Full traction control arms
JK Freak
Joined: Aug 2007
Posts: 665
Likes: 0
From: (714)
I basically asked the same thing in a similar post, today. I just did my adj. uppers and am having a really hard time finding actual knowledge on how to go about fine tuning them....hopefully someone with the goods will chime in and help us out!
JK Jedi Master
Joined: Oct 2006
Posts: 15,133
Likes: 0
From: O HI 4 Lo
review this Fultraction Ultimate kit write up
http://project-jk.com/jeep-jk-write-...ation-write-up
step #89 covers adjusting your caster.
its really this simple, Place the scissor jack under the front yoke. It'll give you control of the axle roll.
Adjusting your Pinion angle.
Step#64
First image shows, before the adjustments. Also note the jack placement. This is what I was referring to on the front.
Second and third images show the measurements are the same.
http://project-jk.com/jeep-jk-write-...ation-write-up
step #89 covers adjusting your caster.
its really this simple, Place the scissor jack under the front yoke. It'll give you control of the axle roll.
89. Place an angle finder on the flat base of your front axle as shown in this pic and determine what your caster angle is. From the factory, your caster angle is a +4.2°. For 3" of lift and 35"-37" tires, I would recommend that you set your caster angle at about +7°-8°. And, if you set your front upper and lower control arms to the specs I have provided, your caster angle should be about there now.
Adjusting your Pinion angle.
Step#64
63. If you have a 2-door model Jeep JK Wrangler, your rear drive shaft will be at a steep enough angle that it can cause premature wear of your CV joint boots. Before installing your Full Traction Suspension rear upper control arms, I would recommend that you set the pinion up so that it’s parallel (or close to it as possible) with the drive shaft. Using the floor jack you have already positioned under the pinion and an angle finder, raise the pinion up until the degree angle on the pinion is the same as the angle reading on the drive shaft.
Second and third images show the measurements are the same.
JK Freak
Joined: Mar 2008
Posts: 783
Likes: 3
From: Southeast
In the excellent writeup (I also used when doing my FT control arms) he is replacing uppers and lowers.
If just doing the uppers like I initially did set them 1/8" shorter than stock.
That gave me caster of 5.1 on each side with the OME HD front coils and a 3/4" spacer. It drove much nicer than with the stock upper arms.
If just doing the uppers like I initially did set them 1/8" shorter than stock.
That gave me caster of 5.1 on each side with the OME HD front coils and a 3/4" spacer. It drove much nicer than with the stock upper arms.
Trending Topics
JK Freak
Joined: Aug 2007
Posts: 665
Likes: 0
From: (714)
In the excellent writeup (I also used when doing my FT control arms) he is replacing uppers and lowers.
If just doing the uppers like I initially did set them 1/8" shorter than stock.
That gave me caster of 5.1 on each side with the OME HD front coils and a 3/4" spacer. It drove much nicer than with the stock upper arms.
If just doing the uppers like I initially did set them 1/8" shorter than stock.
That gave me caster of 5.1 on each side with the OME HD front coils and a 3/4" spacer. It drove much nicer than with the stock upper arms.