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Old 08-24-2010, 04:26 PM   #1
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Removed track bar=less vibration???

First of all this is my first post, and man am I glad I found this site. Itís been a wealth of knowledge so far. Back to the ? I have been reading up on the track bar on my new 95 yj and it seems like a lot of people remove it. So I did also in the hopes it would smooth out the ride ( wish it did) but it also got rid of most all the vibration in the rear end of the jeep (the vibration was 95% of the time during acceleration). My ? is why did this solve most of the vibration?---? 2---- My jeep has a 4" lift with a 1" trany drop the driveline angle is off by about 3 degrees should I get 2.5 or 4 spacers? (might be a dump ? knowing that 2.5 would be closer to 3)----? 3---- And will the spacerís eliminate the rest of the vibration. I bought this jeep about 2 weeks ago and it has a new driveline with new u-joints and new seals diff. and transfer case. --- Any replies will be great help
---Thanks Dave

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Old 08-24-2010, 04:41 PM   #2
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the track bars won't get rid of a driveline vibration but they will make the suspension smoother, I have both of mine off. And a word of advice...Keep them for inspection

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Old 08-24-2010, 04:54 PM   #3
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Why do you think it removed most of the vibration? Could the track bar been binding something up? By some how misaligning the rear end, there was a riser that was on it because of the lift.
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Old 08-24-2010, 05:11 PM   #4
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Most lits will either say to remove the track bar or it'll have extensions for it. if you lifted it 4" without a track bar extender then the track bar would be holding the axle to the side and that would cause vibrations. And what do you mean by "spacers"?
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Old 08-24-2010, 05:16 PM   #5
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Those leaf spring wedges for correcting the drivline angle.
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Old 08-24-2010, 07:30 PM   #6
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beware, this is not a safe site to ask questions on. these guys will mess you up every time,unless you are specific and ask for answers from yj owners only. watch out pilgrim.
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Old 08-24-2010, 08:57 PM   #7
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navychief has a good point some people who have tjs give advice not realizing thier suspension is completley diffrent. you do get good advice but you need to double check every thing for yourself.
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Old 08-24-2010, 08:58 PM   #8
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What are you talking about?
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Old 08-24-2010, 09:03 PM   #9
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I Thought this was the YJ section.
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Old 08-24-2010, 09:06 PM   #10
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it is but that does not stop people who own tjs from answering.
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Old 08-24-2010, 09:08 PM   #11
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I Thought this was the YJ section.
It is they must have moved the thread. Or they are on crack
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Old 08-24-2010, 09:47 PM   #12
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Does anyone have any ideas why when I removed my track bar today the vibration reduced dramaticly? And if my driveline angle is off 3 degrees would a 2.5 degree wedge under the leaf spring get rid of the rest of the vibration? Only YJ Owners.
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Old 08-25-2010, 12:01 AM   #13
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dbkk2005, "Track Bar."
Ask yourself, "what needs 'tracking' or moving into a strait line. Tires, right?
"Track Bar."
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Old 08-25-2010, 12:04 AM   #14
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BTW: Don't trust any poster above 1000 unless it's NAVYCHIEF.
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Old 08-25-2010, 03:35 AM   #15
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Quote:
Originally Posted by dbkk2005 View Post
I have been reading up on the track bar on my new 95 yj and it seems like a lot of people remove it.
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BTW: Don't trust any poster above 1000 unless it's NAVYCHIEF.
Quote:
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I Thought this was the YJ section.

First of all this is the YJ section.
Second of all I HAVE a YJ
and Third, FNjeep. Don't go telling new people not to listen to anyone with over a 1000 posts. I can name at least 10 people with over 1000...Including myself... that know how to answer questions correctly


The Track bar on a YJ is meant to keep the axle straight, however since the front suspension utilizes leaf springs you can remove it and the leafs will hold the axle in place. It will move slightly left and right but unlike a TJ the YJ won't be all the road with out track bars. Ask any YJ owner that has removed the track bars and you get the answer "It rides better without them"

And in the event that someone doesn't like how it acts with out the track bars, then its really simple to put them back on!


