Help Spring bow

[Pescatoral Pursuit]

I have no idea if drop brackets will fix your issue, my guess they won't, they don't change the radius of the swing they just move the pivot point down

Lowering the pivot points aka rear control arm joints, effectively corrects axle geometry in relation to the frame, without changing control arms, as long as the additional length of the springs are commensurate to the length of drop on the brackets. What it doesn't correct are the other geometric variables such as driveshaft to pinion gear angle, sway bar, shock, track bar, etc.

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[Mays9185]

So I put Rancho geometry brackets on it so it straighten the driver side. And now the passenger side has a rearward bow. The caster looks better and the jeep doesn't wonder. So I was under the jeep I see 1 mistake I made on install. I found the the spring numbers and they are on the wrong side. I can't see that causing the issue. Does anyone think this is the issue? I do have core 4x4 sway bars on the way and my correction pads arrived today.

 

[kevman65]

So I put Rancho geometry brackets on it so it straighten the driver side. And now the passenger side has a rearward bow. The caster looks better and the jeep doesn't wonder. So I was under the jeep I see 1 mistake I made on install. I found the the spring numbers and they are on the wrong side. I can't see that causing the issue. Does anyone think this is the issue? I do have core 4x4 sway bars on the way and my correction pads arrived today.

If they have side specific springs, then yes it probably matters. Passenger side is heavier, so that spring is either a touch longer, or a touch stiffer. Either way with it on driver side you in effect have made the passenger side shorter.

That could also explain an odd twist on the front axle housing. Get the springs swapped where they go, put geo correction brackets on, tighten the LCA bolts while the JT is on the ground then see what you have.

 

[Mays9185]

That makes sense I never thought it would make a difference

 

[Mays9185]

If they have side specific springs, then yes it probably matters. Passenger side is heavier, so that spring is either a touch longer, or a touch stiffer. Either way with it on driver side you in effect have made the passenger side shorter.

That could also explain an odd twist on the front axle housing. Get the springs swapped where they go, put geo correction brackets on, tighten the LCA bolts while the JT is on the ground then see what you have.

Let me ask you this would you remove the geometry brackets when you install the new adjustable control arms or leave them on. I do will the jeep but they are no lower than the axle mounting points for the lca.

 

[kevman65]

Let me ask you this would you remove the geometry brackets when you install the new adjustable control arms or leave them on. I do will the jeep but they are no lower than the axle mounting points for the lca.

You don't need both. Either geo correction or adjustable LCA's.

 

[JTPatriot]

You can use both the correction brackets and the adjustable control arms. The adjustable arms will correct caster, which they will need to adjusted from what the manufacturer suggested length is if using the correction brackets. The correction brackets make the arms more level so it gives them better movement when hitting bumps. If you think about it the stock lower arm with stock suspension is like this -, add a lift and that lower arm goes to this / (exaggerated) with the correction brackets the idea is to get it back to this -. adding the adjustable arms then allows you to adjust castor.

 

[JTenn]

When I was looking at the pictures my first thought was the springs are reversed. You have now confirmed this condition. If this was my rig the first thing I would do is swap the springs and install the lift (and only the lift) as the instructions state. Start back at square one and follow the instructions to the T. This may be extra work on the front end but you'll be much happier with the end result if you're not having to deal with issues. Hope this corrects the issues for you, and I believe it will.

 

[Mays9185]

Well that's what I did and it actually reverse the condition. Now I'm putting in spring correction pads. As this was built in 7/20 after covid. Thinking alot of things change when they assemble it. Because I order powerstop brakes for a rubicon and the front wat fine but the rear has standard jt brakes..
I'm pretty good at this but it is kicking my ass. I looked at everything 5 to 6 times for simple mistakes. And only found the 1 spring.

 

[smlobx]

Sorry that the OP is having issues but in reading about what brand to use for my lift I kept coming back to the AEV Dualsport lift. The reason being is that it is a 100% complete kit with everything designed to work together including proper LCA adjustment brackets.
I hope you’re able to get it straightened out and functioning properly.

Here’s a picture of my install..

 

[Mays9185]

I'm to the point either order synergy springs or put it back stock.

 

[kevman65]

Did the shocks come with the springs?

When you attached the bottom of the shocks to the axle, did you have to compress the springs to get the shocks to bolt up?

 

[Pescatoral Pursuit]

The adjustable arms will correct caster, which they will need to adjusted from what the manufacturer suggested length is if using the correction brackets. The correction brackets make the arms more level

The relocation brackets adjust caster also and to use both compounds the caster angle.

 

[Mays9185]

Did the shocks come with the springs?

When you attached the bottom of the shocks to the axle, did you have to compress the springs to get the shocks to bolt up?

They came with the kit from fabtech

 

[Pescatoral Pursuit]

Well that's what I did and it actually reverse the condition. Now I'm putting in spring correction pads. As this was built in 7/20 after covid. Thinking alot of things change when they assemble it. Because I order powerstop brakes for a rubicon and the front wat fine but the rear has standard jt brakes..
I'm pretty good at this but it is kicking my ass. I looked at everything 5 to 6 times for simple mistakes. And only found the 1 spring.

Could be a bad spring. Could be on the wrong side. Could be any component added is out of spec. Could be a spring perch out of spec hidden at the factory.

It might be a good idea to start over from the beginning. I recently had to return an aftermarket bracket from a reputable brand because it was out of spec.

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