Results 1 to 10 of 10

Thread: JBA Front UCA 6.7 Installed

  1. #1
    Senior Member Getting Dirty thance's Avatar
    Join Date
    Jul 2012
    Posts
    167
    Rep Power
    10

    JBA Front UCA 6.7 Installed

    I installed the the JBA Front Upper Control Arms this weekend. They are much more stout than stock!

    Did not have any issues with the install, everything fit well, just leave yourself lots of time. I spent about 4 hours all together, with most of that time dedicated to monkeying the upper bolts back behind the springs. Found the best method was just to use a pair of channel locks to thread the bolts out of the bushings and mounts once the nut was off. Tedious, but it worked. It does mark up the bolts quite a bit, so hopefully that won't come back to bite me later on

    On the install, I did save some hassle by installing one of the bolts backwards (from the outside in and backing it with some washers so it stayed away from the spring).

    Overall, everything went very well, just leave plenty of time if you're not a professional mechanic.

    Front is now nice and quiet, with the clunking, bucking and kicking caused by the extremely worn stock ball joints a thing of the past.

    Click image for larger version. 

Name:	XK_JBA_UCA_67_Left.jpg 
Views:	906 
Size:	75.7 KB 
ID:	2301Click image for larger version. 

Name:	XK_JBA_UCA_67_Right.jpg 
Views:	571 
Size:	76.8 KB 
ID:	2302
    Last edited by thance; 06-23-2014 at 02:32 PM.
    2010 5.7 QTII - OME HD w/ 3/8" spacers up front and F150 MLL in rear, JBA UCA 6.7, JKS 2034 Front Quick Disconnects, Gas Tank Skid Mod, PinchWeld Mod, 1.5" SpiderTrax, General Grabber AT 265/70/17, Custom Front Receiver / Plow Mount, Custom Tow Rings F/R, Diablo Intune.

  2. #2
    Senior Member Getting Dirty thance's Avatar
    Join Date
    Jul 2012
    Posts
    167
    Rep Power
    10
    Just had the alignment done by a really nice fellow that was talking with me the whole time. He owns his own shop and also has a 2013 Rubicon Unlimited.

    Anyway, I didn't realize that only the Toe was adjustable on the XK and the Caster and Camber are fixed. Does this sound right to everyone?
    2010 5.7 QTII - OME HD w/ 3/8" spacers up front and F150 MLL in rear, JBA UCA 6.7, JKS 2034 Front Quick Disconnects, Gas Tank Skid Mod, PinchWeld Mod, 1.5" SpiderTrax, General Grabber AT 265/70/17, Custom Front Receiver / Plow Mount, Custom Tow Rings F/R, Diablo Intune.

  3. #3
    Lifetime Member Getting Dirty Matt's Avatar
    Join Date
    Feb 2011
    Posts
    7,771
    Rep Power
    19
    No. The camber and caster are adjusted via the lower control arm mounts.

  4. #4
    Senior Member Getting Dirty thance's Avatar
    Join Date
    Jul 2012
    Posts
    167
    Rep Power
    10
    Sounds like I need to take it back tomorrow. Is anything adjustable in the rear?
    2010 5.7 QTII - OME HD w/ 3/8" spacers up front and F150 MLL in rear, JBA UCA 6.7, JKS 2034 Front Quick Disconnects, Gas Tank Skid Mod, PinchWeld Mod, 1.5" SpiderTrax, General Grabber AT 265/70/17, Custom Front Receiver / Plow Mount, Custom Tow Rings F/R, Diablo Intune.

  5. #5
    Lifetime Member Getting Dirty Matt's Avatar
    Join Date
    Feb 2011
    Posts
    7,771
    Rep Power
    19
    Nope, only the front axle. Do you have a printout of your alignment numbers? No need to take it back if they're good.

  6. #6
    Senior Member Getting Dirty thance's Avatar
    Join Date
    Jul 2012
    Posts
    167
    Rep Power
    10
    Caster is out, Camber is in:


    Initial Min Spec Max Spec Final
    Front Caster L 2.7 3.55 4.45 2.58
    R 3.38 3.55 4.45 3.33
    Camber L .05 -.70 .15 .04
    R .09 -.70 .15 -.06
    Toe L .26 .00 .25 .12
    R -.24 .00 .25 .12

    Talked to him this morning and he thought the front of the LCA was adjustable, but the rear was just a pivot, so Camber and Caster would be adjusted together...... sounded like he was worried fixing one would hurt the other.
    2010 5.7 QTII - OME HD w/ 3/8" spacers up front and F150 MLL in rear, JBA UCA 6.7, JKS 2034 Front Quick Disconnects, Gas Tank Skid Mod, PinchWeld Mod, 1.5" SpiderTrax, General Grabber AT 265/70/17, Custom Front Receiver / Plow Mount, Custom Tow Rings F/R, Diablo Intune.