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beware, this is not a safe site to ask questions on. these guys will mess you up every time,unless you are specific and ask for answers from yj owners only. watch out pilgrim.
And I understand the warning NavyChief gave him, occasionally people with TJ's and only TJ knowledge will mistakenly post, but as of yet nobody owning a TJ has posted here, let alone any incorrect information.
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Old 08-25-2010, 03:53 AM   #16
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Those leaf spring wedges for correcting the drivline angle.
Oh those spacers, the wedges would help settle vibrations if the drive shaft has too much of an angle between the t-case and the axle. If you could post a picture or two of the drive angle it would help in diagnosing the problem
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Old 08-25-2010, 06:53 AM   #17
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I am by no means an expert on YJ's , I did stay at a Holiday Inn last night..
Ok now to the serious answer..
When you lifted the jeep 4" You have offset your pinion angle as you noticed, but even with the track bar extensions you were still in somewhat of a bind due to the difference in pitch.
Taking the track bars off of a YJ will only allow it to roll side to side more in turns because the leaf springs are strong enough to keep the axle pointed in the right direction,unlike a TJ with coil springs.
Id the pinion off high or low??
If you know for a fact that you are only 3* out then you canc call any 4x4 shop and they can tell you which wedge to get to correct it and which side of the axle to put it to correct it rather low or high.
My next suggestion is a little more costly ,but more effective. Get a SYE and CV drive shaft, then you can get rid of the tranny drop which will give you more ground clearance.
I have taken the track bars ,f/r, and the sway bar off of mine and love it..
If you have to deal with inspections then you can make or buy quick disconnects for the sway bar for offroading..
This is just my .02 cents and I never look at a persons post count. I would always be patient and wait for several responses and compare them to decide what info to use.
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Old 08-25-2010, 07:13 AM   #18
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This is just my .02 cents and I never look at a persons post count. I would always be patient and wait for several responses and compare them to decide what info to use.
That's right there is the best way to decide on a solution. Good Job
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Old 08-25-2010, 07:42 AM   #19
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it is but that does not stop people who own tjs from answering.
Holy crap guys, a YJ suspension is by far a piece of cake compared to a TJ's, it's like the difference between kindergarten and college. If people can't tell the difference there is something wrong.
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Old 08-25-2010, 07:59 AM   #20
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Holy crap guys, a YJ suspension is by far superior to a TJ's, it's like the difference between coeds and grandmas. If people can't tell the difference there is something wrong.
Fixed for ya!
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Old 08-25-2010, 01:14 PM   #21
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Hmm, so after reading this i am hinting that perhaps it is my track bars that are creating that vibrating and or clunky noise on certain bumps and occasions.
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Old 08-25-2010, 01:53 PM   #22
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I see you live in NJ,, I would climb under there and check for rusted out mounts for the shocks and especially the rear shackle mounts as well as the tc skid, motor mounts.. etc..etc..
It could be the track bar bushings or the mounting for them.. I know alot of you up north deal with rusted out sections of the frame from road salt ,so these would be particular spots I would search with a sturdy screwdriver poking around anywhere that looked suspicious..
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Old 08-25-2010, 02:07 PM   #23
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omg you have no idea. I had to weld the driver side chassis where it cracked and fix a lot of mounts for the frame to body. so far so good. i basically fixed it all and tg the motor at 194k runs great. Just that occasionally i just get a quick vibrating and i feel it in the pedal when i hit certain bumps. So i might take out the TB's and see whats up.
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Old 08-25-2010, 02:18 PM   #24
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i took mine out after the first post on a forum I read about removing them and the sway bar up front.. I love the softer bumps now..lol
We YJ owners have the privelege of having leaf springs to keep the axles on track ,unlike those coil springed TJs,,lol So there is really no use for TB or SB on our jeeps other than to give a new driver more secure feeling aorund turns..
On another note it will give you more articulation while off roading..So beware of possible rubbing of the fenders and fender flares,, depending on the size of tire you have..I run 31/10.50/15 and I guess my old springs aren't worn enough to rub yet..lol
I ws rubbing the crap out of my flares and trimmed them until I get time to install my rear TJ flares and flat fender the fronts..
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Old 08-25-2010, 02:23 PM   #25
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Let me ask you another thing. When in 4x4 how far is the turn radius b4 it kinda has that binding feeling? would removing those bars also take care of that? Don't get me wrong either 4x4 works like a charm.
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Old 08-25-2010, 02:39 PM   #26
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What you are experiencing is the front tires turning(rolling) while the axle is locked in 4wd and this is from the tires taking different lines causing one to roll faster than the other..Their is no cure for it unless you have a selectable locker than you can disengage in turns then re-engage without having to take it out of 4wd..
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Old 08-25-2010, 06:28 PM   #27
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can i ask what is a track bar?
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Old 08-25-2010, 07:03 PM   #28
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Track bar keeps the axle from shifting laterally (side to side) while alowing vertical movement (over bumps). Leaf springs provide a really high degree of lateral stiffness anyway which is why a YJ can do without. Leafs are designed to flex horizontally (up and down), but unless there is a problem with shackles (weak, bent, too long), associated soft bushings, eye end mounts (rusted out) etc. trackbars are probably overkill on any YJ. Coils are totally dependent upon a track bar for lateral stability and why coils have special control arm requirments (supply fore/aft stability).

You only want the axles to go up and down, not fore and aft or left and right. Those are bad.

Still have my TB on front and until I matched the angle of the trackbar with the drag link form the steering, I had bumpsteer. Would have been easier to just remove it, but i does provide a certain amount of added lateral stability. Other than being quick (new steering box), handling is great.
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Old 08-25-2010, 07:31 PM   #29
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So I'm crawling under my yj tomorrow to take off the rear track bar. Would you guys take the front off too? I want to leave the swaybar so ill have some stability im just going to add quick disconnects. And on a scale of 1-10 how much of a difference did you notice when going around the turns?
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Old 08-25-2010, 07:33 PM   #30
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I drive with no track bars and no sway bars, and I can go around those turnpike clovers at 30mph

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