Broken tab/weld on Mojave Frame..No Warranty???

[Aonarch]

OK....Just so I understand correctly and don't go and buy different links...I "do": have the proper links that many people have refered to as the casue? I'm good to go ??

Assuming AEV spec'd the right size links, yes.

But I'd compare your rear sway bar angle to stock just to be sure.

Sponsored

 

[sandifer]

Assuming AEV spec'd the right size links, yes.

But I'd compare your rear sway bar angle to stock just to be sure.

Thanks for your input !! I kept seeing people mention "Stock Link" as the problem so I was questioning if there was another part that I was overlooking since the lift came with the correct size... Thanks..

 

[Aonarch]

Thanks for your input !! I kept seeing people mention "Stock Link" as the problem so I was questioning if there was another part that I was overlooking since the lift came with the correct size... Thanks..

The issue that I was referring to and others has to do with the sway bar angle.

So imagine with stock suspension, the sway bar hump is at the 10 o'clock position. As the rear axle and suspension cycles, the sway bar will move a bit.

Well if you lift the rear end 2" but keep the same length of sway bar links, then your sway bar angle will be off, which can then bind, or hit the rear axle, and something has to give. Typically either a link will break, or worse, the link's mount with break. It is just physics. The rear sway bar went outside of its normal range of motion.

The extended sway bar links are intended to help return the sway bar to its stock positioning, and help prevent the above scenario. Even then you are changing the geometry of the rear axle and suspension, or adding additional range of motion (Suspension travel), so you end up with the rear sway bar getting out of its range of motion. Throw in weight, lots of articulation, bigger tires, boom.

 

[Aonarch]

Extremeterrain has a: Teraflex Forged S/T Rear Sway Bar Kit.....Is that it??

I still don't see that on Teraflex's website, only for the TJ and JK. So I can't speak to it.

 

[ShadowsPapa]

The links connect the sway bar which is on the axle on these, to the frame.
The sway bar does the work. It literally twists - but the idea is that it resists twisting. One end of the axle goes down, the sway bar link pulls down on the frame.
If the sway bar is stiffer it is going to resist twisting that much more and since the end of the axle that's not moving up or down compared to the frame wants to hold the other end steady - adding a whole lot more force on the end where the axle has moved down, pulling on the link hard.

If the links are too short then extending the suspension full travel - the links will not be long enough and in this design will bust the link or the frame bracket.
Aonarch is 100% right on the sway bar needing to be level. IF it's angled up at the ends then once the thing reaches end of travel it's going to break something instead of twisting the bar like it would normally.

If the sway bar is very stiff, even with links the correct length, it's a heck of a lot more stress on the links and the area where they attach to because one end wants to come down but is being held by the other end.

Those frame brackets are made for the forces of the factory sway bar. They are engineered to take all that the factory sway bar can give 'em and a little more. Adding a bar that's a lot stiffer means as one end of the axle flexes up or down the torsional forces on that stiff sway bar are pulling or pushing a whole lot harder on those brackets.

IMO and change in height should be accompanied with the appropriate change in length of the sway bar links. Change the height of these even 1.5" due to the extremes that these are designed to articulate, IMO, you should use links that are 1.5" longer.

 

[sandifer]

The links connect the sway bar which is on the axle on these, to the frame.
The sway bar does the work. It literally twists - but the idea is that it resists twisting. One end of the axle goes down, the sway bar link pulls down on the frame.
If the sway bar is stiffer it is going to resist twisting that much more and since the end of the axle that's not moving up or down compared to the frame wants to hold the other end steady - adding a whole lot more force on the end where the axle has moved down, pulling on the link hard.

If the links are too short then extending the suspension full travel - the links will not be long enough and in this design will bust the link or the frame bracket.
Aonarch is 100% right on the sway bar needing to be level. IF it's angled up at the ends then once the thing reaches end of travel it's going to break something instead of twisting the bar like it would normally.

