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  • 4WDH Lift Kit Issues

    Tried installing my new lift kit over the weekend. Had some problems I'm not too pleased about. Trying to decide how best to make it fit, or whether to even bother trying to make it fit. In a nutshell, the springs don't fit between the u-bolts. There are two reasons why: 1. Springs are wider than factory, and 2. U-bolts are made from larger diameter bar than factory. Simply drilling out the spring plates doesn't fix the problem unless you have a mill to plunge the hole off center from the original hole so as not to crowd the spring pack with the extra thickness. Didn't figure on needing a Bridgeport to install a lift kit. Because things are all in a bind the springs aren't alinging to the shackles correctly and I can't simply relax the joints and let them find their proper location. I think the result of all this binding is that the bolt in the middle of the spring pack isn't centered in the spring perch on the axle.

    What is the common fix for this? If I drill out the spring plate holes even larger (they're 1/2 now to fit the fatter bolts) I'm wondering I'll have too much room between the springs and the bolts allowing things to shift. Or will the U-bolt tension keep things from shifting even if the springs and bolts aren't up tight against one another?

    Not real impressed so far. Figured it shouldn't be so tough to have a spring made to the factory width. If it was my company I'd have test-fit a product before putting my sticker on it. The also only has enough hardware to attach four of the eight U-bolts so I'll have to call for the missing parts.

    Chilly

  • #2
    Sounds like you're trying to put a '76+ kit on a pre '75 CJ5. Which kit did you get?

    Best thing to do is call 4wd hardware. They've got good customer service people.

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    • #3
      No problems

      My 4wd 4" lift bolted right up with no problems. The only thing was in went up more like 6 or 7 inches. Maybe the wrong lift package for your jeep?

      Comment


      • #4
        It's the right kit number. The poly bushings are dead-nuts perfect matches for the shackle hangers. If it was a 76+ kit they'd have been too long and stuck out the ends, if they even fit in the holes.

        Redtail, was your kit for a pre-76? Did it have spring travel limiters with bolts across the top of the leaf or the folded over kind? How long ago did you get that kit? These look different from the photos in the catalogs. The military wraps are not circular, but sort of flattened. For some reason I was also thinking the ones in the catalog showed the limiters with horizontal bolts across the tops of the leaves, whereas these have folded over tabs. Maybe they re-sourced them from a different mfg? I'll call them later today.

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        • #5
          I had no problems when I installed a 4WD 2.5" lift. Everything fit like it was supposed to. I originally also got more lift, about 4". Now that it has been broken in, it's down to about 3".

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          • #6
            I ditto to call Customer Service. I have had great experience with them, and this from a former CS manager.

            I do beleive 4WD markets a CJ lift using YJ springs. Call them ASAP before you drill or cut anything!

            How much more would it be just to get the right shackles and spring plates? They have some with an integrated skid plate that would really be worth the extra cash...and the stock stamped shackles freak me out anyways!

            Comment


            • #7
              Factory u-bolts: 7/16 (except for the 1/2 one that goes over diff)
              Kit u-bolts: 1/2"

              Increasing the diameter of two u-bolts by 1/16" reduces distance between the u-bolts by 1/16". Add to that the 0.025" wider springs and we have a 3/32" problem to contend with. Doesn't seem like a lot, but the spring pack isn't exactly going to give way so the u-bolts are all canted out at the top.

              Stock shackles will be replaced later. Just wanted to get the springs under there for now. And so far as getting the "right" spring plates, mine are factory. Can't get any more correct than that. Putting the right diameter u-bolts in the kits, on the other hand, would be an absolutely famous idea. And of course the right number of nuts and washers. I'm confident 4WD will sort this out but I'm not holding my breath for one of their customer service reps driving 1.5 hr to spend half of a Saturday reinstalling the kit.

              Comment


              • #8
                What is your Jeep year and model??

                pre 76 should be 1.75 inches wide.

                Post 76 are 2 inch I believe

                Wranglers are 2.5 inches wide.

                My 2.5 inch lift had one ubolt that was a larger diameter than the rest. I realized this late but worked like a charm once installed correctly. It was to go over the center section.

                Something doesn't sound right. My 2.5 inch 4wd.com lift went on really easy.

                High5

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                • #9
                  73 CJ5. Stock springs measured 1.780", lift kit measured 1.805". Combined with 1/2" u-bolts vs 7/16" stock ones and I ran out of room between the u-bolts for the spring packs. High5 did your kit have one u-bolt that was bent at a larger radius (to fit over the differential) AND ALSO made of thicker stock? And all the rest of them used smaller u-bolts made out of smaller stock? That's just like the factory setup. I had one bent with larger radius for going over the diff, but all of them were formed from 1/2" stock.

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                  • #10
                    Yeah, I had one that was larger. I didn't realize it till after I tried drilling a new hole. I had no other fitment issues. They went on really easy. Mine was on a 1975 CJ5.

                    High5

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                    • #11
                      Chilly where are you located at? I just made a trip down to Stuver Springs in Akron and they gave me the proper ubolts. Only cost 10 bucks or so. If you really wanted them to they could rebuild your stock springs for you. I bet it is cheaper than the new suspension unless you want the lift. I bought new shackles with my 4wd 2.5 lift and had no problem on my 5. Good luck, Parts these days for some reason have a tendency to not be made correctly. I have had to take back plenty of parts that were the right number but not the right dimensions.

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                      • #12
                        Well, 4WD customer service has provided valuable assistance in pointing out obvious ways that I can fix the damn thing my own self. Such as buying myself some 7/16" bolts to match the way the kit SHOULD have been if it had really been designed as a bolt-in affair. Or I could hog the holes in the spring plate out with a Dremel. Classy. Or I could somehow ream the holes off-center to get the clearance I need, which is impossible because a reamer only follows an existing hole. Still haven't got an answer on what they're going to do about my kit missing half of the hardware so I'll have to call them back on that one.

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                        • #13
                          Oh!

                          This dosn't sound good. They better take care of you. It should have been just a bolt in unless they told you some mod's were necessary with your model.
                          Last edited by redtail; 05-10-2007, 09:07 AM.

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                          • #14
                            To their credit they were more polite and friendly about telling me how I can fix it myself than my post may have suggested. If telling someone to figure it out themselves in a kind voice is good customer service I guess they've got it in spades. This is their website provided to us free of charge so I'm done complaining about it here. I'll fab my own spring plates to fit the springs. I think I'll include studs for anti-sway bar, too. I'll even do them the favor of buying my own hardware since they can't seem to get all the parts into the box before taping it shut. That's just the kind of big hearted guy I am. If I asked for the missing parts I'm afraid I'd get a recommendation on where to buy hardware.

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                            • #15
                              oops

                              Don't take that the wrong way. 90 percent of the parts for my rebuild have come from 4wd. I wouldn't be here if I didn't like doing business with them. A big determining factor of changes and parts ordered is the amount of modifications necessary to install the parts. Not all of us are outstanding metal fabricators like Mikey or Upper, including myself.
                              Last edited by redtail; 05-10-2007, 05:23 PM.

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