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Modified JK Tech Tech related bulletin board forum regarding subjects such as suspension, tires & wheels, steering, bumpers, skid plates, drive train, cages, on-board air and other useful modifications that will help improve the performance and protection of your Jeep JK Wrangler (Rubicon, Sahara, Unlimited and X) on the trail.

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Drive shaft upgrade options

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Old 01-10-2011, 04:55 PM
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Originally Posted by RedBeast
I used to live in Augusta for 5 years. I am ready to come back to the warmth . . .
Warmth??? here is a Picture of my JK I took THIS MORNING!!

Old 01-10-2011, 04:56 PM
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So in addition to the trackbar to recenter, I should replace the CAs with adjustable CAs to rotate the axels which will give be the best pinion angle?

I really rather replace then tear them apart, atleast until I have the replacements . . .
Old 01-10-2011, 04:57 PM
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That's a cool pic!!! Where in GA, northwest? That storm will be here tomorrow night . . .
Old 01-10-2011, 04:58 PM
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What size lift and tires?
Old 01-10-2011, 05:02 PM
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Originally Posted by RedBeast
What size lift and tires?
North GA ... specs are in my signature ...
Old 01-10-2011, 05:41 PM
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Originally Posted by RedBeast
So in addition to the trackbar to recenter, I should replace the CAs with adjustable CAs to rotate the axels which will give be the best pinion angle?

I really rather replace then tear them apart, atleast until I have the replacements . . .
Front lowers and rear uppers are the better choices if you only get two sets.

On Tom Woods website, look at Geometry 101 in the Tech Info area to see why you need to tilt your axles with the new shafts.
Old 01-10-2011, 05:48 PM
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I have it open as we speak . . . this stuff is a lot more technical then I am bargaining for. I teach college chemistry and this rivals it . . .
Old 01-10-2011, 06:01 PM
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Stock Driveshafts: The axle pinion and tcase output need to be roughly parallel.





Aftermarket Driveshafts: The axle pinion needs to point up at the tcase output.




Regarding the front axle - when you point the pinion up at the tcase, you get some issues with the caster and pinion angles. So for the front, you have to find a happy medium between caster (flighty handling) and pinion angle (drivetrain vibrations).



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