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Old 03-02-2012, 06:07 PM   #1
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Adjusting rear control arms

Completed my tummy tuck and will be installing the Novak cable shifter this weekend. I will also adjust the upper control arms to dial the pinion angle in. Do I need to adjust the lower control arms? I just want to do all this at once and not having to go back to work on it again.

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Old 03-02-2012, 06:28 PM   #2
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To do it correctly you should adjust both but you can get away with only the uppers. Alot of people do. I'll see if I can find the exact specs of how to because one they both can affect pinion angle but when you change one you change the wheel base somewhat. so you adjust the arms so you have the same wheel base and the correct pinion angle, I believe.

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Old 03-02-2012, 06:37 PM   #3
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Cool...thanks. I just want to make sure that I am doing it correctly.
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Old 03-02-2012, 06:40 PM   #4
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Yea, the lowers pulls your axle forward or backwards and the top adjusts your pinion angle. Pinion needs to b 2 degrees below the drive shaft angle. Put an angle finder on the drive shaft and then on the gasket surface of the rear cover. That flat surface is exactly 90 degrees off of your pinion so you can set it, minus 90. Say your drive shaft is 15 degrees. Set the pinion at 13 which would read 103 on the angle finder when on the gasket surface
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Old 03-02-2012, 06:47 PM   #5
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This is for a CV shaft or a stock shaft btw? the way you set your angles is different. I assume its CV because you have a tummy tuck but it is possible to TT a stock height jeep with a stock DS.
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Old 03-02-2012, 07:01 PM   #6
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Quote:
Originally Posted by GoldenSahara00 View Post
This is for a CV shaft or a stock shaft btw? the way you set your angles is different. I assume its CV because you have a tummy tuck but it is possible to TT a stock height jeep with a stock DS.

Here is what I have installed so far.

UCF ultra high clearance tc skid
TW cv ds
Rear upper and lower Savvy control arms
AA sye
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Old 03-02-2012, 08:01 PM   #7
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Go about 1/3 of the way down to the "double cardan (near) constance velocity..." section

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Old 03-02-2012, 08:09 PM   #8
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If this is the first time adjusting things, I'd pull your springs and check everything out as you adjust your arms. Adjust for pinion angle, and then cycle your axle (check at full bump, droop, and everything in between) to see if you need to move your axle forward or back at all. Shouldn't be too difficult.

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