1. Registration trouble? Please use the "Contact Us" link at the bottom right corner of the page and your issue will be resolved.
    Dismiss Notice

Leaf Springs-enlighten Me

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

  1. Dec 3, 2018
    73 cj5

    73 cj5 Destroyer of Jeeps Sponsor

    Clinton, Mississippi
    Joined:
    Jan 10, 2014
    Messages:
    943
    I’d like to hear from the folks that have run YJ springs soa or sua, CJ5 springs vs the stock leaf springs. I’d also like to hear about experiences with aftermarket springs or custom. Also I’d like to hear opinions and concerns with said spring you’ve had dealings with.
     
  2. Dec 3, 2018
    timgr

    timgr Jeepin' Nerd Sponsor

    Medford Mass USA
    Joined:
    Aug 10, 2003
    Messages:
    19,156
    You'd probably get more responses in the Intermediate forum, assuming this is for your '73.
     
  3. Dec 3, 2018
    tarry99

    tarry99 Member Sponsor

    Northern California
    Joined:
    Oct 29, 2012
    Messages:
    3,598
    Simply........what are you looking for in a leaf Spring? Ride , Lift , Articulation...........all of the above???

    A wider , flatter ( in arc ) and longer spring such as a YJ will decrease the frequency rate to increase comfort..........

    I believe your 73 has 2" wide springs up front and 3" wide in the back?........OEM Jeep springs are designed primarily to hold the vehicle at the proper ride height........and that in itself leaves the term comfort to another vehicle................Custom leaf springs can be had by Deaver in So Cal and Alcan in Colorado........They can bridge most of the gaps mentioned above although lift is hard to equate in the same sentence as Comfort...............be prepared to first axle weigh your vehicle with all the weight you would normally carry.
     
  4. Dec 3, 2018
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member Sponsor

    Denver, CO
    Joined:
    Jul 18, 2013
    Messages:
    1,678
    I am guessing this could be for Noah's flatfender - I believe he picked up a 46 cj2a
    46 Cj2a
     
  5. Dec 3, 2018
    73 cj5

    73 cj5 Destroyer of Jeeps Sponsor

    Clinton, Mississippi
    Joined:
    Jan 10, 2014
    Messages:
    943
    This is for the 3B. I’m starting to do work to the axles and frame so I’ll need springs soon. I’m looking for articulation and ride. I’m going to run a d25/d44 for now.
     
  6. Dec 3, 2018
    Glenn

    Glenn Kinda grumpy old man Staff Member Sponsor

    Apopka, Fl
    Joined:
    Sep 21, 2002
    Messages:
    8,249
    I like 2.5" lift springs for the stability, less lean when cornering for example.
     
  7. Dec 3, 2018
    Keys5a

    Keys5a Sponsor Sponsor

    Joined:
    Jan 23, 2014
    Messages:
    1,710
    I know I am in the minority, but the original springs that came factory on the Tuxedo Park were the best combination for stock-length springs. They were 2-stage, 6 leaf up front, and 5 leaf in the rear. Later '60s CJ5's with light suspension used the same rear 2-stage springs for a few more years. Tuxes had relatively soft/flexy 3 or 4 main leaves, with 2 flat heavy "overload" short leaves.
    Normally, you rode on the soft flexy springs, and harder cornering or heavy deflection brought the flat leaves into play.
    The Tux articulated quite well, and rode better than any other contemporary Jeep.
    I'd like to find a set of these in decent condition, as my originals from '65 are long gone!
    -Donny
     
    ojgrsoi, 1967 CJ5A and Bowbender like this.
  8. Dec 3, 2018
    sterlclan

    sterlclan Member Sponsor

    exploring the...
    Joined:
    Feb 21, 2009
    Messages:
    2,613
    Love my bds running them on the 74 had them on a yj.
     
  9. Dec 3, 2018
    timgr

    timgr Jeepin' Nerd Sponsor

    Medford Mass USA
    Joined:
    Aug 10, 2003
    Messages:
    19,156
    I gave a pair of those 5-leaf rear springs to Chuck, who may still have them. They came as standard equipment on the intermediate CJs.

    CJ6Springs2.jpg

    I recall they are currently being offered as replacement springs, DAYTON 97369.
     
    Last edited: Dec 3, 2018
  10. Dec 3, 2018
    duffer

    duffer Rodent Power Sponsor

    Bozeman, MT
    Joined:
    Sep 17, 2009
    Messages:
    2,395
    I ran 2.5" Rancho springs on my B for probably close to 3 decades. A lot of people think the ride is a bit hash, but they were so much better than the stock springs that there wasn't really any comparison. They are a little stiff and I had wheels in the air on rocks all the time. But with 4 leaves, you gain significant ground clearance under the spring plates compared to the stock springs, assuming you are still spring under. And those springs never did acquire a Jeep lean.