  7. #7
    Lifetime Member Getting Dirty Matt's Avatar
    Join Date
    Feb 2011
    Posts
    7,771
    Rep Power
    19
    Numbers dont look too bad so I wouldn't worry. The rear pivot slides to adjust caster and has a minor effect on camber. The front adjusts camber and has a minor effect on caster.

  8. #8
    Senior Member Getting Dirty thance's Avatar
    Join Date
    Jul 2012
    Posts
    167
    Rep Power
    10
    Went back today for a second try .... I added a column for the new results:


    Initial Min Spec Max Spec Final 1st try Final 2nd try
    Front Caster L 2.7 3.55 4.45 2.58 3.00
    R 3.38 3.55 4.45 3.33 3.13
    Camber L .05 -.70 .15 .04 -.14
    R .09 -.70 .15 -.06 -.01
    Toe L .26 .00 .25 .12 .11
    R -.24 .00 .25 .12 .12

    Numbers are better, seemed there was only so much that could be done with the caster, without dragging the camber out.
    2010 5.7 QTII - OME HD w/ 3/8" spacers up front and F150 MLL in rear, JBA UCA 6.7, JKS 2034 Front Quick Disconnects, Gas Tank Skid Mod, PinchWeld Mod, 1.5" SpiderTrax, General Grabber AT 265/70/17, Custom Front Receiver / Plow Mount, Custom Tow Rings F/R, Diablo Intune.

  9. #9
    Super Moderator Getting Dirty 07JeepXK's Avatar
    Join Date
    Jun 2010
    Location
    East Aurora, NY
    Posts
    3,082
    Rep Power
    15
    Umm is your alignment guy familiar with doing alignments on our XK? Doesn't seen it. You should be able to get that alignment dead on
    2007 4.7 Liter XK | Front Modified OME HD Lift | Rear 4" Superlift | JBA UCA's | Rusty's Rear Adjustable Track Bar | Rysty’s Adjustable Upper and Lower Rear Control Arms w/Heim Joints | Mickey Thompson Classic III 17x9 Wheels | 315/70R17 Goodyear Duratracs | Airflow Snorkel | Flowmaster 40 Series Muffler | Superchips Flashpaq | Mopar Skids | 4xGuard Belly Guard | American Rebel Rear Diff Cover | Rear Powertrax No-Slip | Front Electronic Locker | Rear Heat/AC Delete

  10. #10
    Senior Member Getting Dirty thance's Avatar
    Join Date
    Jul 2012
    Posts
    167
    Rep Power
    10
    Well . .... . No........ this is his first one. He didn't even know the LCA was adjustable on the first attempt. Now he knows, but was moving everything together.

    He has great equipment with a nice laser setup, Does mostly fleet vehicles - ambulances in particular with whatever else comes his way thrown in the mix.

    He was doing it all by himself which probably didn't help, and I wasn't able to help as I was dressed for the office.
    2010 5.7 QTII - OME HD w/ 3/8" spacers up front and F150 MLL in rear, JBA UCA 6.7, JKS 2034 Front Quick Disconnects, Gas Tank Skid Mod, PinchWeld Mod, 1.5" SpiderTrax, General Grabber AT 265/70/17, Custom Front Receiver / Plow Mount, Custom Tow Rings F/R, Diablo Intune.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. RC 2" installed
    By andyb in forum Suspension & Lifts
    Replies: 3
    Last Post: 11-20-2013, 06:18 AM
  2. OME front kit is installed!!!
    By xk2006 in forum Suspension & Lifts
    Replies: 14
    Last Post: 09-21-2012, 07:53 AM
  3. 315 70 17 installed
    By bigmaninds in forum Wheels & Tires
    Replies: 11
    Last Post: 03-03-2012, 11:11 AM
  4. JeepinbyAl Lift installed..
    By ruquik in forum Suspension & Lifts
    Replies: 32
    Last Post: 09-01-2011, 03:38 PM
  5. Matrix- 4xGaurd Installed......
    By IamJEEP in forum Exterior Modification
    Replies: 20
    Last Post: 02-21-2011, 10:28 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •