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You guys who switched to D 30's

Discussion in 'Early CJ5 and CJ6 Tech' started by mortten, May 14, 2010.

  1. May 14, 2010
    mortten

    mortten I can’t put my finger on it 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Peninsula, Ohio
    Joined:
    Apr 17, 2006
    Messages:
    1,740
    When those of you who have put D-30's in, are you still using shims for caster increase?
     
    mortten, May 14, 2010
    #1
  2. May 14, 2010
    lynn

    lynn Time machine / Early CJ5 HR Rep Staff Member

    Huntingdon PA
    Joined:
    Sep 20, 2002
    Messages:
    3,437
    When I put the D30 in the '71, resulting caster was 1° and uncontrollable over 30 mph. I installed 5° steel shims. Ran straight and true at 70 mph.
    Those shims are still in ~10 years later, although the entire rig belongs to a buddy now.
     
    lynn, May 14, 2010
    #2
  3. May 14, 2010
    nickmil

    nickmil In mothballs.

    Happy Valley, OR
    Joined:
    Sep 23, 2002
    Messages:
    12,529
    Make sure you use steel shims! The aluminum ones tend to split down the middle and work their way out. If you can't find any contact McRuff on here. He has made them for lots of folks on this board. I should add that ideally you want around 5-7* total caster.
     
    Last edited: May 14, 2010
    nickmil, May 14, 2010
    #3
  4. May 14, 2010
    bkd

    bkd Moderator Supreme Staff Member 2022 Sponsor

    K-Town Tenn.
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    Apr 29, 2007
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    3,294
    I put the 5 degree shims I got from McRuff in mine.......made for great cruizen after that
     
    bkd, May 14, 2010
    #4
    Rust Ranger likes this.
  5. May 14, 2010
    Warloch

    Warloch Did you say Flattie??? Staff Member

    Falcon, CO
    Joined:
    Mar 4, 2003
    Messages:
    5,469
    I didn't end up needing any shims on mine - may have been the Holbrooks on it as well.
     
    Warloch, May 14, 2010
    #5
  6. May 14, 2010
    jpflat2a

    jpflat2a what's that noise?

    Hermosa, SD
    Joined:
    Jul 30, 2003
    Messages:
    8,520
    none were necessary on my flatty.
     
    jpflat2a, May 14, 2010
    #6
  7. May 14, 2010
    jeep67

    jeep67 Member

    Shasta, Ca
    Joined:
    Dec 11, 2006
    Messages:
    205
    I did not use any shims. I have a spring reversal, which may have changed the geometry.
     
    jeep67, May 14, 2010
    #7
  8. May 14, 2010
    cj6/442

    cj6/442 Sponsor

    Fallbrook, Calif
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    Feb 6, 2008
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    I used them, but I am SR also , by the way these are for sale if you deside need some jeep #941571 think they are 5* [​IMG]
     
    cj6/442, May 14, 2010
    #8
  9. May 14, 2010
    Project71-5

    Project71-5 BACON

    Gypsum, CO
    Joined:
    Sep 24, 2002
    Messages:
    897
    I use 5° steel shims that McRuff made for me. Very nice quality and very timely. The Jeep runs great even at 70 MPH.
     
    Project71-5, May 14, 2010
    #9
  10. May 14, 2010
    mortten

    mortten I can’t put my finger on it 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Peninsula, Ohio
    Joined:
    Apr 17, 2006
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    1,740
    Thanks guys. I have the shims on my 27 now. I was just checking to see if the 30 needed them also.
     
    mortten, May 14, 2010
    #10
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