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Unread 02-06-2014, 05:31 PM   #1
Vic99TJ
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Alignment, Jeep, and The Machine

Hello fellow jeepers!

My stats so far: 03 Rubi 3.25 suspension lift, Metalcloak Front and Rear Trac Bars, 1.25 BL, 1 MML.Stock everything else.

I have come to the conclusion that my steering is bent. (Or just an excuse to upgrade lol) I'm goin with the ZJ stuff. It's what fits my budget.
I work for a shop and we have an alignment rack/machine.
So my question is do I go with stock numbers? I know I can only adjust toe so stock toe? Or better yet what degree of toe? And also can I use the machine to make sure the axles are centered? More like thrust angle? Thanks

Sent from my 03 Rubi!!!

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Unread 02-06-2014, 09:30 PM   #2
mukluk
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When I installed the ZJ tie rod on my LJ I just set the toe to 1/8" toe in, seems to be working just fine for the past 15k miles.
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Unread 02-06-2014, 09:35 PM   #3
Tuffjeeper
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When I asked the same question to a representative at Teraflex, he told me that 7* of caster for a stock Jeep is great, he recommended that the caster be changed to around 5* when the alignment is done on lifted vehicles. I had horrible death wobble when the caster was around 8*, changed it to 5* and its been great ever since. As a matter of fact I drove around without a steering stabilizer for quite some time because it drove so well. I'd recommend going with the 5* caster or close to it if you're doing an alignment anyways.
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Unread 02-07-2014, 10:32 AM   #4
Vic99TJ
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Ok thanks. But I don't think I can change caster on stock arms. And what is the * for 1/8 of an inch?

Sent from my 03 Rubi!!!
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Unread 02-07-2014, 10:41 AM   #5
pierps
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Quote:
Originally Posted by Vic99TJ View Post
And what is the * for 1/8 of an inch?
I think he's using that as his "degrees" symbol.
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Unread 02-07-2014, 10:41 AM   #6
mudb8
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Quote:
Originally Posted by Vic99TJ View Post
Ok thanks. But I don't think I can change caster on stock arms. And what is the * for 1/8 of an inch?

Sent from my 03 Rubi!!!
Use cams in the front lowers.
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Unread 02-07-2014, 04:48 PM   #7
Vic99TJ
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Quote:
Originally Posted by pierps View Post
I think he's using that as his "degrees" symbol.
Yes I thought it was the proper symbol. And oh ya got to get cam bolts.
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Unread 02-07-2014, 08:51 PM   #8
Vic99TJ
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I've been doin research and came up with another question. What should pinion angle be?

Sent from my 03 Rubi!!!
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Unread 02-07-2014, 09:07 PM   #9
apaTJ
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The pinion angle is set with the caster. I would be most concerned with pinion angle, for the front it should be pointed directly at the output of the tcase.
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Unread 02-08-2014, 04:12 AM   #10
Jonny Jeep
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Stock alignment data from FSM. 1/8" toe in would be 0.13 for 215/75 15 tyres.
tj-stock-alignment.gif

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Unread 02-08-2014, 01:17 PM   #11
JStMarie
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Just a tidbit, use the keyboard stroke <alt> then number pad 2, 4, 8 for the degree () symbol. So, while holding the <alt> key down type (on the number pad) 2 then 4 then 8 then release the <alt> key.

There are a bunch of built in symbols (typical IBM keyboard strokes). I find them useful from time to time.

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Unread 02-08-2014, 02:10 PM   #12
Gary2
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Quote:
Originally Posted by apaTJ View Post
The pinion angle is set with the caster. I would be most concerned with pinion angle, for the front it should be pointed directly at the output of the tcase.
I think you may be OK with that statement for the rear driveshaft but not the front . Use the search tool and you will see we have gone over this many times in the past . http://www.jeepforum.com/forum/f9/en...g-read-663777/
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