UCA Adjustment Help - Mustang Evolution

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Old 03-02-2016, 05:50 PM   #1
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UCA Adjustment Help

I am getting a RTR UCA and bracket this weekend, and although I'm sure its out there, I couldn't seem to find any good sources on how the adjustment should be done. I am currently lowered on Eibach Sportline spirngs, which is pretty low. I know I need a measuring tool and I need to use the drive shaft angle on both sides to figure out the angle.

My 2 main questions are:
What measurement I need to get to be within a good specification?
What is the best tool to use when measuring?

Thanks in advance!
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Old 03-02-2016, 07:14 PM   #2
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I forgot the degrees, but when I did mine I made sure to get it the same length as the one I took off and it ended up coming out to same spec when a shop measured mine. I think there is also a little bit of play in degree depending on what style of racing/driving you prefer.

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Old 03-02-2016, 08:59 PM   #3
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I believe -2 degrees is where you want to be. Go search cj pony parts YouTube. They have a good video of setting pinion angle. I believe there are a few other videos on YouTube of pinion angle too.
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Old 03-02-2016, 09:08 PM   #4
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Here's some stuff to look at

https://www.iedls.com/asp/admin/getF...&TID=28&FN=PDF

http://www.iedls.com/asp/admin/getFi...&TID=28&FN=PDF

PINION ANGLE DISCUSSIONS.docx

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Old 03-02-2016, 10:40 PM   #5
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Those links actually do help a lot. I also watched a couple videos on youtube about it that helped out. Thanks guys.
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Old 03-03-2016, 09:31 AM   #6
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-2 is MAX you want on a street driven 3 link car. any more puts the pinion bearing and/or seal at risk. I set mine at 1.9 using a simple angle finder app on my smartphone and a similar process to what is illustrated above. I used the rear half of the DS for my measure of DS angle, as that is what matters with a 2 piece shaft, not the transmission's position; then the pinion flange for the rear end's measure.

It's easy when you are able to conceptualize what you are looking at.
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Old 03-03-2016, 10:40 AM   #7
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Yes now that I am seeing the pictures it extremely easy to comprehend. I picked up a magnetic protractor today for 5$ but ill probably double check it with an app to see if there is any error. I am installing Saturday so I will let you guys know how it goes.
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