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Leaf Springs-enlighten Me

Discussion in 'Flat Fender Tech' started by 73 cj5, Dec 3, 2018.

  1. Dec 10, 2018
    tarry99

    tarry99 Member

    Northern California
    Joined:
    Oct 29, 2012
    Messages:
    3,784
    YES , and as you mentioned ...............as long as the spring perches are part of the remodel. I've used several OEM offset center bolts springs and had some custom ones built by Deaver to accomplish different spring rates but mostly for the rear.............Although they can add some interesting effects to ride at either end...............just be mindful as it may also change your caster and pinion angles......... at either end..
     
  2. Dec 11, 2018
    Keys5a

    Keys5a Sponsor

    Florida Keys
    Joined:
    Jan 23, 2014
    Messages:
    4,188
    My '66 already has a shackle reversal, and extended about 2" forward of the stock location. The reversal already make some different effects, but not bad, just different. The rearward pivot of the front spring will need to be fabricated, so my plan was to set that height to give about 5-6 degrees caster.
    -Donny
     
    tarry99 likes this.
  3. Dec 11, 2018
    ITLKSEZ

    ITLKSEZ Hope for the best, prepare for the worst

    Spokane Valley, WA
    Joined:
    Aug 13, 2015
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    6,674
    In my experience, those flat overload springs are horrendous rock grabbers (and ugly!). Because you'd be mounting them up front where the weight won't change much with load, you would probably be fine deleting them.
     
  4. Dec 12, 2018
    jeepermc

    jeepermc Active Member

    Western WA
    Joined:
    May 25, 2011
    Messages:
    1,192
    See this thread- 1948 Cj2a- Labor Of Love

    You can also check out my Perkins CJ6 thread. New Perkins CJ-6 We only had to replace from the crossmember forward on that one. At this point, I wouldn't do it any other way than full replacement if you want it to last long term.
     
    Last edited: Dec 12, 2018
    73 cj5 likes this.
  5. Dec 12, 2018
    73 cj5

    73 cj5 Not ready for the junkyard yet

    Clinton, Mississippi
    Joined:
    Jan 10, 2014
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    2,143
    I plan to do what you did on the CJ6. Just lop off the frame after some measuring and I have to extend it a few inches aswell to fit the YJ springs.
     
  6. Dec 13, 2018
    jeepermc

    jeepermc Active Member

    Western WA
    Joined:
    May 25, 2011
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    1,192
    You won't regret it. You get a really clean look, and you won't have to worry about that section again.
     
  7. Dec 18, 2018
    ITLKSEZ

    ITLKSEZ Hope for the best, prepare for the worst

    Spokane Valley, WA
    Joined:
    Aug 13, 2015
    Messages:
    6,674
    Found a better flex pic taken a few seconds before the other pic I posted.

    [​IMG]
     
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  8. Dec 18, 2018
    73 cj5

    73 cj5 Not ready for the junkyard yet

    Clinton, Mississippi
    Joined:
    Jan 10, 2014
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    2,143
    Show off :p
     
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  9. Dec 19, 2018
    fhoehle

    fhoehle Sponsor

    Harford Township, PA
    Joined:
    Apr 11, 2012
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    1,427
    I have had excellent service from my BDS springs so far on my CJ6. They also have an excellent warranty. I drive it a lot, as long as the salt is not on the road. They flex well off road and handle well on road.
     
    sterlclan likes this.
  10. Dec 22, 2018
    sterlclan

    sterlclan Member 2022 Sponsor

    exploring the...
    Joined:
    Feb 21, 2009
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    3,883
    the bds 2.5 springs settle into about a stock height after a little use, flex nice and don't ride too bad either.
     
  11. Dec 24, 2018
    fhoehle

    fhoehle Sponsor

    Harford Township, PA
    Joined:
    Apr 11, 2012
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    1,427
    I thought it was the weight of my Jeep flattening them out more (4000+ lbs). I guess it would be around a stock "good" arch to my BDS springs now. Guess it is not just mine.
     
  12. Jan 12, 2019
    a3dhunter

    a3dhunter New Member

    Joined:
    Jul 8, 2015
    Messages:
    7
    I'm running bds 3.5" yj springs on my cj3b and 37" tires. I modified the rear fender opening and extended the wheelbase to 85". Total frame length is 130".

    [​IMG][/URL]
     
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  13. Jan 12, 2019
    a3dhunter

    a3dhunter New Member

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    Jul 8, 2015
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  14. Feb 2, 2019
    70cj5134f

    70cj5134f Member

    East Tn
    Joined:
    Aug 18, 2018
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    749
    Love my YJ conversion. RC, 2in lift, with the short spring removed.
    Great off road, can fly through the cow tromped farm lanes. Nice flex.
    But on road manners are a bit scary , in the curves.
    90 % off road, 10% ,on road.
    If i used it much more ,(over 35-40mph, id have to build anti sway bars with disconnects.
     
  15. Apr 25, 2021
    73 cj5

    73 cj5 Not ready for the junkyard yet

    Clinton, Mississippi
    Joined:
    Jan 10, 2014
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    2,143
    Thought I'd update this. I bought a set of junkyard YJ springs for $100. I pulled a couple of leaves out of a couple spring packs to make them all match. I don't notice sway or poor handling. It's a somewhat firm ride but a significant improvement over stock leaf springs. They took a broken road pretty good at 45mph and after the front tires landed back on the ground it was still going straight. o_O

    I found somewhere to test the articulation. I'm sure there was a little more left before a tire left the ground. (These EEBrakes work really good btw.)

    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]

    It's close but not touching.

    [​IMG]
     
  16. Apr 27, 2021
    Mr Vaughan

    Mr Vaughan

    i had that exact thing happen, but in less severe conditions. just trying to get up a stump, and the stupid thing folded up.
     
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