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Old 10-24-2010, 09:47 AM   #1
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Track Bar??

I had a friend tell me the other day to take off the track bars on the front and rear of my 94' yj. He said the track bars are not needed since it is leaf spring and they become an issue when off roading. I did notice that is was really loose so i tightened it up a little but i was wondering if this would be a good idea or not?

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Old 10-24-2010, 10:17 AM   #2
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I am not saying you can't run without them. But Jeep and many other Mfg. do use track bars in conjunction with leaf spring suspensions. They don't just add the track bars as an afterthought because they need to get rid of a stock pile of them.lol So to make a blanket statement about track bars and all leaf spring suspensions like your friend did would be a disservice. You can try driving your YJ a little without them and see how it handles.
Are you having issues with your YJ where you think removing the track bar will help?

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Old 10-24-2010, 10:39 AM   #3
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Not having any issues but i i know i will be using it more for off road than anything else. I just didn't know if it would help with articulation or not. He runs his without the track bars on. I just want to make sure if i did take them off to try the ride and see if i feel a difference, Would it mess anything up or tweak anything under the jeep. But i do understand the stock pile comment.lol
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Old 10-24-2010, 10:59 AM   #4
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Removing them will increase the ride quality and should be beneficial to articulation. Since the track bar is a fixed rod with only pivot points (it doesn't move in or out) it limits how high or how low your suspension can travel.

Say you hit a speed bump: Your axle will only move upwards until the track bars angle starts to push the axle to the _____ (left for the rear and right for the front) and can't move any more die to the leaf springs and shackles reaching their "side to side" movement limit

Personally I think that wears out the shackle bushings faster than running no track bar at all
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Old 10-24-2010, 12:16 PM   #5
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You should be fine without the track bars. I removed mine over a year ago and have not looked back. The CJ Jeeps never had them. The reason that Jeep included them on the YJs was due to government regulations on safety and roll over concerns. You will get a little more body roll, but not much. Take them off and drive around town. Try some corners that you need to slow down on and see how you like it. If it is not for you, simply put them back on.

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Old 10-24-2010, 12:21 PM   #6
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Yea...going to try the ride and see how it feels. Thanks for all the input.
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Old 04-19-2013, 03:16 AM   #7
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hey i know this is a wrangler forum and im sorry but i really need some help, i have an 1990 4.0L I6 4x4 MJ comanche pioneer. aka jeep truck. and i also have about 3- 3 1/2 inch lift on her right now, im currently running her with the sway bar disconected and have no issues, im wondering if since i have leaf springs in the rear do i really need the track bar? i drive on the roads and go off road, but i dont drive like a moron on the road... so what do yall think, any help would be great. all the people i know are like "YOU HAVE TO HAVE A TRACK BAR OR YOULL DIE!!!!" so they arnt really any help... please help me thank you...
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Old 04-19-2013, 03:17 AM   #8
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also if you have an answer feel free to email me at ussoldier312@yahoo.com thank you, really need to know ASAP
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Old 04-19-2013, 06:41 AM   #9
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An MJ is like a XJ right, in that it has coils up front? Coils don't control side-side movement like leaf springs do, so no track bars or swaybars will get it really squirrelly. Coils really do need them. Now, I'm not sure if taking the track bar off the rear will affect it or not, since It's leaf springs back there.
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Old 04-19-2013, 07:28 AM   #10
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Quote:
Originally Posted by JeepMarine312 View Post
hey i know this is a wrangler forum and im sorry but i really need some help, i have an 1990 4.0L I6 4x4 MJ comanche pioneer. aka jeep truck. and i also have about 3- 3 1/2 inch lift on her right now, im currently running her with the sway bar disconected and have no issues, im wondering if since i have leaf springs in the rear do i really need the track bar? i drive on the roads and go off road, but i dont drive like a moron on the road... so what do yall think, any help would be great. all the people i know are like "YOU HAVE TO HAVE A TRACK BAR OR YOULL DIE!!!!" so they arnt really any help... please help me thank you...
When there are leaf springs involved, the track simply serves as a safety device to prevent rollovers, per government safety standards. If you have rear leaf springs as stated and 3 1/2 inch lift, if no track bar relocation bracket was installed in order to lengthen the track bar mount locations, The track bar is more than likely pulling the axle to one side or the other due to the lift causing the mounting points to be further apart. There is typically about a inch mounting slot on one end of the track bar to allow minimal movement. My YJ had 1 1/4 inch lift shackles only on the front when purchased, it was causing the axle to pull to the left due to the lift increase, I actually had to jack the Jeep up by the right side axle tube to tilt the axle enough to get the mounting bolts out. I removed it, now the Wrangler handles and drives better. My Rear Track bar is still on after removing the front lift shackles and installing 2.5 inch spring lift, but I relocated the track bar mount on the rear axle tube to allow for the length change, and to re-center the mounting slot. The front axle mount is not moveable, as it is actually part of the axle casting, not welded on the axle tube like the rear.

I would advise the same thing as previously mentioned. Take the track bar off, and drive it around town take a few corners at safe speeds and see how it feels to you. If it has too much body roll in the corners for your taste, then put it back on. But, if you cannot get the mounting bolts in freely while the weight of the vehicle is on the tires, then your track bar is too short for the lift kit and will cause some minor handling issues compared to a stock lift, due to axle being pulled to one side or the other.

