Fixed length LCAs? - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > JK Jeep Wrangler Forum > JK General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 05-03-2012, 12:08 PM   #1
ESP
Jeeper
 
ESP's Avatar
 
Join Date: Jun 2010
Location: NC
Posts: 11,504
Fixed length LCAs?

Anyone running these? Thoughts?

__________________
98 XJ 02 TJ 10 JK 13 JK

2013 JK - Lifted w/ 35s - Bilstein 5100s - Monster TB - Chopped Flares - Can't Keep It Clean
ESP is offline   Quote Quick Reply
Old 05-03-2012, 12:29 PM   #2
Jeeper
 
JIMBOX's Avatar
 
Join Date: Nov 2009
Posts: 9,914
Your jeep is stock with "Fixed length" LCAs/UCAs--

You shouldn't changem, unless the LIFT KIT mfg provides em/w increased length, which will depend on the amount of lift-

I'd never usem-

Good luck

JIMBO

__________________
"ya gotta have class"
JIMBOX is offline   Quote Quick Reply
Old 05-03-2012, 12:30 PM   #3
MallCrawler

WF Supporting Member
::WF Moderator::
 
kjeeper10's Avatar
 
Join Date: Feb 2011
Location: Connecticut
Posts: 35,965
= no adjustability
kjeeper10 is offline   Quote Quick Reply
Old 05-03-2012, 12:32 PM   #4
ESP
Jeeper
 
ESP's Avatar
 
Join Date: Jun 2010
Location: NC
Posts: 11,504
Quote:
Originally Posted by JIMBOX View Post
Your jeep is stock with "Fixed length" LCAs/UCAs--

You shouldn't changem, unless the LIFT KIT mfg provides em/w increased length, which will depend on the amount of lift-

I'd never usem-

Good luck

JIMBO
True but lifts change stock caster angle. Would not new longer fixed LCAs help handling characteristics with the 2.5 lift? I will not go larger so this is why I was looking into them.
__________________
98 XJ 02 TJ 10 JK 13 JK

2013 JK - Lifted w/ 35s - Bilstein 5100s - Monster TB - Chopped Flares - Can't Keep It Clean
ESP is offline   Quote Quick Reply
Old 05-03-2012, 12:39 PM   #5
MallCrawler

WF Supporting Member
::WF Moderator::
 
kjeeper10's Avatar
 
Join Date: Feb 2011
Location: Connecticut
Posts: 35,965
Everybody's jeep seams to respond different.
What if the new arms set a caster number that doesn't work for you?
kjeeper10 is offline   Quote Quick Reply
Old 05-03-2012, 12:39 PM   #6
Jeeper
 
JIMBOX's Avatar
 
Join Date: Nov 2009
Posts: 9,914
Yes the lift will DECREASE the + front caster --


Quote:
Originally Posted by ESP View Post
True but lifts change stock caster angle. Would not new longer fixed LCAs help handling characteristics with the 2.5 lift? I will not go larger so this is why I was looking into them.
But each jeep is different and if you get "FIXED" length LCAs--they may be wrong, while ADJUSTABLE LCAs, can be adjusted to any relative caster--somewhere around 5/6° positive !!

JIMBO
__________________
"ya gotta have class"
JIMBOX is offline   Quote Quick Reply
Old 05-03-2012, 12:41 PM   #7
MallCrawler

WF Supporting Member
::WF Moderator::
 
kjeeper10's Avatar
 
Join Date: Feb 2011
Location: Connecticut
Posts: 35,965
kjeeper10 is offline   Quote Quick Reply
Old 05-03-2012, 01:07 PM   #8
ESP
Jeeper
 
ESP's Avatar
 
Join Date: Jun 2010
Location: NC
Posts: 11,504
True dat homies. I guess its moot now but are the fixed ones less money than the adj? Which are you running jeeper?
__________________
98 XJ 02 TJ 10 JK 13 JK

2013 JK - Lifted w/ 35s - Bilstein 5100s - Monster TB - Chopped Flares - Can't Keep It Clean
ESP is offline   Quote Quick Reply
Old 05-03-2012, 01:26 PM   #9
MallCrawler

WF Supporting Member
::WF Moderator::
 
kjeeper10's Avatar
 
Join Date: Feb 2011
Location: Connecticut
Posts: 35,965
Quote:
Originally Posted by ESP
True dat homies. I guess its moot now but are the fixed ones less money than the adj? Which are you running jeeper?
Tera's

They are more expensive than most though.
Drivability is improved with them on and caster around 5
kjeeper10 is offline   Quote Quick Reply
Old 05-03-2012, 01:28 PM   #10
Supporting Member Commercial Member

WF Supporting Member
 
Daniel_M's Avatar
 
Join Date: Nov 2011
Location: Arizoner
Posts: 2,406
ESP I got the JKS Jspec fixed arms from Northridge 4x4. They are longer than stock and they do change the geometry of the axle. Having said that, I wish I went with something else. Mainly Rock Krawler adjustables or Rusty's. The arms I got are fat, beefy, heavy and longer but they are not high clearance and they are pretty much a longer stock replacement but made from round tubing rather than square. IMO even the fixed length Synergy control arms look better than the ones I got cause they are high clearance.

