Would a Dana 30 be worth using?

Discussion in 'SFA KJ' started by Ry' N Jen, Feb 21, 2012.

  1. Ry' N Jen

    Ry' N Jen Banned

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    Damn, that's too bad...
    Would of been a valuable resource for all of us folks who are starting from square one!
    I saw your parts list. Is it on this site or over on LOST?
    I guess I'll try the search function and see if I can find it.
    Unless you happen to have a link handy?

    Cheers
    Ry
     
  2. Red_KJ_666

    Red_KJ_666 Full Access Member

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    There's another problem with running a Jeep 30hp or TJ 44 for that matter The Kj rear is 3" wider than either of those so you have to run wheel spacers or live with a narrower front track width than rear. Also RY your current D30A ARB won't work in the other Dana 30's iirc, and if you run a TJ44 or XJ 30HP you also won't be able to run a independent coil/shock setup you will be limited to C.O.'s because there is simply no room to mount them separately otherwise. Troy is right in the fact that if you don't cut into the engine bay with the C.O.'s you won't get very good flex, the spring rates most of the guys are very high as well normally a 450/500 or worse 500/500 10" travel combo. Currently I'm running a 150/300 14" combo that's a bit soft for a DD but flex's awesome. Soon my 12" FOA's will be repaired (Now that they're re-opened) and I'll be on a 250/300 Combo which should flex well and compliment my OME 891 rear springs well. Here's some of Troy's build link to LOST LOST JEEPS • View topic - It sits level
     
  3. Ry' N Jen

    Ry' N Jen Banned

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    According to the ARB website, the RD100 Air locker used in the Dana30A is the same as the JK Wrangler (Non Rubicon), Grand Wagoneer, etc. so the locker will be good to use in a Dana 30
    (See this PDF link for details: {Page 2} http://arb.com.au/media/products/air-lockers/application_chart.pdf )
    Anyway I'm still learning about all this stuff!
    I'm not going to pretend to know stuff that I know sweet F A about!
     
  4. tjkj2002

    tjkj2002 Full Access Member

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  5. Ry' N Jen

    Ry' N Jen Banned

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    Thanks Troy.
    I'll be looking over your parts list closely and looking where you spent your hard earned cash!
    Although I don't think I will go as extreme as you (But you never know Eh?)
    It will give me a great bench mark as to what I should be shooting for!

    Hell, it's only money, right?

    You sure cannot take it with you when you croak!
     
  6. Chino78

    Chino78 New Member

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    Troy, didn't you use front rubicon express shocks for a 4" lifted ZJ???... I think these are only like a 10-11" of travel... That's what I remember when I had my ZJ a long time ago... :shrug:
     
  7. J-Thompson

    J-Thompson Full Access Member

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    No joke
    But you can pull the inner stuff a rag in the tube and drive
    home ,wheelin trip over
    on the great and mighty HP44 you can pull the stub shaft
    and drive home ,wheelin trip over
    Now with the 30
    I call a wrecking yard
    ask them the question about the 4WD Jeep
    pick up the used stub shaft and wheelin on

    As to the track width
    KJ rear is 59.7
    TJ front is 58.X
    Round about an inch or so
    wider wheels and or spacers and problem solved
     
  8. Red_KJ_666

    Red_KJ_666 Full Access Member

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    The KJ is actually 62.5" Rear
    While the XJ 30hp is 58.75"
    so it's almost a 4" Difference in reality, if you dpn't believe me strip her down and measure your rear Rotor hat to Rotor hat surface where the wheel bolts up.
     
  9. J-Thompson

    J-Thompson Full Access Member

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    Why do that
    I have google and that is where I got my numbers from
    If the KJ really is 4" wider then the ruts created by TJ/YJ's
    would have been no issue or cause our KJ to unseat beads
    and rip side walls
    Yet for some strange reason it fit right in the ruts
    which in turn caused the rear diff to drag

    Still dont believe my try searching Jeep Liberty track width
    then do the same for the TJ
     
  10. tjkj2002

    tjkj2002 Full Access Member

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    You still think your google search of 18' for a TJ's turning raduis is correct so your probally not correct of the track widths either but think you are because you found it through google so it must be correct.
     
  11. Ry' N Jen

    Ry' N Jen Banned

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    So anyway, a Dana 44 would be a good choice for a front differential then?
    What does a good second hand unit cost typically Stateside?
     
  12. tjkj2002

    tjkj2002 Full Access Member

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    What are your plans is said SFA swap happens? Keeping the 8.25 in the rear?

    Basically you got 3 main D44's you can use............

    One with 4.5 on 5 bolt pattern that is low pinion and uses D30 outers and must use coil overs,the TJ Rubicon D44.

    One that is 5 on 5 bolt pattern that is high pinion but much wider then a stock,might be able to use seperate coils/shocks but most likely have to use coilovers,the JK Rubicon D44.

    Then the last one is is 5 on 5.5 bolt pattern and is high pinion,can be narrower then stock(EB HP44) or much wider then stock(F100/F150 HP44),will require welding on new brackets but has all serviceable bearings and manual lockouts.You only want '75-'77 F100/F150 HP44 due to weld on wedges and can look up the good years for EB's.


    As far as local prices here in CO HP44's can be had for $150-$200,JK D44's run about $1200+,and TJ Rubicon D44's(now rare) run about $800+ without knuckles,axles,or brakes since when they upgrade they must transfer that stuff to there new axle in most cases.Granted the Rubicon D44's will come with a locker already which is either air(junk) or electric.
     
  13. MSReNeGaDe

    MSReNeGaDe Banned

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    Air lockers at junk? I was under the impression Arb lockers were the lockers of choice for most people

    sent using the dark side of the force
     
  14. Ry' N Jen

    Ry' N Jen Banned

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    I was thinking a ford 8.8 Or 9 inch for the rear or a bigger Chrysler Corporate rear end...
    As i really know very little about all this stuff, im learning as I go.

    Remember I'm a classic Mini guy, that's where all my knowledge and expertise is in!

    Jen says i should look into buying complete bolt in high quality aftermarket differentials.
    Not inexpensive, but easier and better in the long run.

    I'm open to suggestions.

    An SAS will definately happen in the near future.
     
  15. Ry' N Jen

    Ry' N Jen Banned

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    I've been reading up on a couple of aftermarket diff manufactures.
    Currie and Dynatrac seem to be two big companies to study.
    My eyes are really starting open in regards to options and applications with all this information.
    There are many choices to say the least. I've got allot of research to do to figure out what I want/expect from an SAS conversion on a KJ.
    Set a budget and build up good used axles or buy complete aftermarket units?

    The saving grace is that Jen's into it just as much as I am...

    Allot of work ahead of me.
     
  16. J-Thompson

    J-Thompson Full Access Member

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    Both were found on Jeeps web site
    But maybe you know more about the
    demnsions then they do
     
  17. tjkj2002

    tjkj2002 Full Access Member

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    Early stock TJ Rubicon air lockers were junk,they are not made by ARB.
     
  18. MSReNeGaDe

    MSReNeGaDe Banned

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    Guess a jk 30 would be best then.

    sent via Morse code
     
  19. tjkj2002

    tjkj2002 Full Access Member

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    Again how is a thin walled(goes for JK D44 also) axled tube with a 7.25" ring gear better then a D44?
     
  20. tjkj2002

    tjkj2002 Full Access Member

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    That's what I did with my rear RockJock60.Ordered it with the TJ mounts already welded on,forgot to tell them to not weld on the shock mounts so had to cut them off to weld on new ones to work in the KJ.