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Crossover and Hy-Steer for FJ-40's?

Discussion in '40- & 55-Series Tech' started by sdgraber, Sep 16, 2003.

  1. sdgraber

    sdgraber

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    Anbody know if there are companies out there making a Hy-Steer steering arm for the FJ-40? I want to Spring Over my cruiser and am not to keen on making the piece myself...any options? ???
     
  2. beanz2

    beanz2 Moderator

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    RockBuggySupply.com used to make one for the pre-81 cruisers, but since the company was sold, I'm not sure anymore. Is yours a pre-81? If 81 or newer, the minitruck ones would work.

    Dave
     
  3. woody

    woody Internet Fireman Staff Member

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    I run Allpro arms...price was right, good recommendations from friends, and the height of their arm was perfect for my spring pack/axle rotation setup.

    Sky Mfg is another good source, as is rockbuggysupply.com and rockstomper.com. All have different heights, so some careful measuring is needed.

    79+ knuckles went to the larger pattern, 78-older are the small pattern.
     
  4. sdgraber

    sdgraber

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    Thanks Dave and 'Woody',

    I will check out Allpro , Sky, and Rocky Buggy Supply. Another question...I have FJ-55 rear packs on the rear of my 78 FJ-40...can I do my SOA with front FJ-55 packs? I've heard of using rear 55 packs on the front of a 40, but don't know why those where chosen instead of front 55 packs?
     
  5. woody

    woody Internet Fireman Staff Member

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    [quote author=sdgraber link=board=1;threadid=5319;start=msg41809#msg41809 date=1063735043]Another question...I have FJ-55 rear packs on the rear of my 78 FJ-40...can I do my SOA with front FJ-55 packs? I've heard of using rear 55 packs on the front of a 40, but don't know why those where chosen instead of front 55 packs?[/quote]

    IIRC, the FJ55 front packs are either A> identical to the FJ40 packs or B> are the same length but with a centered pin.

    Now that I think more, it's B (your tape measure will tell ya tho)....anyways, it pushes your axle forward ~1.75" which is nice...but you don't gain much in the articulation arena, which is the reason for using the longer FJ55 rear packs. (these are 3.5" longer)
     
  6. sdgraber

    sdgraber

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    Woody,

    Cool info....I didn't know that the rear 55 packs were longer which certainly would be nice for wheelbase, and articulation :D If I stick with the front 55 packs, that will be about the same as using stock 40 packs, accept that I would have to reverse the 40 packs and swap the military wrap (redrilling the one swapped ???) to get the same wheelbase, right? I think the 55 fronts would be a little simpler, yes??

    P.S. I just want to say how freakin cool it is to be able to get questions like this answered...thanks a ton for keeping this sight live and all your input :D :D
     
  7. hammerhead

    hammerhead

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  8. woody

    woody Internet Fireman Staff Member

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    55 fronts will be slightly simpler, and will extend your wheelbase a tad. You won't gain "quite" as much flex as with the longer rear 55 packs, but it does simplify installation since you don't need to redrill a leaf to locate the mil-wrap properly for the shackle reversal.

    see the Tech Links too and read up on my 55 pack install writeups. May clear up a few things. (or may just confuse you more!) lol

    Forgot about 4x4Labs...thanks hammerhead!! Heard nuthin but good about that place too.
     
  9. sdgraber

    sdgraber

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    I think I'm set to get rolling on the front SOA. Really appreciate you guys input...and yes 'Woody', your tech article has been a big help. I'll keep you posted on the developments and maybe send a pic of the completed 78 FJ-40, cherry red dream (Rudy), when I've got him finished.

    Many Thanks,

    Scott
     
  10. sdgraber

    sdgraber

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    After getting into my SOA project (poor Rudy is in pieces at my local welders shop), I need to revive this discussion as I need HELP ???
    I had planned on using stock 40 leafs, flipped and redrilled for the added 3.5 inches of wheelbase. What I didn't take into account is that doing a shackle reversal with the solid mounts moved to the front and welded flush with the end of the frame will also get me an added 1.5 or 2 inches of wheelbase over stock, right? So now we are talking more like 5.5 inches of added wheelbase right? Is this going to add additoinal steering set-up concerns over and above the 3.5 inches I was plannig on? I'm looking at cross-over using a second welder passenger side on top of the stock one, or possibly a custom hi- steer using welded arms on both sides (though those arms from 4x4 Labs are looking better all the time :D). Any advise on whether to go flipped leafs and shackle reversal (5.5 inches), or just stock leaf set-up and shackle reversal (2 inches) would be GREATLY appreciated.

