Full width Chevy axle help leaf help

Discussion in 'HardCore Corner' started by 78V8YOTA, Jan 5, 2015.

  1. 78V8YOTA

    78V8YOTA

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    Putting a spring over Dana 44 up front. Spring pad centers are 32" wide. I cant put the shackle end of my spring below the frame because it throws my caster way off. I cant outboard the mount higher up the side of the frame because the frame width is the same width I have between my springs and their isn't any room for the shackle to swing up alongside the frame. HELP, out of ideas.
     
  2. shawnfj40

    shawnfj40

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    You may have to cut and turn your knuckles to correct your caster.
     
  3. 78V8YOTA

    78V8YOTA

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    Is there no way to put Chevy axles under an FJ without cutting and turning knuckles? I know its been done. What am I missing? Who's build should I look up guys?

    If I cut and turn knuckles, my pinion is still going to be pointed at the ground.
     
  4. shawnfj40

    shawnfj40

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    It is the spring over that gets you. Even if you were using Toyota axles you would probably be in the same boat. If you cut and turn your knuckles you can point the pinion anywhere you want. The idea is to set your caster correct and then to angle the pinion in the proper orientation. If using standard u-joints it is different than using say a double cardin.
     
  5. shawnfj40

    shawnfj40

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    Any of the threads that discuss doing a SOA will work for you. Your setup will be different but the geometry will be the same.
     
  6. 78V8YOTA

    78V8YOTA

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    My spring pad is cast in so regardless of where I set my caster after a cut and turn, my pinion will still be pointed too far down
     
  7. GLTHFJ60

    GLTHFJ60 Rum Runnin' SILVER Star

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    Most Dana axles have the PS spring pad cast into the diff center section, making it significantly more difficult to do a cut and turn than on a toyota axle.

    I put a SOA D60 in the front of my FJ60 without a cut and turn. I've got a tiny bit of wander on the interstates and my intended fix will be caster plates. My build thread is below in my signature, Moonshine.
     
  8. 78V8YOTA

    78V8YOTA

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    My problem could lie in the springs im trying to use up front as they have a significant arch to them with no load, (fforward offset pin) causing my spring to point the diff downward. What springs did you use glthfj60? I assume something flatter and shorter than what I tried. I am using a 54" Dodge durango leaf that has a 10" arch to it
     
  9. GLTHFJ60

    GLTHFJ60 Rum Runnin' SILVER Star

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    I used more or less flat, stock FJ60 rear springs.

    You'll be hard pressed to get things to work with springs that have that much arch in them. That's insane man.
     
  10. 78V8YOTA

    78V8YOTA

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    GLTHFJ60 thanks for the advice. Ill see if i can get the caster closer with a flat/shorter spring
     
  11. GLTHFJ60

    GLTHFJ60 Rum Runnin' SILVER Star

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    You don't necessarily need to get a shorter spring, but flatter would help.

    FYI, the FJ60 rear springs in this picture are 48" center pin to center pin:

    [​IMG]
     
  12. 78V8YOTA

    78V8YOTA

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    If I ran shackles on the front it would be close to fixing the bad angle. I am just worried about a rough ride
     
  13. shawnfj40

    shawnfj40

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    Have you considered doing a shackle reversal at the same time That might get you in the ball park as well.
     
  14. GLTHFJ60

    GLTHFJ60 Rum Runnin' SILVER Star

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    Why are you worried about a rough ride with the shackles up front?

    Also, you were going to run springs with a 10" arch and were worried about a rough ride?

    Rough ride is more about spring rate and shackle angle than which orientation the spring is in. My ride is nice and smooth IMO.
     
  15. Mace

    Mace rock scientist.. Staff Member s-Moderator

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    So right now your shackles are in the rear? That's not the stock method. Shackles in the front is. not that each does not have it's advantages, but a shackle forward can provide the same quality ride as one in the rear of the spring.
     
  16. 78V8YOTA

    78V8YOTA

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    Yes, I was trying to put the shackles in the rear and cant get the caster angle close enough. My springs have a 10" arch but arent rated that high so they should flatten out some. Everything I have been able to find on front shackles says the ride is rougher as the tire moves forward so I was trying to avoid bumper mounted shackles
     
  17. 78V8YOTA

    78V8YOTA

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    If you think the ride would be similar, forward shackles would help correct my caster
     
  18. shawnfj40

    shawnfj40

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  19. Corwin117

    Corwin117

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    As long as your shackle angle is around 45* it should ride nicely. I have my shackles up front but i haven't been able to drive it yet.
    Im also using a Chevy D44.
     
  20. GLTHFJ60

    GLTHFJ60 Rum Runnin' SILVER Star

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    45* when fully loaded and on the suspension. If anything, you want to be shy of 45* rather than over 45*. This angle is working extremely well for me:

    [​IMG]
     
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