Coil rubs front of passenger side coil bucket - JeepForum.com

 
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post #1 of 8 Old 03-19-2013, 07:46 PM Thread Starter
rubidriver
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Coil rubs front of passenger side coil bucket

I am having the same problem this guy is having. But none of the answers he is getting are my problem.
http://www.pirate4x4.com/forum/jeep-...ing-frame.html

On the front bucket it is rubbing and popping when I take off. This is not happening on the drivers side. Anyone know why there is less room on the passenger side, but not the drivers side. I have an adjustable track bar, but do not think this is the issue. I would think it has more to do with the lengths of the control arms rather than the side to side motion of the track bar.


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your money will go farther in College Station.
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post #2 of 8 Old 03-19-2013, 07:59 PM
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Quote:
Originally Posted by rubidriver
I am having the same problem this guy is having. But none of the answers he is getting are my problem.
http://www.pirate4x4.com/forum/jeep-...ing-frame.html

On the front bucket it is rubbing and popping when I take off. This is not happening on the drivers side. Anyone know why there is less room on the passenger side, but not the drivers side. I have an adjustable track bar, but do not think this is the issue. I would think it has more to do with the lengths of the control arms rather than the side to side motion of the track bar.
Mine was rubbing like that for a while. I have adjustable UCAs and shortened them a little to push the pinion down and it fixed the rubbing.
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post #3 of 8 Old 03-20-2013, 10:31 AM
Unlimited04
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there's two factors here.

1. axle position (caster, control arm lengths, etc).
2. horrible factory tolerances.

i've measured passenger and drivers side spring buckets on several TJ's, and found wide variations. sometimes an inch difference from side to side across vehicles. stick a tape measure across the width of both sides, and you'll see what i mean.

now, axle position: I had the same spring rubbing issue as well, and minimized it by extending the lowers to regain some caster, and checking full bump to make sure the bumpstops lined up. good axle position tends to reduce the spring bow that tends to occur with the lift....but you may never fully eliminate the rub, depending how tight your bucket is.


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post #4 of 8 Old 03-20-2013, 11:23 AM
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I've had 7 sets of various springs on my jeep and had that happen with one front coil from a used set of springs. I never did swap the coil from side to side to see if the problem followed the spring. But it was my belief that it was due to something wrong with the one spring, as non of the other sets had this problem.
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post #5 of 8 Old 03-20-2013, 05:39 PM Thread Starter
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Quote:
Originally Posted by Unlimited04 View Post
there's two factors here.

1. axle position (caster, control arm lengths, etc).
2. horrible factory tolerances.

i've measured passenger and drivers side spring buckets on several TJ's, and found wide variations. sometimes an inch difference from side to side across vehicles. stick a tape measure across the width of both sides, and you'll see what i mean.

now, axle position: I had the same spring rubbing issue as well, and minimized it by extending the lowers to regain some caster, and checking full bump to make sure the bumpstops lined up. good axle position tends to reduce the spring bow that tends to occur with the lift....but you may never fully eliminate the rub, depending how tight your bucket is.
I think you are right about factory tolerances. Is there anything I can do other than buying adjustables? Im waiting a few months until I can buy 8 Savvy arms. I also have some ballistic fab coil buckets and shock perches that Im going to burn on in a few months, I just have to wait until I can go home to use my dads welder.. When I do it, I dont think Im going to tilt the buckets and shock perches back so much like the factory did and I will probably weld them an inch or two farther forward.

2005 Black Rubicon - OME 933/942 - 4" Bilstein 5100 (canister up) - JKS Adj Track Bars Front/Rear - JKS Quicker Discos - 285/75/16

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your money will go farther in College Station.
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post #6 of 8 Old 03-20-2013, 05:42 PM Thread Starter
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Quote:
Originally Posted by J03_TJ View Post
I've had 7 sets of various springs on my jeep and had that happen with one front coil from a used set of springs. I never did swap the coil from side to side to see if the problem followed the spring. But it was my belief that it was due to something wrong with the one spring, as non of the other sets had this problem.
You may be on to something. The passenger side coil looks more bent than the driverside. It may have something to do with the fact that the bottom spring seat is on the front of the axle on the passenger side and on the driver side it is to the rear. When I say "spring seat" Im talking about where the bottom end of the spring sits.

2005 Black Rubicon - OME 933/942 - 4" Bilstein 5100 (canister up) - JKS Adj Track Bars Front/Rear - JKS Quicker Discos - 285/75/16

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your money will go farther in College Station.
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post #7 of 8 Old 03-20-2013, 06:03 PM
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I think you are right about factory tolerances. Is there anything I can do other than buying adjustables?
cam bolts with have the same effect. cheap at NAPA too.

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Originally Posted by rubidriver View Post
Im waiting a few months until I can buy 8 Savvy arms. I also have some ballistic fab coil buckets and shock perches that Im going to burn on in a few months, I just have to wait until I can go home to use my dads welder.. When I do it, I dont think Im going to tilt the buckets and shock perches back so much like the factory did and I will probably weld them an inch or two farther forward.
just make sure you build it all at full bump w/ the jounce removed. you've been around long enough to know all the problems with the track bar, tie-rod, diff, etc clearances.


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post #8 of 8 Old 07-07-2016, 09:41 PM Thread Starter
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Unlimited 04 you were right. Buckets are in the right spot but the bump stop/spring mount is too far forward inside the bucket causing a rub. Use the crease in my finger for reference. Pic where my finger is pointing right is the passenger/rubbing side.
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