    Scott
    78 FJ-40 "Rudy"
     
  11. rocrawler

    rocrawler

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    Having done both the crossover and the hysteer there's only one way to do it right. Go hysteer if you go with the double arm that leaves the tierod below the springs trust me the first thing you'll do is wack it on a rock and end up with a u shaped tierod and the wheels both pointing in.
     
  12. woody

    woody Internet Fireman Staff Member

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    uuuumm...check yer math Scott. You do NOT need to redrill the 2nd leaf if you both reverse the springs AND do the shackle reversal, and you only move the front axle ~3.5". IMO, this is a great way to do it, since you keep the short side of the pack connected to the solid mount, which helps with wrap issues (yes, even in the front)

    Final wheelbase with reversed rear packs, reversed front packs, AND the shackle reversal should put you in the 97" range. (stock = 90", +3.5" front and +3.5" rear)
     
  13. sdgraber

    sdgraber

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    I must have been spinning all this in my head for to many nights now :p If I've already done the shackle reversal and moved the stock solid mount flush with the front of my frame, then all I need to do is put my stock 40 leaf packs on with the short side forward and prestoe...3.5 inches of wheelbase increase? Let me go ahead and give myself the finger :flipoff2: for trashing two drill bits drilling the springs to reverse the military wrap when I wouldn't have needed to...also weakened them a little I bet :'( Just so my foggy mind is clear...with a shackle reversal, you just bolt those stock 40 leaves on backwords, no drilling, no flipping the military wrap...and you gain 3.5 inches, is that right? If so then I'm feeling a little like Homer :doh: :doh: :doh: Thanks for helping me keep things straight...'Rudy' and I are greatful!

    Scott
    78 FJ-40 "Rudy"
     
  14. woody

    woody Internet Fireman Staff Member

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    in front, no drilling is required...just reverse the packs w/ the shackle reversal and be done with it.

    NOW, if you were installing stock FJ40 packs in the rear and reversing them, you would need to redrill...

    or like me, you wisely carry a pair of stock FJ40 packs, drilled and setup for installation in the rear, just in case you bust one.

    Your efforts aren't wasted, you are just better prepared! lol
     
  15. hammerhead

    hammerhead

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    Do the high-steer dude. I took mine out today for the first hard thrash since going to high steer and the larger saginaw. Wow, too cool. Worked wonders and didn't have a care in the world. I went right into the nasty stuff and no rocks were stacked till after I went through (my buddies haven't switched yet). No more bent tie-rods!! WOOOHOO!!!
     
  16. woody

    woody Internet Fireman Staff Member

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    All this talk of bent tie rods...I've never bent one. Mine are 1/4" wall 1" OD DOM and prior to the histeer, I absolutely thrashed them, even leaving dents on the front diff cover FROM the tie rod. Granted, histeer is much nicer, but I never had issue with them down low. Also, mine in "stock" location just barely cleared the bottom of the leaf packs, so they were pretty protected anyways.
     
  17. rocrawler

    rocrawler

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    Woody you must not have big enough rocks East of the big ditch.
     
  18. hendo

    hendo

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    i put the short end of my leaf springs in the front and on compression it sent the pinion angle right up to the oil pan way too steep for a drive shaft to work so i had to flip them around again and they work just fine with my soa and reversal,lost a little more wheel base of which i was after
     
  19. cpg33

    cpg33

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    I have had cross over steering for many years many tough trails with no problems.
    :D.
     
  20. BionicCruiser

    BionicCruiser

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    i made my own tie rod out of 1/8th wall tubing, 3/16 wall tubing inside that and hiems. drilled out the steering arms and put a grade 8 bolt through it. also, my steering arm set up is a passenger arm flipped and welded to the existing one. i have rock chips in the paint and no dents or bends. cost to make TR $60. only problem is with the stock center arm, the drag link end hits the spring if DS is compressed. (have SOA, SR and spring turned 180) i am putting in a Saginaw PS setup now to help remedy that and get rid of the 8" of play in the steering :eek: that's even after mini truck PS installed.
    those 4x4labs steering arms are looking real appetizing though!