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Springs

Discussion in 'Early CJ5 and CJ6 Tech' started by panzer, May 21, 2006.

  1. May 21, 2006
    panzer

    panzer Super Mod Staff Member

    Columbus, OH
    Joined:
    Dec 9, 2003
    Messages:
    1,245
    Well I tried to finish up my new springs on Friday. Started w/ the fronts.
    Swaped them out pretty quickly but ran into a problem w/ the front axle
    not sitting correctly on the springs. It turns out w/ the replacement tranny,
    T98, the PO put in, the front driveshaft has was lenthened. So when trying
    to sit the axle on the indexing pins on the new springs, the drive shaft
    couldn't colapse to the right length. It's bout 1 3/4" to long. So I now have
    pull the drive shaft, and take it to get cut down. I also believe the
    existing index pins on the existing springs are not in the same place as
    the replacement ones. That's the reason for the discrepancy in the
    driveshaft length.

    Anyway, after figuring this
    out, I swapped out the new springs for the old ones and went to the rear
    ones. The rear ones went on w/ no issues. Looks pretty nice. I'll post
    some pics, when it stops raining.

    So, has anyone else run into this issue before? Or is there something that
    doesn't sound right here?? Does anyone know what the correct length for
    the front drive shaft is for a T98 to D27.
     
  2. May 21, 2006
    Posimoto

    Posimoto Hopeless JEEP Addict

    Minden, Nevada
    Joined:
    Aug 7, 2003
    Messages:
    4,538
    Are you absolutely positive you have the rear springs on the rear and fronts on the front? Unless you went front a lift set of springs to a stock set, you shouldn't have a driveshaft length problem. Did you buy offset springs? Are you sure the center pins are in the center holes in the axle pads?
     
  3. May 21, 2006
    panzer

    panzer Super Mod Staff Member

    Columbus, OH
    Joined:
    Dec 9, 2003
    Messages:
    1,245
    The fronts and rears are different lengths. I have them in the correct
    locations. And I'm going from stock to lift. The New springs are a 1"
    SuperLift set. And they aren't offset. The pins are centered. I'm sure the
    existing front set are not the orginals. The rears were the originals. The
    hardware was rusted up pretty bad. In fact I had to order new spring
    plates. The fronts were somewhat newer. And the pins are not in the same
    place. Thepins on the new ones are about 3/4" further to the rear. And the
    driveshaft will not colape enough to move the axle to the new pins.
    I'm sure the pins are center of the pads. That's where I got the dimension
    for how far to the rear they need to go.
     
  4. May 21, 2006
    jpflat2a

    jpflat2a what's that noise?

    Hermosa, SD
    Joined:
    Jul 30, 2003
    Messages:
    8,513
    the parts book says 28.50" length for the front shaft, F4, T98, CJ5.
    this would be with the shaft collapsed, and measured center-to-center on the u-joint caps.
    Like Posimoto above, something doesn't sound right with your front springs, are you sure the center pins are centered in the springs, and installed correctly in the housing ? shouldn't be that much of difference...
    it's not like they made different springs with the choice of center pin locations.....not being harsh, just trying to be helpful
     
  5. May 21, 2006
    panzer

    panzer Super Mod Staff Member

    Columbus, OH
    Joined:
    Dec 9, 2003
    Messages:
    1,245
    Jim, that's what I needed. You wouldn't happen to know the working length
    would you?? Man, this thing has been a real pain. We spent a couple of hours
    trying to figure what the difference was. We had another '67 that we were
    putting togother and measuring it up. It has a T90. And I knew there was a
    difference in the location of the transfer case. I think the existing front
    spring pins are not in the correct place. They may have had some made and they
    aren't centered. We compaired the wheel wheel base and as close as we
    could come up w/ is that mine is about 1 1/4" longer than the '67's. Which
    is wrong. They should be the same. And the front drive shaft was almost
    6" longer then the '67's. Knowing it's a different transmission. So I guess I
    need to either find a correct length, or get the existing one cut down.
    Anyone know how much that runs?? Or I may post on the wanted
    thread for one.

    Thanks a ton Jim. If I go have it redone, that dimension will help a bunch.
     
  6. May 21, 2006
    jpflat2a

    jpflat2a what's that noise?

    Hermosa, SD
    Joined:
    Jul 30, 2003
    Messages:
    8,513
    for the front driveshaft, I would take a static measurement of the Jeep as it sits on level ground; measure the center-to-center distance of the yokes as close as you can; this measurment would be your working or mid range measurment; from there, you can add or subtract inches to get the collapsed/extanded length you think you need.
    Personally I think you would need to add at least 1.5 inches in both directions of the static measurment, for proper slip yoke operation.
    A machine shop/driveline shop can make suggestions also.
    A friend had one lengthened (new tube installed) for $65 about 4 years ago; your price in your region may vary: I wouldn't be concerned with balance issues on the front shaft.
     
  7. May 21, 2006
    Dondo

    Dondo These are my good pants..

    Hutchinson, Kansas
    Joined:
    Jun 26, 2004
    Messages:
    314
    Panzer -- I bought exactly the same lift and had exactly the same problem with the front axle being shifted forward about an inch or so. I didn't have the problem with the driveshaft however since I have the 90/18 stock setup. I'm not much more help then that.

    Dondo
     
  8. May 21, 2006
    panzer

    panzer Super Mod Staff Member

    Columbus, OH
    Joined:
    Dec 9, 2003
    Messages:
    1,245
    Went out and measured the shaft. It's 29 1/4". Minus the 3/4" in the slip
    joint area, it's exactually the 28 1/2" you mentioned Jim. So it's
    something else. I'll have to check into it more this week.

    Dondo, it's interesting you mention your preticament. I'm wondering
    why they would be off by that amount?? I'm going to figure this out this
    week.

    Thanks for the input guys
     
  9. May 22, 2006
    panzer

    panzer Super Mod Staff Member

    Columbus, OH
    Joined:
    Dec 9, 2003
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    1,245
    Jim, do you have any info on the location of the spring perches??? I
    believe the front one my have been moved forward, and the springs may
    have been made for the different perch location. And the center pins may
    be in the wrong location. So when I'm trying to install the new springs the
    center is in a different location. Mainly 3/4" to the rear.
     
  10. May 22, 2006
    jpflat2a

    jpflat2a what's that noise?

    Hermosa, SD
    Joined:
    Jul 30, 2003
    Messages:
    8,513
    no sorry
    no info given for the hangar locations on the frame
     
  11. May 22, 2006
    panzer

    panzer Super Mod Staff Member

    Columbus, OH
    Joined:
    Dec 9, 2003
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    1,245
    Thanks for checking Jim...:stout: :stout:
     
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