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Unread 06-18-2011, 01:09 PM   #1
98jeepzj
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ZJ control arm lengths help

I am about to buy some front uppers and lowers for my zj and can't find a thread that says what the start the length at. Ill be at around 4.25" of lift. If anyone has any insight on where to start I would be more then happy

Thanks
ZJ

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Unread 06-18-2011, 01:13 PM   #2
5.9 ANDY
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before you buy some... i have my old ones i am selling, if you are interested... PM me.

wich ones are you looking at getting?
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Quote:
Originally Posted by shift_grind View Post
It's threads like this that make me wonder why people lift there jeeps
its comments like this that make me wonder why some people are jerks.

build thread:http://www.jeepforum.com/forum/f197/...ndard-1056365/
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Unread 06-18-2011, 01:32 PM   #3
blackjack12982
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Andy, you don't happen to have a set of rear uppers, do you?
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Unread 06-18-2011, 02:03 PM   #4
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i got all 8.
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Quote:
Originally Posted by shift_grind View Post
It's threads like this that make me wonder why people lift there jeeps
its comments like this that make me wonder why some people are jerks.

build thread:http://www.jeepforum.com/forum/f197/...ndard-1056365/
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Unread 06-18-2011, 03:06 PM   #5
98jeepzj
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I already have a used set of rear uppers and lowers and I have a brand new set of uppers and lowers for the front comming as soon as I get the money. Thanks though andy.

The rears are rusty's and the fronts are ironman's
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Unread 06-18-2011, 03:22 PM   #6
blackjack12982
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When I installed my lift, I measured the stock arms and added 0.5" IIRC. I've heard 16.25" for lowers talked about, but really the lengths for the LCA's depend on how far you're going to push the axle forward to fit your tires.

I just took a quick measurement of an old set of RC LCA's I have laying around, and they're measuring 16" from center bushing to bushing.
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Unread 06-18-2011, 04:26 PM   #7
98jeepzj
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Thanks blackjack.

One more question, I have heard of people tilting the axle up so the d/s is actually pointing towars the tcase. Should I do this? My front d/s is a cv and my rear is a u joint.
Thanks
ZJ
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Unread 06-18-2011, 04:29 PM   #8
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Quote:
Originally Posted by 98jeepzj View Post
Thanks blackjack.

One more question, I have heard of people tilting the axle up so the d/s is actually pointing towars the tcase. Should I do this? My front d/s is a cv and my rear is a u joint.
Thanks
ZJ
More importantly if you value 4WD, you're gonna get a new DS. That DS is not going to last long. You're going to need balance pinion angle and caster. It's not that simple as just pointing the pinion at the TC. That will lead to caster angles being off.
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Unread 06-18-2011, 04:55 PM   #9
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Wich d/s the front or rear or both? Where should I get it or them?

I plan on getting an alignment after the install aswell so they should be able to adjust that stuff to close to specs.

Thanks ZJ
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Unread 06-18-2011, 04:59 PM   #10
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Quote:
Originally Posted by 98jeepzj View Post
Wich d/s the front or rear or both? Where should I get it or them?

I plan on getting an alignment after the install aswell so they should be able to adjust that stuff to close to specs.

Thanks ZJ
Just a heads up, I talked to Firestone about doing my alignment when they were mounting my 35's, and they said they won't touch caster adjustments on the ZJ's. I don't know if that's all over, or just the local Firestone.
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Unread 06-18-2011, 05:57 PM   #11
98jeepzj
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Thanks for the heads up.

Where would I get a new d/s at?
ZJ
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Unread 06-18-2011, 06:04 PM   #12
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Quote:
Originally Posted by 98jeepzj View Post
Thanks for the heads up.

Where would I get a new d/s at?
ZJ
A JY or a DS shop...
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Unread 06-18-2011, 06:05 PM   #13
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Quote:
Originally Posted by blackjack12982 View Post
Just a heads up, I talked to Firestone about doing my alignment when they were mounting my 35's, and they said they won't touch caster adjustments on the ZJ's. I don't know if that's all over, or just the local Firestone.
No regular tire shop will do it because they have to remove one end of the control arms to do the adjustments. Some specialty alignment shops will do it but they charge a lot more.
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Unread 06-18-2011, 06:24 PM   #14
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Yeah no I'm not worried about that. My dad does buisness with the alignment shop. He let's them use his inspection machine for the alignment machine. So I'm pretty sure hell do it for me.

So basicly for the length figure out how far I want to push my axles forward and back. Then get an alignment and a new front d/s.

I think for the fronts I'm gonna go a half inch longer to start because their pretty centerd and maybe an inch to an inch and a half longer in stock for the rear.

Thanks guys,
Zj
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