Limiting straps XJ

Keith1138

Keith1138

Well-Known Member
Joined
Nov 18, 2015
Location
Harrisburg NC
I found out this past weekend I needed limit straps when I lost a spring on the trail.

My current plan is to weld a tabs on the body and the axel where they are in line with another. The tabs are going to be as far out as possible. Then measuring at full droop right before I loose a spring. Then subtract an inch for every foot because of stretch.


Anything I'm missing?

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Don't weld limit strap tabs to the unibody. They'll peel it back.
Instead, install those upper shock mounts that allow you to ditch the stud mount. Mount one end of the strap to the shock through bolt. The other end to a tab or whatever on the axle end.
Here's what I'm referring to
Screenshot_20200520-215518.png
 
Jody Treadway said:
Don't weld limit strap tabs to the unibody. They'll peel it back.
Instead, install those upper shock mounts that allow you to ditch the stud mount. Mount one end of the strap to the shock through bolt. The other end to a tab or whatever on the axle end.
Here's what I'm referring to
View attachment 318335
Click to expand...
Well I was trying to avoid buying new shocks...

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Jody Treadway said:
Problem is there isnt any metal thick enough to properly hold the forces exerted on the limit strap tabs up top.
Click to expand...
How about the iron man Andy track bar brace?

It mounts from both sides.

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Jody Treadway said:
Is it high enough to allow long enough straps?
Click to expand...
I would think so since it comes clearance around the oil pan.

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Have you measured yet? I have a 18” synergy, but i bet it will be too short for you.
 
You could do a small plate on the frame or just plate the whole front end. This got me by for a short time.

3bb720ec08e1c91d067d5ac035a748d3.jpg


What is your real problem you are trying to solve? If it is only the coil popping out then put in some real coil spring retainers that ruffstuff or iron rock off-road sell. For me it was my driveshaft running out of angle due to my Dana 300.


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Jody Treadway said:
@Keith1138 are doing a limit strap on each side or just a center strap?
Click to expand...
I'm doing a limit strap on each end. I have enough down travel to spit a spring and spacer. I've read those retainers will wear out springs fast.

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BigClay said:
Have you measured yet? I have a 18” synergy, but i bet it will be too short for you.
Click to expand...
18 might work depending where I mount them.

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I have never heard of the coil retainers wearing out the springs or anything. If losing a spring on flex is your issue, retainers would solve it.
Of course if excessive downtravel is causing brake line fatigue or driveline issues, limit straps would be a better fix.
 
NickMaul said:
You could do a small plate on the frame or just plate the whole front end. This got me by for a short time.

3bb720ec08e1c91d067d5ac035a748d3.jpg


What is your real problem you are trying to solve? If it is only the coil popping out then put in some real coil spring retainers that ruffstuff or iron rock off-road sell. For me it was my driveshaft running out of angle due to my Dana 300.


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Click to expand...
I have scrap plating that I was thinking about using that way the load is spread out.

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Jody Treadway said:
I have never heard of the coil retainers wearing out the springs or anything. If losing a spring on flex is your issue, retainers would solve it.
Of course if excessive downtravel is causing brake line fatigue or driveline issues, limit straps would be a better fix.
Click to expand...
Something about they stretch them out and the springs aren't designed to stretch. It was on a cherokee forum.

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Jody Treadway said:
The coil retainers only keep the bottom of the coil captive. The top of the coil stays in place via sliding on the OEM bumpstop tower.
Click to expand...
See the bottom of my coil stayed in place because of my perches and c gussest. The top of my spring was below my bump stop perches. Thats is how I lost the spring.

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I thought yall were talking about the ones that go on top of the spring also.

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Keith1138 said:
See the bottom of my coil stayed in place because of my perches and c gussest. The top of my spring was below my bump stop perches. Thats is how I lost the spring.

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Click to expand...

Well then, you either need limit straps or an appropriate length sway bar/shock combo.
 
Jody Treadway said:
Well then, you either need limit straps or an appropriate length sway bar/shock combo.
Click to expand...
I don't run any sway bars. I'm trying to avoid buying new shocks. Since using them as your suspension stops can ruin them.

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Jody Treadway said:
What the hell are you using to properly limit/tune your suspension travel, your brake lines?
Click to expand...
Nothing thats why I lost a coil spring on down travel lol. I was hoping my arms were going to bind before anything limited out.

#firstbuildprobs

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