Mopar lift bowed springs - One coil rubs on tie rod

[rubiconman]

I am running Rock Krawler 2.5" coils front and rear in combination with the correction pads. They provide less lift than the Mopar springs IMO. The trick here is that you are most likely going to need to replace both front and rear coils as a set, I would not replace just the front coils with another brand.

My opinion: Remove anything you added (RK pads, etc.) and take it back to the dealer and make them make it right. This is a warranty/installation issue. This will also ensure the Jeep warranty on your lift is intact and the dealer wont give you BS in the future.

Besides the correction pads, would I need any other spring related hardware? I see there is a RK coil kit, and also the coils only. Do you think the (front) RK07727K - Diesel/Hemi Swapped - 2.5" and the (rear) RK07843K - DIESEL - 2.5" coil kits would be the correct kits for my application?

I thought about that, but what are they going to do? Keep my jeep for a couple days, have the same guy who let it leave like this 'fix' it by getting it to where it has just enough room to not rub. Even then, they can only get it as 'right' as the kit was designed. The more I think about the kit requiring non oem parts to straighten the coils and not providing a correction for the tracking, the more I think this kit is sub par in design.

I really liked the idea of getting a manufacturer approved/designed kit that was functional, reliable, and preserved the warranty... but so far it has been a bit disappointing. I am learning a lot about my first jeep though!

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[cavguy]

Besides the correction pads, would I need any other spring related hardware? I see there is a RK coil kit, and also the coils only. Do you think the (front) RK07727K - Diesel/Hemi Swapped - 2.5" and the (rear) RK07843K - DIESEL - 2.5" coil kits would be the correct kits for my application?

I thought about that, but what are they going to do? Keep my jeep for a couple days, have the same guy who let it leave like this 'fix' it by getting it to where it has just enough room to not rub. Even then, they can only get it as 'right' as the kit was designed. The more I think about the kit requiring non oem parts to straighten the coils and not providing a correction for the tracking, the more I think this kit is sub par in design.

I really liked the idea of getting a manufacturer approved/designed kit that was functional, reliable, and preserved the warranty... but so far it has been a bit disappointing. I am learning a lot about my first jeep though!

From the RK site you would need:

Front (Springs only - you have the pads): RK07727P
Rear (Springs with correction spacer): RK07843K

If you go this route might as well order a adjustable track bar for the front: RK06187HD
Up to you if you want the rear track bar relocation kit too: RK06718K

I used the Mopar lift shocks on my JLU, so you should be fine with those.

Honestly it should be an easy fix for the dealership, either the upper part of the spring is not seated correctly in the pad, or they need to order new springs. This is definitely not normal for the Mopar kit and something is wrong. But you are correct, it may take them awhile to order the new springs (assuming that is what the issue is) or for the tech to "figure it out".

I still vote for let them "figure it out".

 

[rubiconman]

From the RK site you would need:

Front (Springs only - you have the pads): RK07727P
Rear (Springs with correction spacer): RK07843K

If you go this route might as well order a adjustable track bar for the front: RK06187HD
Up to you if you want the rear track bar relocation kit too: RK06718K

I used the Mopar lift shocks on my JLU, so you should be fine with those.

Honestly it should be an easy fix for the dealership, either the upper part of the spring is not seated correctly in the pad, or they need to order new springs. This is definitely not normal for the Mopar kit and something is wrong. But you are correct, it may take them awhile to order the new springs (assuming that is what the issue is) or for the tech to "figure it out".

I still vote for let them "figure it out".

I already got the Teraflex front and rear adjustable track bars.

I cannot tell from RKs site if they have the springs in stock. I am looking for an etailer that has them right now.

 

[hoag4147]

That's interesting. I did not think about that. The AEV brackets are advertised as working with stock LCAs, on vehicle's with 2" - 4.5" lifts. I assumed they meant the stock LCA from the lift kit. Thanks for this tidbit!

If you want to keep AEV brackets I would swap stock LCAs back in. The extra length of Mopar lift LCAs seems to pushing axle forward.

 

[Beachcomber72]

Why didn't you just go back to them and have them figure it out? You paid for it. Other than that, I don't have an answer.

This…

Period, end of story.

 

[rubiconman]

This…

Period, end of story.

I disagree. I would still end up with bowed springs and off center axles. I made a mistake in going with this kit. I cannot go back to the dealer and demand they redesign the kit.

 

[cavguy]

I already got the Teraflex front and rear adjustable track bars.

I cannot tell from RKs site if they have the springs in stock. I am looking for an etailer that has them right now.

https://www.northridge4x4.com/part/...oil-spring-2-5in-hemi-swapped-and-diesel-only

https://www.northridge4x4.com/part/coil-springs/rk07845-rock-krawler-2-5in-rear-coil-spring-kit

 

[hoag4147]

I already got the Teraflex front and rear adjustable track bars.

I cannot tell from RKs site if they have the springs in stock. I am looking for an etailer that has them right now.

If you are looking to swap out to RK hit up Marcus @River City Offroad he usually has RK stuff on hand

https://www.rivercityoffroad.com/?amp=1

 

[cavguy]

If you want to keep AEV brackets I would swap stock LCAs back in. The extra length of Mopar lift LCAs seems to pushing axle forward.

This is also very possible as well. I have not seen this combination in person, but the logic sounds right.

 

[Beachcomber72]

I disagree. I would still end up with bowed springs and off center axles. I made a mistake in going with this kit. I cannot go back to the dealer and demand they redesign the kit.

How’s that? If the dealership ordered the right Mopar kit then you wouldn’t have bowed springs. They need to make it right! The job that is.

 

[rubiconman]

https://www.northridge4x4.com/part/...oil-spring-2-5in-hemi-swapped-and-diesel-only

https://www.northridge4x4.com/part/coil-springs/rk07845-rock-krawler-2-5in-rear-coil-spring-kit

If you are looking to swap out to RK hit up Marcus @River City Offroad he usually has RK stuff on hand

https://www.rivercityoffroad.com/?amp=1

Thank you both!

What is the difference in the regular coil springs and the triple rate versions?

 

[hoag4147]

This is also very possible as well. I have not seen this combination in person, but the logic sounds right.

I believe @DanW went with drop brackets and tried both with and without Mopar lift LCAs and went back to standard LCAs. Maybe he will weigh in

 

[rubiconman]

How’s that? If the dealership ordered the right Mopar kit then you wouldn’t have bowed springs. They need to make it right! The job that is.

It's the correct mopar kit, per mopars website. The manual even says the coils are supposed to be bowed.

 

[rubiconman]

I believe @DanW went with drop brackets and tried both with and without Mopar lift LCAs and went back to standard LCAs. Maybe he will weigh in

That will be my first order of business in the morning.

 

[hoag4147]

That will be my first order of business in the morning.

Good luck man. I’m around this weekend if another set of eyes would help.

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