Off-center leaf springs? - JeepForum.com
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post #1 of 11 Old 03-10-2020, 09:20 AM Thread Starter
Cutlass327
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Off-center leaf springs?

Just kicking an idea around in my head.

Looking for a leaf spring comparable to the YJ front, only where the center pin would move the front axle forward an inch or so.

Looking at my 5 from the side, it looks like the axle is moved to the rear, not centered in the fender opening. I have the TDK frame with their welded in shackle reversal. I'd like to move the axle forward a bit, just to center it and also help prevent the tire rub I get with the 31s. The added wheelbase length is also a perk to me.

I remember something about the Dakota rear springs being like what I am looking for, but cannot remember where I saw anything about it.

I know I'll have to move the steering box forward, that's not an issue, they make HD mounts for that.

Any ideas on options?


Rick

1978 CJ5 5.0HO/T177/D300, '86 D30/D44 WT axles, 'glass body, 31x10.5 BFG A/T, TDK galv'd frame - DD and weekend toy


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post #2 of 11 Old 03-10-2020, 05:36 PM
BrutusBlue
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See if this helps...not sure it will come through clearly enough.
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Last edited by BrutusBlue; 03-10-2020 at 05:39 PM. Reason: Poor image
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post #3 of 11 Old 03-10-2020, 06:23 PM Thread Starter
Cutlass327
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Quote:
Originally Posted by BrutusBlue View Post
See if this helps...not sure it will come through clearly enough.

Unfortunately that is too blurry, but that is the image I remember seeing before. I'll see if I can search it out. Thanks

Rick

1978 CJ5 5.0HO/T177/D300, '86 D30/D44 WT axles, 'glass body, 31x10.5 BFG A/T, TDK galv'd frame - DD and weekend toy


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post #4 of 11 Old 03-10-2020, 06:28 PM Thread Starter
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https://i.pinimg.com/originals/8b/a0...387f974552.png

Rick

1978 CJ5 5.0HO/T177/D300, '86 D30/D44 WT axles, 'glass body, 31x10.5 BFG A/T, TDK galv'd frame - DD and weekend toy


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post #5 of 11 Old 03-10-2020, 08:21 PM
StoneTower
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I know some people have spring pads that do not have the pin hole directly over the axle and that can gain you some extra length. People have been re-drilling spring pin locations for hotrods for years. You might even be able to get some spring manufacturer to drill them where you want.
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post #6 of 11 Old 03-10-2020, 08:48 PM
Axhammer
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I’m planning on moving my front axle forward a little when I do my SOA YJ spring conversion. Since I’ll need new perches I’ll probably use something like the Barnes 1/4” perches, they have three pin holes. Thanks for posting the spring chart, that will come in handy.
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post #7 of 11 Old 03-10-2020, 10:15 PM Thread Starter
Cutlass327
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I was searching some other sites, as that chart only has springs too long for a CJ that are offset. One site mentioned MORE having the HD bracket that moved the steering box forward 1.25", and they also mentioned plates. These plates have holes 3/4" and 1" off center, with a nub to align to the perch. The holes are for the spring pin, and allow you to move the axle that 1" or 3/4".

I had thought about redrilling, but I didn't know if that would cause a weak spot in the spring, having 2 holes that close together. That would be the 2nd easiest, those adapter plates being easiest.

https://mountainoffroad.com/collecti...2-wide-springs

Rick

1978 CJ5 5.0HO/T177/D300, '86 D30/D44 WT axles, 'glass body, 31x10.5 BFG A/T, TDK galv'd frame - DD and weekend toy


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post #8 of 11 Old 03-12-2020, 06:56 PM
BrutusBlue
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The chart is definitely wrong on the YJ measurements. The YJ springs I have are a one inch outset. I wonder if other measurements are wrong.

I checked the FSJ and Chevy full size measurements against what I have and they are close enough. The chart is measuring the curved distance along the top of the springs from spring eye hole to center pin for A and B instead of straight across. For example, the Chevy leafs are called 64” springs according to the chart but they are typically known as 62” springs everywhere else since they are measured eye hole to eye hole. I don’t know why I never noticed this before but I suspect the chart is deceiving with other spring measurements that I’m not able to compare.

My YJ 4” RE leaf springs measure 451/2” from center eye to center eye on full weight in front, measured at the zerk to zerk fittings and 46” in the rear. I have my front leafs flipped around where they are forward by one inch. My rears are flipped around where they are one inch forward too. My wheel base is 94”. I could likely be at a 95” wheel base if I were to flip the rears around but I risk being too close to my tank. The rear was done this way so my diff won’t bang my gas tank under full compression. Brutus weighs more than I wanted. My additional weight seems to have pushed the overall wheel base out a bit more than I estimated, since springs grow longer under compression. Not a true good comparison for measurement on a lighter CJ5 rig but gives you something to think about. With my leaf springs and shackles I’m 5” of total lift over a stock CJ7.
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post #9 of 11 Old 03-12-2020, 07:43 PM
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The info in the chart was taken from www.generalspring.com. It says it on the chart. All of the YJ springs on the chart are listed as 22 11/16 eye to pin, and 22 11/16 pin to eye (A & B) for a total length of 45 3/8. The CJ front springs are 22 1/16 + 22 1/16 for a total length of 44 1/8. So the YJ springs will move the front axle forward 3/4. Not sure how accurate that is.

If you added the MORE offset plates you can move it another 3/4 or 1” forward, for a total of 1 1/2 or 1 3/4.

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post #10 of 11 Old 03-12-2020, 08:19 PM
CSP
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Wagoneer springs will push the front axle forward 2" vs a CJ spring. They are 2.5" wide, however, like a YJ spring is and a stock Waggie spring will give about 2" of lift over a stock CJ spring.

You don't want Dakota springs, they are 10" longer than a CJ rear spring.
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post #11 of 11 Old 03-13-2020, 08:23 PM
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I opted to move my shackle mounts and hangers forward 2"......used wagoneer springs are non-existent up here (and I would have needed a 2" lift spring to match the 4" CJ lift) and new ones were too much $$$. By moving the stock springs forward I'm also set up for an additional 2" if I ever do source some waggy springs. Either way, the tire definitely fits the wheel well better being pushed forward......I think there are pics in my build thread.

'84 CJ-17: 17" stretch, locked Toy axles, 5.5" lift, FI, AX15, D300 w/twin sticks, boatsides & junk.
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