I say go adjustables and don't look back.

YMMV. Just my experienced opinion.

-Dan
__________________
-Dan, Owner
RockRaider4x4 - PM me for a quote
Free shipping on most items
Suspension package deals available
Daniel_M is offline   Quote Quick Reply
Old 05-03-2012, 01:45 PM   #11
ESP
Jeeper
 
ESP's Avatar
 
Join Date: Jun 2010
Location: NC
Posts: 11,504
How about the Teraflex vs JKS ones? Either better or just a difference of price? I've got the JKS adj track bars and like them.
__________________
98 XJ 02 TJ 10 JK 13 JK

2013 JK - Lifted w/ 35s - Bilstein 5100s - Monster TB - Chopped Flares - Can't Keep It Clean
ESP is offline   Quote Quick Reply
Old 05-03-2012, 01:48 PM   #12
Supporting Member Commercial Member

WF Supporting Member
 
Daniel_M's Avatar
 
Join Date: Nov 2011
Location: Arizoner
Posts: 2,406
Both are great I am sure just on the expensive end as far as control arms go. When I change mine I am going with either Rusty's, Clayton or Rock Krawler as they all perform great.

Edit: Also check out Metalcloak's control arms

http://www.metalcloak.com/Metalcloak...Kits-s/231.htm

-Dan
__________________
-Dan, Owner
RockRaider4x4 - PM me for a quote
Free shipping on most items
Suspension package deals available
Daniel_M is offline   Quote Quick Reply
Old 05-03-2012, 01:50 PM   #13
MallCrawler

WF Supporting Member
::WF Moderator::
 
kjeeper10's Avatar
 
Join Date: Feb 2011
Location: Connecticut
Posts: 35,965
Teraflex... Pretty beefy
Attached Thumbnails
Click image for larger version

Name:	image-172992547.jpg
Views:	38
Size:	146.4 KB
ID:	119382  
kjeeper10 is offline   Quote Quick Reply
Old 05-03-2012, 01:54 PM   #14
ESP
Jeeper
 
ESP's Avatar
 
Join Date: Jun 2010
Location: NC
Posts: 11,504
The Rock Krawler front adjs are $279 and look pretty good. So if I got those and swamped them out from the stockers, what else do I need to do? I'd rather do the work my self and then take it to a place to get the numbers. Would that be safe? I guess I mean if I take off the stock arms and adj the new ones to the same length then drive it over to get a proper read on them, could I just adjust them to get a better caster angle at that point?
__________________
98 XJ 02 TJ 10 JK 13 JK

2013 JK - Lifted w/ 35s - Bilstein 5100s - Monster TB - Chopped Flares - Can't Keep It Clean
ESP is offline   Quote Quick Reply
Old 05-03-2012, 02:54 PM   #15
MallCrawler

WF Supporting Member
::WF Moderator::
 
kjeeper10's Avatar
 
Join Date: Feb 2011
Location: Connecticut
Posts: 35,965
23" from eye to eye is the general consensus here.

I forget how much over stock that is, but works for most.

I set, drove around a bit and turned the adjustment out one more turn. I think I am at 23 1/8 maybe a little more.

Last alignment check I hit 5 degrees caster
kjeeper10 is offline   Quote Quick Reply
Old 05-03-2012, 03:45 PM   #16
Jeeper
 
IndyJeepMan's Avatar
 
Join Date: Dec 2009
Location: Indianapolis
Posts: 3,387
Go check out Rokmen, people dont realize they make a full set of adjustable CA's with dual JJ's for the JK. Same price as the teraflex I believe.
__________________
1980 CJ7
3.9L Cummins POWER!
Follow my build, its cool and stuff: http://www.wranglerforum.com/f118/project-shake-n-bake-a-cummins-cj-188515.html]
IndyJeepMan is offline   Quote Quick Reply
Old 05-03-2012, 04:48 PM   #17
Supporting Member Commercial Member

WF Supporting Member
 
Daniel_M's Avatar
 
Join Date: Nov 2011
Location: Arizoner
Posts: 2,406
ESP you don't need to take it anywhere to get numbers. Just install one at a time on flat level ground and then go for a test drive. You can start out with the 23" eye to eye that Ken is talking about.

