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centering rear with new perches

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by ftn96, Sep 9, 2001.

  1. ftn96

    ftn96 1/2 ton status

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    Well, I got my perches between the springs and the axle tube and I took some previous measurements to help get the pumpkin centered correctly before I start to welding the bad boys on. But for some reason it just doesn't look dead on centered. I dont have the driveshaft yet. Im gonna bolt the d-shaft up first for more comparison before I start welding but was wondering if you guys had any other ideas or trick tips to making sure I have the right location for these perches as far as left to right.

    I have another 14 bolt in the garage and the perches are
    4-7/16 from the tub side of the backing plate mount. So I got these perches lined up with the same measurements.

    Any more ideas? The centering part has been the only real pain in the arse here. The angling part is a breeze.

    "you know... the guy with the BAD A$$ spring perches!!![​IMG]
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  2. ftn96

    ftn96 1/2 ton status

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    Also, is the yoke supposed to be dead on center between the frame rails or is it a little offset? I was trying to get a measurement from the leaf springs but they are a little too in consistant as they can move in and out.
    But basically I didn't take enough numbers before I too kthe old perches off. Bad brandon bad brandon!!!! Can some one spank me? Preferably a sexy hot lady?[​IMG]

    "you know... the guy with the BAD A$$ spring perches!!![​IMG]
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  3. ftn96

    ftn96 1/2 ton status

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    Somebody?

    "you know... the guy with the BAD A$$ spring perches!!![​IMG]
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  4. wayne

    wayne 3/4 ton status

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    I would just go with the measurements from the other axle if it is a 3/4 ton. Those measurements should be what you need for your truck.

    See <a target="_blank" href=http://coloradok5.com/gallery/Waynes-Toy>Project Mighty Mouse</a> here.
    <font color=blue>Wayne<font color=blue>
    <font color=blue>Happy Trails<font color=blue>
     
  5. ftn96

    ftn96 1/2 ton status

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    The only concern I have with that is that the perches that rene made for me are 1/16 of a inch wider than the ones on the other axle. And yes it is a 3/4 axle setup.

    "you know... the guy with the BAD A$$ spring perches!!![​IMG]
    <a target="_blank" href=http://www.nashvillek5.freeservers.com>www.nashvillek5.freeservers.com</a>
     
  6. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Well 1/16" shouldn't make a world of difference. Just amke sure you have a reliable surface to measure from on each side of the axle. Look for a nice flat spot on the backing plate and use that, then make sure its exactly the same on each side and your width is correct and you should be good.
    I don't think the pinion is dead center...but I could and probably am wrong on that. In any case the pinion would be very hard to measure center on.

    Rene

    <font color=green>Dyslexics of the world...UNTIE!</font color=green>
     
  7. HispanicPanic

    HispanicPanic 1/2 ton status

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    the reason it looks off center is cuz the pumpkin is off-center look at the drive shaft to be straight centered also if you got measurements from another diff. go with it

    <font color=purple>I put the Panic in Hispanic</font color=purple>[​IMG]
    <a target="_blank" href=http://4x4.alloffroad.com>4x4.alloffroad.com</a>
     
  8. ftn96

    ftn96 1/2 ton status

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    I was wanting to measure the width but its a pain in the arse to get that with the tape having to wrap around that big ass pumpkin.[​IMG]

    "you know... the guy with the BAD A$$ spring perches!!![​IMG]
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  9. thatK30guy

    thatK30guy 1 ton status Premium Member

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    If you have two 4" rear blocks laying around, set them on the perches and then measure across to the holes. Those 4" blocks are tall enough you can measure OVER the pumpkin without 'bending' the tape measure.

    <font color=red>I'm a "black top mudder"!!!</font color=red>

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  10. ftn96

    ftn96 1/2 ton status

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    Well I sold my 4" blocks to dawson444. But here are some pics. But they are probably not true enough for good advise.
    <a target="_blank" href=http://www.nashvillek5.freeservers.com/sunday.htm>www.nashvillek5.freeservers.com/sunday.htm</a>

    "you know... the guy with the BAD A$$ spring perches!!![​IMG]
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  11. TheGeneral

    TheGeneral 1/2 ton status

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    Just had mine welded on. Center to center for a K5 at least 89 is 42.5. If I remeber correctly the perches had to be moved outward 1.25 per side from the one ton axles config. Mine bolted up no problems.

    If you ain't hurt, you ain't playin' hard enough.

    The General
     
  12. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Those look swanky!!! Now all you gotta do is weld it up! [​IMG]

    Rene

    <font color=green>Dyslexics of the world...UNTIE!</font color=green>
     
  13. ftn96

    ftn96 1/2 ton status

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    I aint sweetin the welding stuff long as I have them out in the floor like all my practice projects. The welding stuff on the truck overhead, sideways and all that other [censored] to deal with really does suck! I just experienced this first hand this weekend

    "you know... the guy with the BAD A$$ spring perches!!![​IMG]
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  14. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Welding in position is much harder...
    Welding where you can't see what you're doing is even worse. I've had repairs where I've had to weld by braille...[​IMG]

    Rene

    <font color=green>Dyslexics of the world...UNTIE!</font color=green>
     
  15. ftn96

    ftn96 1/2 ton status

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    LOL!!! Braile!!!! Just like the braile on drive through ATM machines!!! Whats up with that?[​IMG]

    "you know... the guy with the BAD A$$ spring perches!!![​IMG]
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  16. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Well I know here many drivers should be using braille...lord knows they drive like they're blind.[​IMG][​IMG]

    Rene

    <font color=green>Dyslexics of the world...UNTIE!</font color=green>
     

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