If the sway bar is very stiff, even with links the correct length, it's a heck of a lot more stress on the links and the area where they attach to because one end wants to come down but is being held by the other end.

Those frame brackets are made for the forces of the factory sway bar. They are engineered to take all that the factory sway bar can give 'em and a little more. Adding a bar that's a lot stiffer means as one end of the axle flexes up or down the torsional forces on that stiff sway bar are pulling or pushing a whole lot harder on those brackets.

IMO and change in height should be accompanied with the appropriate change in length of the sway bar links. Change the height of these even 1.5" due to the extremes that these are designed to articulate, IMO, you should use links that are 1.5" longer.

Thanks for the info....The AEV 2" lift kit came with links that are, I assume, 2" inches longer than stock links. Are you saying that I need to install links that are 1.5" longer than that? Which would make the links I will need to purchase 3.5" in total longer than factory? Just trying to make sure I understand what I need to do since the links I already have are not stock, they are made for the 2" lift kit?

 

[DrPlastic]

... and simple searching will show many many reports of this adequately engineered part failing.

Next ....

I did search and in all instances there were modifications done to the suspension, all of which voids the warranty. Jeep bears no legal reponsibility to repair.


Next....

 

[sandifer]

I did search and in all instances there were modifications done to the suspension, all of which voids the warranty. Jeep bears no legal reponsibility to repair.


Next....

If you don't like the thread....Stop reading it !!!




NEXT....................................

 

[ShadowsPapa]

I see where there's a sway bar relocation - can't recall the company, but they have a sway bar that goes up high and is linked down to the axle housing to get the sway bar out of the way of rocks and it would add strength to the links in the process. I suspect they mount the bar up above the spare tire area and then the links drop down to brackets put on the axle housing.
That to me seems a much better setup than any bar mounted on a rock-crawling axle housing.

 

[Bjeepz]

Here is a video from Teraflex for the JT rear sway bar system;



haven't looked at their website in a while... i am not sure if you need a minimum of a certain lift etc to run this but do recall they say it is effective to allow up to 16 inches of wheel travel!

 

[Jaxmax]

Sandifer, the AEV 2" spacer kit says it includes longer sway bar links and you say you have them, but really the best way to be sure they were put on is to measure yours, I just measured my 2021 Mojave and rear links are 10 & 5/8" from center of bolt to center of bolt. There have been posts here from people with about the same picture even, and they were lifted with longer shocks and factory rear links. Checking with AEV might also be a good idea.....Jack

 

[sandifer]

I see where there's a sway bar relocation - can't recall the company, but they have a sway bar that goes up high and is linked down to the axle housing to get the sway bar out of the way of rocks and it would add strength to the links in the process. I suspect they mount the bar up above the spare tire area and then the links drop down to brackets put on the axle housing.
That to me seems a much better setup than any bar mounted on a rock-crawling axle housing.

Hey ShadowsPapa...If you recall the part please let me know. I would be interested..

 

[sandifer]

Sandifer, the AEV 2" spacer kit says it includes longer sway bar links and you say you have them, but really the best way to be sure they were put on is to measure yours, I just measured my 2021 Mojave and rear links are 10 & 5/8" from center of bolt to center of bolt. There have been posts here from people with about the same picture even, and they were lifted with longer shocks and factory rear links. Checking with AEV might also be a good idea.....Jack

Thanks... Thats a good idea..It didn't occur to me that the dealer may not have used the longer links that came with the AEV kit but thats certainly possible.

After I had the dealer do all the work (lift,suspension,sway bar etc...) so it wouldn't void my warranty (I thought) I took it to a local 4WD shop and spent almost $1000 on correcting all the parts incorrectly installed and torqued. So its certainly possible that they never changed the links.... I'll measure tomorrow....

 

[ShadowsPapa]

RockJock Antirock rear sway bar

 

[sandifer]

RockJock Antirock rear sway bar

Awesome... Thanks

Sponsored