Fixing rear end vibrations with Core4x4 Tier 1 Adjustable Control Arms on 2006 RHD TJ Wrangler

[@poisonforlunch]

i love that gopro under the chassis...you can clearly see that the diff is continuosly nodding with the stock arms

[@RustyAutoholicGuy]

I'm glad you liked that camera angle. I actually bought a magnet for my GoPro that I think was rated for 150mph for a drag racing car, it's got a very strong magnet and I feel okay leaving my GoPro hanging underneath my Wrangler while I'm doing test drives!

[@toddhoffmaster6057]

Another great tutorial video on the installation of the rear adjustable control arms.

[@RustyAutoholicGuy]

Glad it was helpful! Thank you!

[@ricksnowden8408]

Looks great, a tip, always apply anti-seize to all threads and shoulders subject to water or rust.

[@JeepTJWheelin]

With a 2.25 - 2.5" lift, I only needed adjustable front lower control arms, the rest were fixed, also installed a transfer case drop kit. My '05 TJ Rocky Mtn rides excellent now.

[@DuddiesAdventure]

Awesome Job! Glad that the rear control arms solved the problem. Nothing worse than having to chase down vibration problems. Great video!

[@RustyAutoholicGuy]

Thank you Duddie's Adventure! I honestly was hoping it would improve but to have it completely fix the problem was the biggest relief!

[@Tfam305]

Best control arm video I’ve watched !

[@RustyAutoholicGuy]

Thank you so much! I'm glad it was helpful!

[@stewartwilson4204]

Good video. The orange control arms look good too.

[@Jamie-pf9jv]

Thanks for this video. Im going through the vibrations on the rear now and will be looking at getting adjustable control arms.

[@RustyAutoholicGuy]

Sure thing glad it was helpful! I’ve really enjoyed the Core4x4 control arms. Let me know if you have questions.

[@Jamie-pf9jv]

@@RustyAutoholicGuy im on a budget build. Is there a budget version you can recommend. I only have the 2.5L 4cyl auto 3.5 coil spacer. Just had the shocks replaced with oem replacements. My next step is the adjustable control arms. Wheels are 2005 moabs with 285/75/16s. Rides smooth, just need to fix the drive shaft vibration. Everything else is stock

[@RustyAutoholicGuy]

I went with these because I was on a budget as well. You could just replace the rear to fix your driveline vibrations for now. Made in the USA and lifetime warranty as well. I don’t know if any that are cheaper. Just look at their Tier 1 set.

[@Jamie-pf9jv]

@@RustyAutoholicGuy Excellent . Thanks!

[@tedwebster1606]

This is great, I need to check mine too!! Thanks for the great video!!

[@RustyAutoholicGuy]

Thank you so much Ted! I'm glad you liked the video!

[@Bordashblades]

I have the same kit for my '98 TJ, first problem is rear upper bolts seized and will likely need to cut them out.

[@your2nd]

Yeah they are great , mine are gray not blue to match the color of my jeep but they match the DV8 Dif covers.

[@geoffheaney5114]

Gday ☺I boughtMaxpeedingrods for my 98 and the RUBBERS in the rear seem very loose •Is that normal ?Also how tight should the original Bolts be in the new Bushes ?They seem quite loose as well 🙄Really need some clarity here ☺

[@RustyAutoholicGuy]

Mine were tight and not loose at all, since this deals with the geometry of your axles, I would find new hardware so that the bolts are tight to install so you don't have any give between the axles and the frame.

[@Maxxis1941]

Where and how did you relocate the brake line that was attached to the stock upper bracket?

[@robertdoran7387]

This is EXACTLY the video I needed to see today. Just had an SYE and driveshaft upgrade on my 2003 Wrangler but the shop didn't change the axle angle. I've been shopping around for adjustable rear control arms and am looking at Core 4X4. My only question is, do you have a lift and if not, would a 3" lift offer more clearance between the diff and gas tank?

[@robertpc100]

what problem did you have with upper control arms hitting the gas tank? or does most everyone have a problem wth something else hitting the gas tank? thanks a million friend.great job!!!

[@Maxxis1941]

Most probably the differential housing because it's moved back slightly. Not an issue with a Dana 35, but with a 44 it's a tight fit even at stock arms length.

[@jasonl3445]

Thanks man I'm about to do the same :)

[@RustyAutoholicGuy]

No problem 👍, hope it goes well!

[@patrickwines9551]

Nice work man, did you slather the inner threads with antisease or grease? Mine would always rust together untill I added a grease zerk to the top side.

[@RustyAutoholicGuy]

Hey Patrick thank you so much! Yeah I did put some grease on the bolts before installing the control arms!

