’s the preload? I’d buy a set of 12” 200’s put in the front upper then use the 300’s in rear but without knowing your preload it’s just a bs guess. But the coil gap looks like you have nearly no preload
     
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  14. Done-it-again

    Done-it-again Well-Known Member

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    I would agree with 02 above.
    Front shock is almost vertical so it should have light weight springs to work as the shock is at its best working condition vs laying down. The upper springs is more for ride comfort and the bottom is for the bigger stuff.
     
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  15. 02HoWaRd26

    02HoWaRd26 Well-Known Member

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    Yea my true guess would be
    150/300 F =112.5# till you hit collars =300#
    250/450 or 300/400R these will both give you a 175# ride till you get into the collars but again without preload #’s really just pure speculation
     
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  16. OutCole'd

    OutCole'd Raging Member

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    Ok, sorry for the stupid question, but how do I measure preload?
     
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  17. Done-it-again

    Done-it-again Well-Known Member

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    I’m not an expert. But preload is adjust for ride height. Anything more than the 3” of preload from the top nut to achieve your ride height, You need to go up in spring weight.
     
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  18. 02HoWaRd26

    02HoWaRd26 Well-Known Member

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    Incorrect sorry, you could simply be using too short of a spring. Has nothing to do with the shock body.

    You already stated your spring lengths based on the 3.12.300 and 3.14.350
    So top spring front is 12” static
    Bottom spring front is 14” static
    Go measure your top spring then your bottom spring while at ride height if they are 11.25 and 13.75 you have a split 1” preload if they are 10.5 and 13.5 you have a split 2” preload.
     
  19. 02HoWaRd26

    02HoWaRd26 Well-Known Member

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    Front: about 2.5” preload EA78DB39-EC8F-4613-82C9-A8B331339E33.png
    Rear: about 1.25” preload i need to go to 400/500 vs 400/600 tho to get a little more preload and soften it up a little B88F575B-E91C-47EE-B0A9-1DA26CAE6BC7.png

    Just an example of why the colar height means nothing
     
  20. Racer56

    Racer56 Well-Known Member

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    Fox does shock tuning for free at Barstow every other Wednesday. They bring a trailer full of spring's & parts. Fox will get your car dialed in an afternoon no problem.
     
  21. OutCole'd

    OutCole'd Raging Member

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    Ok, that’s easier than I thought. 10.5” front and 11.5” rear. So I have 1-1/2” preload in the front and 2-1/2” preload in the rear.

    Trying to push down on the front and you can get barely any movement, the rear you can move about an inch or maybe two.
     
  22. Done-it-again

    Done-it-again Well-Known Member

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    Wasn’t talking about collar height. Was talking about how much to turn down against the spring to achieve ride height. Once the collar is adjust to the spring then you preload to achieve ride height. If you don’t have any preload and have ride height then use less spring rate. The same goes if you need to crank down on the collar and can’t get ride height then you need a heavier spring rate. But you know this.
     
  23. 02HoWaRd26

    02HoWaRd26 Well-Known Member

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    Yes i had car tuned last year but then made changes.

    King goes out every Thursday now as well. King was Wednesday till Fox started crashing the party lol
     
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  24. 02HoWaRd26

    02HoWaRd26 Well-Known Member

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    Yes no kinda.... like my car if you remove the limit straps and jack car all the way up my springs in front are technically 1” too short thus limiting my overall front wheel travel to 21” right now but also with the IBP’s my car is set just right for flow.
    But talk to any shock tuner it solely has to do with measuring the actual springs then subtracting
     
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  25. 02HoWaRd26

    02HoWaRd26 Well-Known Member

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    You have to measure the actual upper and lower springs at static most springs aren’t exact.
    Then at ride height you gotta measure both springs upper and lower ie: front is 12+14=26 then you say your at 10.5 top so measure lower also 10.5+B=T T-O=P
     
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  26. OutCole'd

    OutCole'd Raging Member

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    Holy crap, I didn’t know I need to be a rocket surgeon to figure this out.

    What is static? I’ve always been a good motor/ electrical guy, suspension is a new thing for this old dog.
     
  27. 02HoWaRd26

    02HoWaRd26 Well-Known Member

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    Static as in the spring length while say sitting on a bench. Most are close but not exact to the stamped or printed length. But you can still use the printed length to get a static type length
     
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  28. OutCole'd

    OutCole'd Raging Member

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    Thanks, those are numbers i’ll have to work on.
     
  29. 02HoWaRd26

    02HoWaRd26 Well-Known Member

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    Well you already did your top coil on front use a tape and measure bottom real quick as well
     
  30. Ballsdeep

    Ballsdeep Well-Known Member

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    Good to know, do you have to call them up in advance and set up a time or just show up? Is it crowded?
     
  31. OutCole'd

    OutCole'd Raging Member

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    But the car is on the ground, I assume you want the numbers with no load/weight on the shock??
     
  32. 02HoWaRd26

    02HoWaRd26 Well-Known Member

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    No that is with the car sitting ready to ride at ride height.
    Your over thinking it
     
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  33. OutCole'd

    OutCole'd Raging Member

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    Ok, I have 13”in the front, and 14-1/4” in the rear.
     
  34. 02HoWaRd26

    02HoWaRd26 Well-Known Member

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    Check your pm
     
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  35. Racer56

    Racer56 Well-Known Member

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    Letting them know ahead of time and what kind of help you need, helps them assure that they have the parts you may need. If you test really close to a bitd or score race, they will be really busy. If you test in between races, they will have plenty of time for you.

     
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  36. motoxed

    motoxed Member

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    All these “book” numbers people use are just to get you in the park. They are not exact. What’s important is your car! How do you drive it? Is that an iron block? Or aluminum hangin of the back? How may people you usually run with? Are you a racer? Weekend warrior? Full dez? Dez and Dunes? Full Dunes! And who knows how your shocks are valved? They may not even be close to fit what your looking for! And Setting the spring rates does NOT Need to be exact. Again, it depends on the over all recipe used. Some tuners prefer lite side rates, while others prefer higher rate springs. Eather way, valving recipe needs to match up to spring rates Used.

    Ed
    The Suspension Guy
     
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  37. Ballsdeep

    Ballsdeep Well-Known Member

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    You need to leave your contact info Suspension Guy!!
     
  38. Chris Lapoint

    Chris Lapoint Well-Known Member

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    Here is Ed's Info, if he doesn't answer leave him a message or send a text.
    Ed Niemela - 714-343-3399

    I worked @ King Shocks in Sales/Tech for 3 years, Ed is a very knowledgeable guy and can get your car set up great.

    Here is a good site to use for some shock tech/tuning/information along with a multitude of other calculators and research.

    http://www.crawlpedia.com/
     
  39. the510

    the510 Well-Known Member

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    DC Shock service in San Dimas always does a great job! check them out.
     

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