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welding on perches... rotate axle or keep it straight?

Discussion in 'The Garage' started by jekbrown, May 16, 2002.

  1. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

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    ok, time for my noob question of the day.

    I have a new ff14b that I am gonna cut/grind the perches/shock mounts off so I can relocate the mounting points and use my own HD parts. When I put the new ones on, should I attach them so the yoke is perpendicular to the ground plane, or so that it points up towards the t-case? Here is what I'll be runnin...

    ff14, np205 (fixed yoke), and a High Axle Driveline CV shaft 1350cv/1410 joint at ff14.

    knowing that, how should I orient the axle? thanks in advance!

    J
     
  2. Scooter

    Scooter 1/2 ton status

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    With the CV driveshaft you'll want to point the pinion almost directly at the t-case .. maybe 1-2* down.
     
  3. bobsurf

    bobsurf 1/2 ton status

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    Wouldn't perpendicular to the gound plane be pointing straight up? As scooter said, I figure you would want it pretty close to pointing at the T case. Isn't there some number of degrees that serves as the "range" of acceptible angle?

    Side note, regarding the whole shims vs. moving the perches, is there any reason to use shims besides it being easier? Thoughts?
     
  4. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

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    the only advantage I can see to shims is that they arent permenent... so if u r the type that upgrades your rigs suspension every month... you wont have to do quite so much work. Myself, I am gonna use rockjunkies super-beefy perches to move my ff14b back a lil ways. I needed to move the perches anyway... figured I'd go with something trick while I was at it. /forums/images/icons/wink.gif

    J
     
  5. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

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    lol, good point on my perpedicular comment. /forums/images/icons/tongue.gif must be to early in the day for me to function right. What I meant to say was parallel to the ground plane...

    at any rate, I have one vote for angled up towards the t-case... any1 else wanna chime in?

    J
     
  6. four_by_ken

    four_by_ken 1/2 ton status

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    Weld them on. Just point it slightly below the angle that would be directly at the tcase. Reason beiing... you want the pinion to be pointing at the tcase exactly, or closest you can get it, when the truck is at full 'power'. So, when you are really hammering on it and the springs wrap a little, all springs do, the pinion will come up some. Hopefully this little rise will make it point right at the tcase during this time.

    Ken H.
     
  7. Mreetz

    Mreetz 1/2 ton status

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    Point it towards T-Case.
     
  8. Swanson52

    Swanson52 1/2 ton status

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    Where did you get your spring perches? I am going to use a 14bff out of a van, and like you, while I am moving stuff around I figure I may as well use trick hardware...
     
  9. Rockjunkies

    Rockjunkies 1/2 ton status

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  10. Derf00

    Derf00 1/2 ton status

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    When I did my 14b conversion w/cv joint I rotated the pinion up and set it 2 deg below the t'case and it runs perfect.
     
  11. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

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    Swanson52: from rockjunkies. /forums/images/icons/smile.gif

    everyone else: thanks much for the info guys!! I know the HAD shaft will allow a lot of angularity, but I guess it makes sense to minimize it as much as possible so the travel that the HAD allows will be taken advantage of as the suspension does its job.

    anyway, thanks again,

    J
     
  12. Esteban86K5

    Esteban86K5 1/2 ton status

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    Jesse from HAD will tell you to put it at 2degrees down. If that's what he wants, then that's what he gets. I mean, he does it for a living so I'm sure he knows his $H!T.
     

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