[@Maxxis1941]

@@RustyAutoholicGuy Suggestion: tap a grease fitting into both bushing ends on the top side. Prolong the bushing life even though they have a lifetime guarantee.

[@robertpc100]

great job.did you raise jeep with suspension lift? I noticed you had SYE and new drive shaft so i have a tj thats a 99 with 2 in. lift and thought id get at least uppers control arms to raise front of my pumpkin to better align my driveshaft.do you think i can get by for now with just getting the rear uppers? i dont have any vibrations but im sure it would help with wear and tear in future.Later i want to add SYE and new driveshaft, but one shop told me if i didnt go any more than 2 in. id be ok but i know my driveline is off some.so looking for a cheap but effective set of adjustable upper control arms to start.I havent checked prices on the core type.Any idead appreciated.sincerely awesome job. thank you

[@RustyAutoholicGuy]

Hey Robert, sorry for the late reply, been a crazy week! So no I did not raise my suspension HOWEVER I did raise the drivetrain so I had a steeper angle on my driveshafts. I designed it so I basically have a flat bottom on my TJ. All of my driveline components are above the bottom of my frame rails if that makes sense. If you have any kind of lift, I would highly recommend the adjustable control arms to get all your pinion angles correct, after driving my setup with the pinion angles being off, I can't understate of much better the ride was once I had the correct geometry in my driveshafts. Let me know if you have any other questions!

[@robertpc100]

@@RustyAutoholicGuy awesome, thank you

[@valenjtine]

Great video. Gonna get these soon. What did you end up doing with your brake lines/brackets on the rear uppers? Zip tie to frame? Still happy with Core 4x4? Thanks ✌️

[@RustyAutoholicGuy]

I honestly can’t remember I need to go underneath my TJ and check. Still very happy with the Core4x4 adjustable control arms, really made my TJ feel more planted on and off the road.

[@valenjtine]

@@RustyAutoholicGuy thanks! Guess I’ll pull the brackets & zip tie. 👍 Ordered & looking forward to dialing them in.

[@erikcaldwell2913]

Can you adjust , adjustable control arms, after they are installed, or do you have to adjust them beforehand?

[@RustyAutoholicGuy]

Yes but you still have to remove the bolt from one end of the eyelet to spin the control arm to make adjustments.

[@erikcaldwell2913]

@@RustyAutoholicGuy 👊🤓👍

[@robertpc100]

and how far do you think you lengthened the upper arms.i know you said you started with 1/2 in. and looked like you ran it on out.im doing same with a rear dana 44 and wld. like to get it close the first time. thank you

[@RustyAutoholicGuy]

Hey Robert, first off sorry for the late reply I've been on vacation and just am getting back online with everything. The thing with my setup is I had raised my entire driveline and my driveline as also shifted forward quite a bit as well so I would say start at ½" and then check once your Jeep is under it's own weight. Good luck and let me know if you need any other information!

[@robertpc100]

@@RustyAutoholicGuy thank you brother and friend

[@jamesdodson9417]

Could you feel the vibration in your shifter ?

[@fnxgamer04]

How much of a clearance issue was there afterwards that you had to shift the gas tank back?

[@RustyAutoholicGuy]

After I pushed the gas tank back I never had any more clearance issues.

[@caitlinblake8817]

What kind of bushing did you get?

[@RustyAutoholicGuy]

I went with the rubber bushings, I wanted to reduce the vibrations from the diesel engine as much as possible.

[@caitlinblake8817]

@@RustyAutoholicGuy I’m looking at getting the rubber ones as well. Kinda nervous to replace these myself but it didn’t look too difficult.

[@97jettatrek]

With a double cardan joint setup, your pinion angle should be 1-2 degrees LOWER than your driveshaft angle, not equal.

[@RustyAutoholicGuy]

I'll go take and look and double check. Thanks for letting me know!

[@97jettatrek]

@@RustyAutoholicGuy I love the Kubota swap BTW. Great job!

[@RustyAutoholicGuy]

Thank you so much! I'm really looking forward to taking this on some trails to see how this Kubota diesel engine performs with it's low end torque.

[@jerrywhalen159]

Stock suspension and your pinion angle is that far off I don't understand

[@RustyAutoholicGuy]

I diesel swapped my TJ and moved the entire driveline so that it was above the bottom of the frame rail which created the steep angles. I installed a Kubota V2403 turbo diesel, AW4 automatic transmission, a Eco Box doubler and NP231J. I moved the entire drivetrain forward and up to accommodate for the doubler and getting everything tucked up above the bottom of the frame-rails.