Also, you may be able to purchase a track bar relocation bracket for the 3.5 inch lift, and keep it on with no issues.
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Old 04-19-2013, 07:43 AM   #11
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I pulled mine with no ill effects. If you drive your Jeep on the road regularly, you'll probably want to leave your sway bar on... but both track bars can go.
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Old 04-19-2013, 10:19 AM   #12
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Threw mine away, they are NOT required on leaf springs. The only leaf sprung vehicles I have ever seen a Track Bar on is the YJ, as well as some of the larger Ford F-250 vehicles made with heavy towing in mind.

Since the YJ is not capable of heavy towing, they will serve you no good purpose. Infact, they can actually cause issues with your suspension components, it would be an all too familiar scene if your brackets broke right off, or other damage occurred.

The way leaf springs flex and articulate is VERY different than a coil sprung suspension. When the upper side of the axle flexes up, it tucks in under the fender. The bottom side swings out and pivots back underneath the Jeep. This flexing motion is identical in either direction, and the Track Bar prevents that flexing from happening. The Leaf Springs can center the axle incredibly well on their own. Any educated Jeeper does not have Track Bars combined with his Leaf Springs.

On a Coil Spring vehicle, a coil spring offers very little to no resistance from left to right, front to back. This is why they have control arms as well as a Track Bar. 2 upper control arms, 2 lower control arms- these effectively prevent the axle from twisting, as well as keep it from moving forwards or backwards. The Track Bar keeps the axle from moving left or right underneath, laterally that is.

You can see the differences in how a coil spring suspension flexes and how a leaf spring suspension flexes in these pictures:



Here you can see how the upper side is tucked in underneath the fender, and how the bottom side has swung out.



Here you can see how the coil spring is free to flex in any direction it wants, because it does not offer the same resistance a leaf pack does. The flexing may seem identical, but a Track Bar does not allow the axle to flex in either direction in a parallel sense. One side will always be pulled in regardless if it is being pushed up, or down.

A Sway Bar on the other hand is an entirely different component. It only allows the axle to flex vertically, parallel on both sides. This basically allows the Jeep to stay relatively level, even going around a corner. Whether or not you remove this component is entirely up to you, but I will say this:

-Some of us remove it entirely
-Some of us use Quick Disconnects
-Some of us never remove it

What you choose to do is up to you, but I highly recommend Quick Disconnects. They allow you to disconnect the swaybar when offroading, then allow you to reconnect it quickly when transferring back to road driving. It allows the front end to flex fully.
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Old 04-19-2013, 10:26 AM   #13
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I feel the same way as mentioned before. It's all up to your liking while driving down the street. I took my track bars (front and rear) off as well as the sway bar and I think my Jeep handles much better. Since when I installed my 4" Pro Comp lift, I had my daughter jump on the rear bumper just to get the track bar to line up correctly. No good! So they had to go.
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Old 04-19-2013, 10:30 AM   #14
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Quote:
Originally Posted by Xpress View Post
Threw mine away, they are NOT required on leaf springs. The only leaf sprung vehicles I have ever seen a Track Bar on is the YJ, as well as some of the larger Ford F-250 vehicles made with heavy towing in mind.

Since the YJ is not capable of heavy towing, they will serve you no good purpose. Infact, they can actually cause issues with your suspension components, it would be an all too familiar scene if your brackets broke right off, or other damage occurred.

The way leaf springs flex and articulate is VERY different than a coil sprung suspension. When the upper side of the axle flexes up, it tucks in under the fender. The bottom side swings out and pivots back underneath the Jeep. This flexing motion is identical in either direction, and the Track Bar prevents that flexing from happening. The Leaf Springs can center the axle incredibly well on their own. Any educated Jeeper does not have Track Bars combined with his Leaf Springs.

On a Coil Spring vehicle, a coil spring offers very little to no resistance from left to right, front to back. This is why they have control arms as well as a Track Bar. 2 upper control arms, 2 lower control arms- these effectively prevent the axle from twisting, as well as keep it from moving forwards or backwards. The Track Bar keeps the axle from moving left or right underneath, laterally that is.

You can see the differences in how a coil spring suspension flexes and how a leaf spring suspension flexes in these pictures:



Here you can see how the upper side is tucked in underneath the fender, and how the bottom side has swung out.



Here you can see how the coil spring is free to flex in any direction it wants, because it does not offer the same resistance a leaf pack does. The flexing may seem identical, but a Track Bar does not allow the axle to flex in either direction in a parallel sense. One side will always be pulled in regardless if it is being pushed up, or down.

A Sway Bar on the other hand is an entirely different component. It only allows the axle to flex vertically, parallel on both sides. This basically allows the Jeep to stay relatively level, even going around a corner. Whether or not you remove this component is entirely up to you, but I will say this:

-Some of us remove it entirely
-Some of us use Quick Disconnects
-Some of us never remove it

What you choose to do is up to you, but I highly recommend Quick Disconnects. They allow you to disconnect the swaybar when offroading, then allow you to reconnect it quickly when transferring back to road driving. It allows the front end to flex fully.
I agree completely, good write up !!

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