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Big lift guys- who's had their knuckles turned/rotated?

Discussion in 'The Garage' started by COCHEV, Nov 16, 2003.

  1. COCHEV

    COCHEV 1/2 ton status

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    Big lift guys- who\'s had their knuckles turned/rotated?

    if you have, did you do it yourself or farm it out? price range? i've read that the hardest part of doing it yourself is getting the old knuckles off. grinder and a BFH. post up if you've done it and if it was worth it. thanks,

    jason
     
  2. Muddytazz

    Muddytazz 1 ton status

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    Re: Big lift guys- who\'s had their knuckles turned?

    Stupid question here, but what do you mean by having your knuckles turned /forums/images/graemlins/confused.gif /forums/images/graemlins/thinking.gif
     
  3. heavy4x4

    heavy4x4 1/2 ton status

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    Re: Big lift guys- who\'s had their knuckles turned?

    The welds holding the knuckles to the axletubes are ground off and the knuckles are rotated to gain optimal pinion angle, then rewelded on.
     
  4. COCHEV

    COCHEV 1/2 ton status

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    Re: Big lift guys- who\'s had their knuckles turned?

    steering knuckles turned on the axle so you can point the pinion at the t case and still retain correct steering geometry. knew some guys here in town a few years back who did this. they where running 10"+ lifts and dana 60s with cross over and turned knuckles. seemed pretty slick.
     
  5. Muddytazz

    Muddytazz 1 ton status

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    Re: Big lift guys- who\'s had their knuckles turned?

    Ah ok, I know what you mean know, just having an everyday brain fart and couldn't put 2 and 2 together /forums/images/graemlins/blush.gif /forums/images/graemlins/rotfl.gif /forums/images/graemlins/rotfl.gif /forums/images/graemlins/rotfl.gif
     
  6. COCHEV

    COCHEV 1/2 ton status

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    Re: Big lift guys- who\'s had their knuckles turned?

    [ QUOTE ]
    Ah ok, I know what you mean know, just having an everyday brain fart and couldn't put 2 and 2 together


    [/ QUOTE ]
    Duh! everyone knows 2 and 2 is 5! sheesh!

    /forums/images/graemlins/rotfl.gif /forums/images/graemlins/rotfl.gif /forums/images/graemlins/rotfl.gif
     
  7. Eric M.

    Eric M. 1/2 ton status

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    Re: Big lift guys- who\'s had their knuckles turned?

    I've always heard this was a good way to wreck pinion berings. The pinion is turned up too high to get proper lubrication. I've heard of (but never seen) sump pump set ups to pump the gear oil up to the pinion. Also, there are manufactures who make center sections which lube well at high angles ... but then you are getting into a whole new dif.

    Eric M.
     
  8. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

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    Re: Big lift guys- who\'s had their knuckles turned?

    oh, ok... when someone says "i turned [insert part name here]" that says to me that they machined it like when you get rotors turned. cutting/rotating knuckles is what I'd call what ur talkin about.

    j

    ps: pad that post count... lol
     
  9. COCHEV

    COCHEV 1/2 ton status

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    Re: Big lift guys- who\'s had their knuckles turned?

    corrected /forums/images/graemlins/wink.gif /forums/images/graemlins/thumb.gif
     
  10. thatK30guy

    thatK30guy 1 ton status Premium Member

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    Re: Big lift guys- who\'s had their knuckles turned?

    I first learned and heard about this method back in the mid-80's when I was a teenager. I was reading about Fly-N-Hi Offroad Center in Arizona doing the method what they call "cut and turn", which loosely translated is what it means. /forums/images/graemlins/thinking.gif
     
  11. Bubba Ray Boudreaux

    Bubba Ray Boudreaux 1 ton status

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    Re: Big lift guys- who\'s had their knuckles turned?

    It's also a trick when setting up a TTB diff up for the desert..................
     
  12. cybrfire

    cybrfire 1 ton status Vendor GMOTM Winner

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    Re: Big lift guys- who\'s had their knuckles turned/rotated?

    Don't forget about the spring perch that is cast into the diff housing. What would you do to fix that?
     
  13. Bubba Ray Boudreaux

    Bubba Ray Boudreaux 1 ton status

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    Re: Big lift guys- who\'s had their knuckles turned/rotated?

    [ QUOTE ]
    Don't forget about the spring perch that is cast into the diff housing. What would you do to fix that?

    [/ QUOTE ]

    Shim it? /forums/images/graemlins/confused.gif
     
  14. COCHEV

    COCHEV 1/2 ton status

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    Re: Big lift guys- who\'s had their knuckles turned/rotated?

    i guess it would depend on if you wanted to go beyond what shims you could get. whats the biggest shim they sell? 4 degrees? 6?
     
  15. yellowK20

    yellowK20 Well Lubricated Premium Member GMOTM Winner

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    Re: Big lift guys- who\'s had their knuckles turned/rotated?

    AZ-kickin sells 8-degree Zerorates
     
  16. ben427

    ben427 1/2 ton status

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    Re: Big lift guys- who\'s had their knuckles turned/rotated?

    If a shop does it they usually mill it down.
     
  17. unclematty

    unclematty 1/2 ton status

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    Re: Big lift guys- who\'s had their knuckles turned/rotated?

    OK guys, I've done allthat you talked about in this thread. On my d44 closed knuckle I had the ball ends cut off , rotated the diff 12 degrees, ball ends welded back on, pumpkin perch ground off,(using a giant industrial belt sander, and new perches welded back on. made anew steering knuckle to fit the right side to accept crossover steering arm and replaced those tiny studs that held the spindle onwith the bolts from a d60. by the way also had a spool installed in it at the same time all for under 350.00 beat that. if you need info on who what and where let me know I'll pass it along <font color="green"> </font> /forums/images/graemlins/peace.gif
     
  18. m j

    m j 1/2 ton status

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    Re: Big lift guys- who\'s had their knuckles turned/rotated?

    shimming is a problem on the cast pad that uses studs rather then ubolts
    as now the studs do not face the right way
    recently there were a couple of bandaid spring plate designs on this site to help a few degrees of shim
    the correct way involves moving the studs to the new angle
     
  19. unclematty

    unclematty 1/2 ton status

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    Re: Big lift guys- who\'s had their knuckles turned/rotated?

    your really gonna mess up the caster on that axle if you do use just the shims /forums/images/graemlins/grind.gif
     
  20. unclematty

    unclematty 1/2 ton status

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    Re: Big lift guys- who\'s had their knuckles turned/rotated?

    I also saw guy who had flanges welded into the axle tube so that he could change the amount of caster depending on the /forums/images/graemlins/hack.gif amount of lift he was running
     

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