U/L control are length 6" lift
09-14-2014 | 09:16 PM
#1
Thread Starter
JK Enthusiast
Joined: Mar 2008
Posts: 418
Likes: 0
From: St. Tammany, La
U/L control arm length 6" lift
An anyone help, running a similar set up? I have the TF 6" w upper and lower arms and trying to figure out a ball park length for the arms or see what length others are running... I'm also having an issue w the front passenger coil contacting the bump stop during normal driving... (Before you ask... My coils are seated top and bottom) any help please......
Last edited by Justinn407; 09-14-2014 at 11:00 PM. Reason: Misspelled
09-15-2014 | 02:49 AM
#2
JK Junkie
Joined: Jan 2013
Posts: 3,440
Likes: 0
From: CT
U/L control are length 6" lift
Adjust out lowers so at full bump the bump stop centers on the pad. Uppers set pinion angles.
There's no set length depending on how much lift you actually have.
W/ Most 3-4" lifts lower arms set 1/2" longer than stock does the trick. 6" I'm assuming 3/4 or so.
Front upper stock =18 3/4
front lower stock = 22 5/8
Rear upper stock = 17 7/16
Rear lower stock = 19 3/4
2007 Rubicon /2 door/6 speed
There's no set length depending on how much lift you actually have.
W/ Most 3-4" lifts lower arms set 1/2" longer than stock does the trick. 6" I'm assuming 3/4 or so.
Front upper stock =18 3/4
front lower stock = 22 5/8
Rear upper stock = 17 7/16
Rear lower stock = 19 3/4
2007 Rubicon /2 door/6 speed
09-15-2014 | 07:12 AM
#3
Thread Starter
JK Enthusiast
Joined: Mar 2008
Posts: 418
Likes: 0
From: St. Tammany, La
Adjust out lowers so at full bump the bump stop centers on the pad. Uppers set pinion angles. There's no set length depending on how much lift you actually have. W/ Most 3-4" lifts lower arms set 1/2" longer than stock does the trick. 6" I'm assuming 3/4 or so. Front upper stock =18 3/4 front lower stock = 22 5/8 Rear upper stock = 17 7/16 Rear lower stock = 19 3/4 2007 Rubicon /2 door/6 speed
09-15-2014 | 07:20 AM
#4
JK Jedi
Joined: Oct 2010
Posts: 6,222
Likes: 367
From: Southwest Reno, NV
Take the length of the factory control arm and multiply it by itself then square the amount of actual lift and add those too number together. Then take the square root of the sum of those two numbers. Set your lower arms to those lengths and use the uppers to adjust pinion and cater angles. This will put your axles back to the factory locations as far as wheel base is concerned.
It is simple math using the quadratic formula.
It is simple math using the quadratic formula.
09-15-2014 | 08:03 AM
#5
JK Freak
Joined: Jun 2009
Posts: 929
Likes: 3
From: Marshall, Texas
Take the length of the factory control arm and multiply it by itself then square the amount of actual lift and add those too number together. Then take the square root of the sum of those two numbers. Set your lower arms to those lengths and use the uppers to adjust pinion and cater angles. This will put your axles back to the factory locations as far as wheel base is concerned. It is simple math using the quadratic formula.
Thx because i have installed that same lift and had same questions.
09-15-2014 | 08:26 AM
#6
Sponsoring Manufacturer
Joined: Apr 2007
Posts: 6,824
Likes: 2
From: Utah
An anyone help, running a similar set up? I have the TF 6" w upper and lower arms and trying to figure out a ball park length for the arms or see what length others are running... I'm also having an issue w the front passenger coil contacting the bump stop during normal driving... (Before you ask... My coils are seated top and bottom) any help please......
Trending Topics
09-15-2014 | 12:55 PM
#8
Sponsoring Manufacturer
Joined: Apr 2007
Posts: 6,824
Likes: 2
From: Utah
09-15-2014 | 01:04 PM
#9
Thread Starter
JK Enthusiast
Joined: Mar 2008
Posts: 418
Likes: 0
From: St. Tammany, La
I started with the 3" with 35" tires, then added upper and lower arms, after I added all the weight of the armor I added the 2.5 spacer, moved up to 38s and now just replaced the 3" coil and 2.5 spacer with the 6" coil... I would like to upgrade to a long arm but it will be a while due to a Dana 60 swap I'm planning on...
Last edited by Justinn407; 09-15-2014 at 01:22 PM.