Are you getting an vibrations or anything to warrant your needing control arms?

-Dan
__________________
-Dan, Owner
RockRaider4x4 - PM me for a quote
Free shipping on most items
Suspension package deals available
Daniel_M is offline   Quote Quick Reply
Old 05-03-2012, 06:39 PM   #18
ESP
Jeeper
 
ESP's Avatar
 
Join Date: Jun 2010
Location: NC
Posts: 11,504
Quote:
Originally Posted by Daniel_M View Post
ESP you don't need to take it anywhere to get numbers. Just install one at a time on flat level ground and then go for a test drive. You can start out with the 23" eye to eye that Ken is talking about.

Are you getting an vibrations or anything to warrant your needing control arms?

-Dan
I get a little vibration around speeds of about 50 mph and when going around bends in the interstate while doing this speed. They do not happen at any other time. Will adj lcas correct this? Is this the most likely candidate to the problem? FWIW the tires are perfectly balanced.
__________________
98 XJ 02 TJ 10 JK 13 JK

2013 JK - Lifted w/ 35s - Bilstein 5100s - Monster TB - Chopped Flares - Can't Keep It Clean
ESP is offline   Quote Quick Reply
Old 05-03-2012, 07:55 PM   #19
Because I Can

WF Supporting Member
 
TommyT's Avatar
 
Join Date: Jul 2011
Location: Buchanan Mi
Posts: 248
__________________
Proud USAF dad! 2011 Cosmos Blue Sport
"The best we can hope for concerning the people is that they be properly armed" ALEXANDER HAMILTON
TommyT is offline   Quote Quick Reply
Old 05-04-2012, 06:07 PM   #20
ESP
Jeeper
 
ESP's Avatar
 
Join Date: Jun 2010
Location: NC
Posts: 11,504
Quote:
Originally Posted by TommyT View Post
I've heard about these but I don't want to limit ground clearance. I also think that you would run into the same problem with these as you would with fixed LCAs. If they don't improve the angle all the way or correctly then your stuck with no adjustability.

The guys from Krawl emailed me today with some info on their adj arms.
__________________
98 XJ 02 TJ 10 JK 13 JK

2013 JK - Lifted w/ 35s - Bilstein 5100s - Monster TB - Chopped Flares - Can't Keep It Clean
ESP is offline   Quote Quick Reply
Old 05-04-2012, 07:45 PM   #21
MallCrawler

WF Supporting Member
::WF Moderator::
 
kjeeper10's Avatar
 
Join Date: Feb 2011
Location: Connecticut
Posts: 35,965
Quote:
Originally Posted by ESP

I've heard about these but I don't want to limit ground clearance. I also think that you would run into the same problem with these as you would with fixed LCAs. If they don't improve the angle all the way or correctly then your stuck with no adjustability.

The guys from Krawl emailed me today with some info on their adj arms.
Exactly ..... My friend runs them and loves them, but I still would pass for adj CA's
kjeeper10 is offline   Quote Quick Reply
Old 05-04-2012, 11:11 PM   #22
Jeeper
 
Djstorm100's Avatar
 
Join Date: Apr 2011
Location: Raleigh NC
Posts: 757
Quote:
Originally Posted by ESP View Post
True but lifts change stock caster angle. Would not new longer fixed LCAs help handling characteristics with the 2.5 lift? I will not go larger so this is why I was looking into them.

Very bad idea.

what may work on my jeep may not work on yours. If getting control arms do it right the first time Johnny joint control arm that is adjustable. Buy once and cry once
Djstorm100 is offline   Quote Quick Reply
Old 05-04-2012, 11:20 PM   #23
Jeeper
 
Djstorm100's Avatar
 
Join Date: Apr 2011
Location: Raleigh NC
Posts: 757
Quote:
Originally Posted by ESP View Post
The Rock Krawler front adjs are $279 and look pretty good. So if I got those and swamped them out from the stockers, what else do I need to do? I'd rather do the work my self and then take it to a place to get the numbers. Would that be safe? I guess I mean if I take off the stock arms and adj the new ones to the same length then drive it over to get a proper read on them, could I just adjust them to get a better caster angle at that point?
I highly suggest something with johnny joint. Currie (john currie, hes the one that made the johnny joints) or teraflex (uses johnny joints) I runny Johnny joints.

You might as well pick up a rear uppers as well because your rear driveshaft pinion angle with a 2dr is more sever

There is a much easier way of doing it, you'll have to see the way I do it. Kinda hard to explain unless you've messed with pinion angles before.