    I removed them to install the Holbrooks and am having a few second thoughts on those. The hardware supplied with Holbrooks is in short, crap. The frame hangers appear to be Omix and are 3/16" instead of the 1/4" thickness of the stock ones. Even the mounting holes are askew of being perpendicular to the spring bolt bores. The supplied 9/16" bolts leave about a third of the poly? bushings seated on threads. Good luck with the longevity of that. I replaced all the hardware except the hangers.

    Then there is the "military wrap". It was not centered on the main leaf ends in any of the 4 springs and, in fact, was warped laterally so it was the contact with the hangers and shackles on one side or the other making the package an 1/8 to 1/4" wider than 1.75". I carefully ground the excess off but that isn't something I expect to have to do with a "premium" spring package. Omix maybe.
     
  11. Dec 3, 2018
    tarry99

    tarry99 Member Sponsor

    Northern California
    Joined:
    Oct 29, 2012
    Messages:
    3,598
    They must have changed their spring supplier.......at one time it was a company in Portland I believe that was making the springs and parts..........The last set I bought was nice stuff.
     
  12. Dec 3, 2018
    mike starck

    mike starck Sponsor Sponsor

    salem,oregon
    Joined:
    Jun 22, 2006
    Messages:
    492
    from what I see on the inter web Benz Spring moved .Seems there located about 2 miles from my house. NIKMIL may know something.I haven't talk to Ed Holbrook in a couple years. As you said always quality product.
     
  13. Dec 4, 2018
    duffer

    duffer Rodent Power Sponsor

    Bozeman, MT
    Joined:
    Sep 17, 2009
    Messages:
    2,395
    [​IMG]

    [​IMG]

    I welded the plate on the bottom of the spring hanger. Wanted to spread the loading out and also be wide enough to weld to the box plating on the inside and 1/4" plate on the outside of the frame rails.
    [​IMG]
     
  14. Dec 4, 2018
    ITLKSEZ

    ITLKSEZ Volvophilic

    Post Falls, ID
    Joined:
    Aug 13, 2015
    Messages:
    2,325
    What ratio of 'road use' to 'trail use'?
    And how hardcore are the trails it will actually see? What size tires?

    The best articulation and ride will be the biggest headache on the street. The best scenario is a flexy setup with detachable swaybars.

    I'm a fan of SOA Wrangler springs, but even when done with as little lift as possible, you'll still end up with around 6" of lift minimum.
     
  15. Dec 4, 2018
    tarry99

    tarry99 Member Sponsor

    Northern California
    Joined:
    Oct 29, 2012
    Messages:
    3,598
    John, Looks like those springs missed the QC department on the way out........did you check the label on the box as to where they were shipped from?

    The Holbrooks are pretty good guys and been playing with Jeeps for decades.............I would send them a picture of those springs.......as some almost look to wide to fit in the hanger?
     
  16. Dec 4, 2018
    73 cj5

    73 cj5 Destroyer of Jeeps Sponsor

    Clinton, Mississippi
    Joined:
    Jan 10, 2014
    Messages:
    943
    75 Trail/ 25 street
    Rough trails. some rocks, washouts, washboard roads. "Drive it like I stole it" 32-33" tire minimum.
    I plan on running saginaw or ford steering. I'll attempt to make a cage for it.
     
  17. Dec 4, 2018
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member Sponsor

    Denver, CO
    Joined:
    Jul 18, 2013
    Messages:
    1,678
    Would the ecj5 BDS 2.5" kit work with minimal modification on a 3b?
     
  18. Dec 4, 2018
    73 cj5

    73 cj5 Destroyer of Jeeps Sponsor

    Clinton, Mississippi
    Joined:
    Jan 10, 2014
    Messages:
    943
    Frame spring mount relocation. :shrug:

    Factory spring specs

    2a/3a/3b

    Front Length 36 1/4
    Rear Length 42

    ECJ5

    Front Length 39 5/8
    Rear Length 46 1/8
     
  19. Dec 4, 2018
    Sierra Bum

    Sierra Bum Member

    The High Sierra
    Joined:
    Oct 23, 2017
    Messages:
    129
    My understanding is that the ECJ5 rear springs are too long for the the flat fender frame without extending it (rears on front or rear). I've run ECJ5 rears on the front of an ECJ5 with good success. I plan to do it with my current rig because I have the springs. Takes a little work.

    On the other hand, people run the 41-42" flatfender rear springs front and rear on a flatty frame. That's gets you longer springs in the front. I've seen a thread or two on the CJ2A page about this.
     
  20. Dec 4, 2018
    jeepermc

    jeepermc Member

    Western WA
    Joined:
    May 25, 2011
    Messages:
    887
    I always heard leaf springs were for poor people. That's about all I have to offer.... Although, I do have YJ springs on a couple flatties. They work pretty well, but you do have to add a bit to the front of the frame.
     

Share This Page

New Posts