V8 Miata Chassis and Suspension Shocks, Springs, Steering, Control Arms, Bushings, Body Stiffening, etc.

Alignment issues can't get rid of the camber!

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Old 05-13-2015 | 09:54 AM
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charchri4's Avatar
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Jim Stainer
 
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From: Sunny SW Minnesota
Default Alignment issues can't get rid of the camber!

I replaced all my alignment bolts with NB style and was hoping to take some camber out of the back. I got the front at -1.5 where I want it...


but the back is at -1.4 on one side and the other at -2.4 if I set the thrust angle straight.



I can get -1.8 on both sides with the toe right and -1.4 if I just max out all the adjustors. That leaves about 1" toe out.

The chassis has 200,000+ miles on it and so I figured control arm bushings would probably be a good place to start and it's all coming apart next week for them. But I kind of doubt they will fix this.

Any idea how I can get less camber out of it?
Old 05-13-2015 | 10:56 AM
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cvx_20's Avatar
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Adjustable upper control arms.

Mike
Old 05-13-2015 | 11:40 AM
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Jim Stainer
 
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Great idea! But after looking at a bunch of them it looks like it would be pretty easy to just move the hole in the upper arm about 5mm out or so.
Old 05-13-2015 | 05:15 PM
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Sounds like your bushings are worn out, and allowing the lower arm to kick out too much. I'd start by replacing the bushings. That's the easiest and most inexpensive route.
Old 05-14-2015 | 08:20 AM
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Shift the sub-frame.
Old 05-14-2015 | 08:56 AM
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Jim Stainer
 
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I'm not following you Tbone. Shift it how and where?
Old 05-14-2015 | 12:24 PM
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Originally Posted by .boB
Sounds like your bushings are worn out, and allowing the lower arm to kick out too much. I'd start by replacing the bushings. That's the easiest and most inexpensive route.
+1

Replace those 20 year old, 200,000 mile bushings before jumping to any other conclusions. Some decent polyurethane bushing will really tighten the car up.
Old 06-04-2015 | 12:01 PM
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Jim Stainer
 
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So it turned out the bushings made all the difference. I'm at -1.6 on both sides of the back now with plenty of room to go either way on it. I hope to finish up the front tonight and drive it to work tomorrow.

Thanks for your help on this!
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