Quote:
Originally Posted by ESP View Post
I get a little vibration around speeds of about 50 mph and when going around bends in the interstate while doing this speed. They do not happen at any other time. Will adj lcas correct this? Is this the most likely candidate to the problem? FWIW the tires are perfectly balanced.
Does the vibration go away as your increase speed? does the whole jeep shake? It's probably drive shaft vibration.

Quote:
Originally Posted by TommyT View Post
There is always the right way, ok way, wrong way to do things. This happens to be board line wrong way.
Djstorm100 is offline   Quote Quick Reply
Old 05-05-2012, 03:36 AM   #24
MallCrawler

WF Supporting Member
::WF Moderator::
 
kjeeper10's Avatar
 
Join Date: Feb 2011
Location: Connecticut
Posts: 35,965
Quote:
Originally Posted by Djstorm100

I highly suggest something with johnny joint. Currie (john currie, hes the one that made the johnny joints) or teraflex (uses johnny joints) I runny Johnny joints.

You might as well pick up a rear uppers as well because your rear driveshaft pinion angle with a 2dr is more sever

There is a much easier way of doing it, you'll have to see the way I do it. Kinda hard to explain unless you've messed with pinion angles before.

Does the vibration go away as your increase speed? does the whole jeep shake? It's probably drive shaft vibration.

There is always the right way, ok way, wrong way to do things. This happens to be board line wrong way.
That is the first time I heard of rear uppers for a 2 door??

ESP mentioned "bends" I noticed this when I still had the 32's mounted.

I have a vibe at 60 but lessens with higher speed. I chalked it up as the tires that can't be perfectly balanced.
kjeeper10 is offline   Quote Quick Reply
Old 05-05-2012, 03:58 AM   #25
MallCrawler

WF Supporting Member
::WF Moderator::
 
kjeeper10's Avatar
 
Join Date: Feb 2011
Location: Connecticut
Posts: 35,965
Just did some googling on rear pinion angle.
A 4 door is more forgiving, had it backwards.
Huh..... I should look into this more
kjeeper10 is offline   Quote Quick Reply
Old 05-05-2012, 08:41 AM   #26
Jeeper
 
chris.george's Avatar
 
Join Date: Jan 2012
Location: Mountain View, CA
Posts: 774
I had new fixed length ones on my lift. If you followed the drama and problems I had with mine..... bad idea in my opinion.
__________________
First, gather your facts; then, distort them at your leisure.
— Mark Twain
chris.george is offline   Quote Quick Reply
Old 05-05-2012, 08:42 AM   #27
Jeeper
 
chris.george's Avatar
 
Join Date: Jan 2012
Location: Mountain View, CA
Posts: 774
Quote:
Originally Posted by kjeeper10 View Post
Just did some googling on rear pinion angle.
A 4 door is more forgiving, had it backwards.
Huh..... I should look into this more
Yup, 4-Door you generally don't have to worry about pinion. 2-Doors on the other hand, after 3" (I've done a lot of research ha!) you might need to watch it.
__________________
First, gather your facts; then, distort them at your leisure.
— Mark Twain
chris.george is offline   Quote Quick Reply
Old 05-05-2012, 08:49 AM   #28
Jeeper
 
JIMBOX's Avatar
 
Join Date: Nov 2009
Posts: 9,914
Don't forget--with a 2dr/4dr, any time you lift above 1", you'll alter the alignment settings and when you install either longer fixed LCAs/adj LCAs--you change the + caster/+camber and pinion angle, besides reducing the toe-in (a little)-

A lift isn't just a simple bolt-on, drive away mod-

Smokemifyougotem-

JIMBO
__________________
"ya gotta have class"
JIMBOX is offline   Quote Quick Reply
Old 05-05-2012, 12:13 PM   #29
Member
 
Join Date: Jul 2011
Location: Someplace in Africa
Posts: 3,287
On a two door, 07-11, when you have more then 3+" on your JK you will more than likely replace the rear shaft first and need the rear.upper control arms to correct pinion angle.
pluke the 2 is offline   Quote Quick Reply
Old 05-05-2012, 01:02 PM   #30
MallCrawler

WF Supporting Member
::WF Moderator::
 
kjeeper10's Avatar
 
Join Date: Feb 2011
Location: Connecticut
Posts: 35,965
Quote:
Originally Posted by chris.george

Yup, 4-Door you generally don't have to worry about pinion. 2-Doors on the other hand, after 3" (I've done a lot of research ha!) you might need to watch it.
Interesting. Don't think I am over 3" but it does seem a little steep.

How would someone know the difference between driveline vibes and tire vibes?

kjeeper10 is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




Download our Mobile App

» Featured Product

All times are GMT -5. The time now is 01:39 PM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC