Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

A weird rear end question

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Old Dec 8, 2010 | 05:29 PM
  #11  
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Originally Posted by musnicki
It's too cold right now, but this weekend I will jack it up and do some measurements. Btw, like stated here, it drives great and there no evidence of any slipage where the U bolts grab onto the axle. It just bugs me that that tire sticks out an inch more than the other side. So much that I had to adjust the shocks more to raise the back end up so that the tire doesn't rub. I'm asking and want to see what I need to do to fix it because I traded out to a 22 gallon gas tank (as in June or July Mustang Monthly) and now the added weight when full causes some wheel rub on that side when I hit a bump with a full tank.
Too cold in Pinehurst? But it's always a beautiful day in Pinehurst
Old Dec 8, 2010 | 05:46 PM
  #12  
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omg...Fayetteville this week dropped down to the teens! wtf? I would have never left Massachusettes if I wanted to live in cold weather like that.
Old Dec 9, 2010 | 12:50 AM
  #13  
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First of all, check the wheel offset. make sure that you have matching wheels. you can also do this by swapping them from side to side.

Also, since you are running a 4 link chances are you have a panhard bar. the adjustment could be out on it which would push the rear end to one side or the other.
Old Dec 9, 2010 | 12:55 AM
  #14  
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oops, no panhard bar there. measure from the backing plate to the mounts and make sure they are the same.
since this system is a total bolt in unit it should not be hard to move it around to fit correctly.
Old Dec 9, 2010 | 05:58 PM
  #15  
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I have a triangulated 4 link in another vehicle and I do have some lateral adjustment. The problem is you can only go so far before you begin to bind up the trailing arms.

If you have bushings, I would just live with it. If you have hem joints you should be able to get a 1/2" out of adjusting the top bars (triangle).

What king of joints are you working with?
Old Dec 10, 2010 | 06:31 PM
  #16  
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I took it out of town today and he said it was installed incorrectly. They're going to take it apart on Monday, break the welds that meet with the rear end, center it and put it back together. The whole year I have been like wtf, I had to jack the back end up so that it almost looks silly so that the right side tire wouldn't rub. I only have 235's and I know a lot of mustang owners can fit 255's with out much modification. It's been killing me.

Thank you for the help here though, I did everything that everyone here mentioned, measured from here to here and so on, you can see my first post after I edited to add pictures.
Old Dec 10, 2010 | 07:40 PM
  #17  
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There should be a rod that holds the axle in place side to side.

There SHOULD be an adjustment to get things back into shape.

I can not believe that this shop took 10 freaking months to do a ****ty *** job like that...

Amazing.

That NEEDS to be fixed, besides the rub, it just looks dumb. If you were in Little Rock I would fix that for you n/c.

There is likely an issue where there is not enough adjustment for one reason or another, but then again, any shop that would turn out work like that, no telling what they did.

I don't know how your setup works, but on my car the rod that runs diagonally from one side of the frame to the edge of the axle adjusts the axle side to side.

You should not have a travel issue with the control arms as an inch of offset only requires 1/2" of movement to get straight.



How much did they charge you for that?

I has to knows....

Last edited by JMD; Dec 10, 2010 at 07:42 PM.
Old Dec 10, 2010 | 09:22 PM
  #18  
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Originally Posted by JMD
There should be a rod that holds the axle in place side to side.

There SHOULD be an adjustment to get things back into shape.

I can not believe that this shop took 10 freaking months to do a ****ty *** job like that...

Amazing.

That NEEDS to be fixed, besides the rub, it just looks dumb. If you were in Little Rock I would fix that for you n/c.

There is likely an issue where there is not enough adjustment for one reason or another, but then again, any shop that would turn out work like that, no telling what they did.

I don't know how your setup works, but on my car the rod that runs diagonally from one side of the frame to the edge of the axle adjusts the axle side to side.

You should not have a travel issue with the control arms as an inch of offset only requires 1/2" of movement to get straight.

How much did they charge you for that?

I has to knows....
The Rod and Custom units don't have a panhard bar. I have one in pieces on the garage floor otherwise I would post a pic.
Old Dec 13, 2010 | 09:13 PM
  #19  
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Here's an article about the guy who did my rear end.

http://www.wral.com/5onyourside/story/8489292/

Send me a PM if you want details.

I got my car back at least. And I was in Iraq at the time, I think I'm going to cry and if I don't my wife will, looking back at all this.

James
Old Dec 13, 2010 | 09:53 PM
  #20  
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Ok, went to the RC Motorsports website and from what I am able to see, I want to think that if a person were to shift the "cross-member" that holds the rods that go to the pumpkin, the whole thing would straighten up....

It looks like there might be some adjustment there, or at the least, there appears to be enough room to make some new holes to make this "adjustment"....

The lateral movement of the axle is entirely controlled by the placement of these short control arms.

This being the case, it would not be a big deal to get this straightened up.

And btw, James, there is no shame for you for what this d/h did, the shame is all for him.
Attached Thumbnails A weird rear end question-make-a-save-on-the-link-.jpg  

Last edited by JMD; Dec 13, 2010 at 09:58 PM.



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