wayoflife

you just need to lengthen them a little bit... maybe a 1/4" longer than stock should do the trick. if not, you can always add a bit more with ease.

yo_marc

I'd also check your toe setting. A LOT of flightiness can be introduced with a funky toe setting. I only added a 1.75" bb to my JK and the thing got nervous. I played with the toe a lot and found the best setting to be zero'd out. Now it's not flighty at all and tracks dead straight over rough stuff.

Personally, I think that the less caster you run, the less toe you need to run. If you fix the caster, going back to a 1/8" toe-in would probably be good.

Mr. Bean

Not sure if this will help, but AEV has a geometry correcting front control arm drop brackets for lifts above 2.5 and below 4". They can be used on non-AEV lifts, as in my case, and really helps bring it back to a stock feel. Plus, it's much cheaper than LCA. $99.

Bonedoc

That is a good question. You couls start by calling your lift kit manufacturer and just asking if they have a starting point for you. My 4.5" kit did, that allowed us to install it and be close, then dial it when it was on the alignment rack. Or you can either put it on a rack or with an angle reader on the axle adjust your arms until the castor is where you want it.
There is a write up on the forum here that I'm sure if you search it it will come up.
Adjusting your control arms up front is a balance between pinin angle and + castor. The more + the castor the more positive the steering feel but as you increase castor you increase your pinion angle. So essentially you are tryingto get as much castor as possible for positive handling but not too much as to start having driveline vibration. This should be a really easy balance to achieve with a 2.5" kit.
Hopefully some other members will chime in and add anythingI might of left out. Good luck with it.

x2 in what WOL said. If anyone would know it is him so I'd start there.

wayoflife

not trying to offed anyone here but, your information is really bad. unlike the old TJ, the steering design of the JK will NOT change your toe-in setting with the installation of a lift. proper toe-in should measure only about 1/16" of an inch and to someone new to working on jeeps, this can easily be mistaken for zero. granted, if you have a bent tie-rod due to a hit from a rock, that would change your toe-in but it would do so by giving you TOO MUCH.

when talking about caster, the change in degree is too small to require any change to your toe setting.

the brackets you speak of will help but, as you mentioned, on a jeep that is sitting more at 3"-4" and NOT 2.5". the OP has only 2.5" of lift and really, i have a hard time recommending that someone purposefully LOWER a rock target like your control arm mounts after you just spent good money trying to lift it up. but hey, that's just me.

JeepJeremy

I just put on a 2.5 inch teraflex lift and have the same "flightyness" when driving over 35 mph. After reviewing ALOT of the threads
on this forum, the adjustable front lower control arms seem to be the way to go, now that i've got my front axle centered with an
adjustable front trackbar (JKS). Mine should be here in a day or so. Listen to wayoflife, he knows his stuff.

TeraFlex

JK Wrangler Front Lower FlexArms | TeraFlex Suspensions



TeraFlex has adjustable control arms for your JK also. You can install these at home.

yo_marc

No offense taken, I know we all got different opinions.

I spent a 'ton' of time adjusting the toe on my primarily road driven stock-ish JK. I'm just a general motorhead and super picky about on road feel and handling. Passing along what worked for me, after a lot of trial and error.

yo_marc

That sounds done correctly. That .03 is pretty much what I'd hope to aim for on an alignment machine.

jstrong394

alright.thimk im gonna try the tf lca's since thats the brand lift im running.....what about the track bar...with a 2.5" lift is that necessary