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Serious Off Road Suspension

Discussion in 'Early CJ5 and CJ6 Tech' started by shaun, Sep 25, 2016.

  1. Sep 26, 2016
    Chilly

    Chilly Active Member

    Joined:
    Mar 12, 2007
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    1,486
    A D30 with upgraded alloy axle shafts and larger outer U-joints is a decently tough axle.
     
  2. Sep 26, 2016
    zila

    zila I throw poop

    Rock Springs,...
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    Oct 6, 2003
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    1,201
    I found the stock D30 in my 75 to be flexy. I had R&P Axle build me a D44 the correct length nd added disk brakes at the same time.. I also installed a 2-1/2 " BDS LIFT.. I am toying with the idea of swapping in a YJ spring set up. I am real tired of the lumber wagon suspension. Runnin 33X10.50
     
  3. Sep 27, 2016
    scott milliner

    scott milliner Master Fabricator

    Seattle Wa.
    Joined:
    Dec 17, 2002
    Messages:
    2,362
    Old Man Emu YJ Springs are the best Serious Off Road Suspension in my opinion. Very Soft ride.
     
  4. Sep 27, 2016
    shaun

    shaun Member

    Lebanon, Ohio
    Joined:
    Oct 15, 2015
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    390
    Think I'll stick with the 27 and think about the shims. The 3cm clearance for drag linkage is what's tapping the springs so a shim may work
     
  5. Sep 27, 2016
    montanacj

    montanacj Member

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    Scott was there any fabrication involved? I saw a kit online from some rocky road I believe and it look like you had to drill some holes and that was about it. I'll look around on this board too but just wanted to get your opinion. as far as I understand it the stock cj5 leafspring mounts are too narrow and the forward leaf spring shackle needs to move forward a smidge?
    Thanks

    Edit:
    here is a link to the rocky road kit, are there other kits out there and or did you fabricate your own. Thanks
    YJ Spring Conversion: 1955-1975 CJ to YJ Spring Conversion
     
  6. Sep 27, 2016
    oddfirejeeper

    oddfirejeeper Active Member

    Hamilton, MI
    Joined:
    May 5, 2004
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    that was the kit he used i believe
     
  7. Sep 27, 2016
    zila

    zila I throw poop

    Rock Springs,...
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    This is the kit I have been looking at.. I called and talked to em last year.. Just do not have the coins right now. Besides this knee surgery is puttin the dampers on most everything. I just had my son measure the tie rod and drag link clearance. ~ 2" from spring to bottom of draglink and tie rod.
     
  8. Sep 28, 2016
    scott milliner

    scott milliner Master Fabricator

    Seattle Wa.
    Joined:
    Dec 17, 2002
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    I used their kit. Just make sure you use the heavy duty spring. Medium duty is to soft in the front.

    I didn't modify the spring mounts on the axles. I just bolted on the new springs with their spring plates. I also welded the spring mounts after I bolted the wider ones on.

    My conversion here.
    YJ Spring Conversion.
     
    Last edited: Sep 28, 2016
  9. Sep 28, 2016
    zila

    zila I throw poop

    Rock Springs,...
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    Where did you weld the spring pads at?? Mine are already welded to the axle tube? Does Rocky Road recommend using the existing spring pads?
     
  10. Sep 28, 2016
    montanacj

    montanacj Member

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    P
    Thanks for the link to your conversion very helpful.
     
  11. Sep 29, 2016
    scott milliner

    scott milliner Master Fabricator

    Seattle Wa.
    Joined:
    Dec 17, 2002
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    2,362
    Existing spring pads: I don't see any problems using the original pads. I've been running these springs for two years now with no problems.
     
  12. Oct 5, 2016
    fhoehle

    fhoehle Sponsor

    Harford Township, PA
    Joined:
    Apr 11, 2012
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    1,428
    I run 33 10.50 15 bfgs on my CJ6. I have a BDS suspension 2 1/2 inch lift that I like, good ride and flexy. I run a dana 44 front, but I don't need it, a Dana 30 is more than adequate. A dana 27 is good for most applications. Dont be caught up in all the hype of the mags saying you need a dana 60 or 44 or full width axles to be a serious off roader. Stock Jeeps have been in the backcountry and in the war zones for a long time. Its fun to modify them and make them unstoppable so the choice is yours, enjoy it and have fun and good luck!
     
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