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Spring Compression

Discussion in 'Early CJ5 and CJ6 Tech' started by Krowey, Feb 4, 2021.

  1. Krowey

    Krowey New Member

    Does anyone have a good measurement or guess how much the factory springs compress from a relaxed state to vehicle weight? I figure about 1” to 1 1/2” at most. Sound about right?
     
  2. Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    That will depend on the spring pack- there were various configurations used. I suspect the heavy duty ones don't compress very much.

    [​IMG] [​IMG]

    [​IMG] [​IMG]
     
  3. PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    This. Some are darn near rigid.
     
    Rick Whitson likes this.
  4. Krowey

    Krowey New Member

    Thanks Howard...I have 12 in the front & 13 in the rear. They are definitely heavy duty, looks like something off of a Kenworth. I can’t imagine the springs would compress anymore than an 1” with the Jeeps weight on them.
     
  5. Keys5a

    Keys5a Sponsor

    Yes, I have a Willys Wagon with the super heavy duty rear springs, 16 leaves (I just counted!). I have never been able to get any flex except the tire sidewall.
    -Donny
     
    Last edited: Feb 5, 2021
  6. Rick Whitson

    Rick Whitson Detroit Area 2024 Sponsor 2022 Sponsor

    I have always wondered why so many thin leaves? The Rancho's I used are too stiff, thicker leaves. I think I am going to change them, I would like a better ride, spills my drink.
     
  7. Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    Just curious- why the concern?
     
  8. Krowey

    Krowey New Member

    Really no concern, just trying to get a grasp on which direction I want to take, as my springs are needing replaced soon.
     
  9. Tom_Hartz

    Tom_Hartz Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Thinner leafs flex better than thick ones. Think about bending a piece of metal with your hands. Now the key is to get the right amount of leafs to support the load needed and reduce the friction between them. Look at a set of high quality off road race springs.
     
  10. Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    So are you thinking stock, a few inches lift for larger tires, extra flex for rock crawling ... ?
     
  11. Glenn

    Glenn Kinda grumpy old man Staff Member

    :lol: You need a cup with a lid. :)
     
    PeteL likes this.
  12. PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    144525314_440507380481931_8306901666518237960_n.jpg
     
  13. Jrobz23

    Jrobz23 Member

  14. Krowey

    Krowey New Member

    I do a lot of fishing the high lakes, so mostly old logging roads, some basically animal trails. Just looking for a better ride & trying not to beat myself or the Jeep up anymore. I was looking at yj springs as an option & trying to figure ride height with the stock yj springs or if I want a little more lift for a little bigger tire.
     
  15. jeepdaddy2000

    jeepdaddy2000 Active Member

    My Ren II came with retarded leaf packs. I started by removing a couple in each pack in an attempt to soften the ride. In the end I wound up with a Rancho 2.5 lift that rode light years better than the stock units.
    If you are looking for a softer ride, I would suggest this with a set of the cheapest automobile shocks you can find. Add lowering your tire pressures a tad and you may find the ride acceptable without any real modifications.
     
  16. Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    I had heavy duty spring packs, I took out a few leaves from each & the difference was amazing.
     
  17. Krowey

    Krowey New Member

    I’m probably going to experiment with removing some leafs before I get to excited about making drastic changes.
     
  18. jeep2003

    jeep2003 Well-Known Member

    i took out 3 leafs in the front of my 2a which lowered it some and made it ride much better. Later added one back in the driver side because it had some lean. But its also a spring over so it may be too low for you. Also make sure your shocks arnt too stiff. Get some that compress easily by hand and stiffer on rebound. Anyway dont be afraid to experiment with what youve got because chances are buying new parts will bring on problems of their own.