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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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Have some questions

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Old Nov 4, 2016 | 09:18 AM
  #1  
Plendl's Avatar
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From: Iowa
Default Have some questions

Ok there are a few things that I'm thinking bout doing to my jeep. One is when driving the jeep seems to wander left and right and get an occasional bump steer. I currently have a drop pitman arm from the rough country 3.5 inch lift I put on. From what I have read the drop arm is what is causing that and it's not good to have. So I have been looking at a drag link flip kit or the yeti no drill high steer drag link. Question is they say you need 3 inch bumpstops and a new trackbar bracket. Will what I have installed on jeep from the rough country lift work?

Another question I have is I plan on putting adjustable control arms on to help correct position of axles. Can I just do a set of front lowers and add others in future or do you need to do a complete set at once or at least complete front then complete rear. I'm looking at getting the rock krawler set. Thanks for the help
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Old Nov 4, 2016 | 09:24 AM
  #2  
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From: Rockwall, Tx
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Originally Posted by Plendl
Ok there are a few things that I'm thinking bout doing to my jeep. One is when driving the jeep seems to wander left and right and get an occasional bump steer. I currently have a drop pitman arm from the rough country 3.5 inch lift I put on. From what I have read the drop arm is what is causing that and it's not good to have. So I have been looking at a drag link flip kit or the yeti no drill high steer drag link. Question is they say you need 3 inch bumpstops and a new trackbar bracket. Will what I have installed on jeep from the rough country lift work?

Another question I have is I plan on putting adjustable control arms on to help correct position of axles. Can I just do a set of front lowers and add others in future or do you need to do a complete set at once or at least complete front then complete rear. I'm looking at getting the rock krawler set. Thanks for the help
I'm running front lowers only. They've got my front axle at the correct caster, and with my 2.5 lift the axle doesn't visually appear to have shifted. I did not do anything to rear axle.
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Old Nov 4, 2016 | 09:35 AM
  #3  
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Your trackbar bracket drops from the frame? Or raises from the axle?

The purpose of running the drop/flip is to keep the draglink and trackbar running roughly parallel to each other. The drop pitman lowers the draglink from the frame, and should come with a bracket that drops the trackbar from the frame. A flip will raise the draglink from the axle, and should be run with a bracket that raises the trackbar from the axle.

Your kit came with some form of caster correction. Which type? Will you be removing or correcting it when the new arms go on?

Yes, you can run a single set of arms, or do the front then the rear. Uppers will rotate the top of the housing forward/backward and allow you to adjust the caster/pinion, lowers will rotate the bottom of the housing. If you add the second set of arms, you can move the entire axle forward/backward in the wheel well, and also get more fine tuning of the caster/pinion. Up front, lowers are generally the better choice if you only do one set. (to raise the caster, you lengthen the lowers, or shorten the uppers). Many people will do front lowers, then rear uppers, then fill in the other two sets at some point down the road. But you can do it in whatever order you like.

Last edited by nthinuf; Nov 4, 2016 at 09:38 AM.
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Old Nov 4, 2016 | 10:25 AM
  #4  
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The bracket that came with the kit raises where track bar bolts on. Ando it also came with fixed front lower arms. I wish I would have bought a more complete lift when I bought it. So far I have changed just about everything on it trying to get ride smoother. I changed shocks to Fox performance series and Springs out to evo plush ride 3 inch Springs. I have aftermarket bumpers on front and rear and with in a week or so I will be running 35s. I have also added Tera flex monster trackbars to center axles.
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Old Nov 4, 2016 | 12:49 PM
  #5  
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Is this the kit?

3.5in Suspension Lift Kit for 07-16 Jeep JK Wrangler Unlimited [609S] | Rough Country Suspension Systems®

Those fixed lowers are longer than stock, pushing the bottom of the front axle forward to raise the caster. You could easily leave them in there and just add a set of adj uppers if you want to fine tune the caster further. Then add a pair for the rear to set that pinion (rear uppers will be adjusted longer than stock, many will say they are the better choice. But like the front, either set will work). Then somewhere down the road, finish it off by adding the second rear set and replace the front lowers. Or not.

The front trackbar bracket in that kit drops from the frame, which goes along with dropping the draglink with the longer pitman. You will need to swap back to the stock pitman, remove that bracket, and get a new bracket that raises from the axle if you switch to a flip/high steer. (assuming that is the right kit and the right bracket description...)

Last edited by nthinuf; Nov 4, 2016 at 06:49 PM.
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Old Nov 4, 2016 | 01:57 PM
  #6  
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Ok thanks for the info. That is the lift I put on. Thanks for the help
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