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Unread 01-17-2010, 10:44 PM   #1
bull1kevin
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1984 CJ7 
 
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Location: Beach City, TX.
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4" lift installed, now drives like crap!!!

Hi guys I installed a rough country 4" lift and added heavyer duty shackles also updated the sway bar bushings to urathane. While driving it wants to sway form side to side kinda scary but not as scary as when you lift off the gass it's like the backend is on a weble woble... should note that I'm using 33x1o.5 tsl radial swampers. I'm thinking maybe an aftermarket rear sway bar might help.

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Unread 01-18-2010, 12:10 AM   #2
scottymac62
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I bet your caster angle is all out of whack.

Check this thread out.......http://www.jeepforum.com/forum/f8/wh...-loose-445430/
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Unread 01-18-2010, 12:10 AM   #3
carguy68ssrs
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squirrely?

How's the caster angle?
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Unread 01-18-2010, 01:33 AM   #4
80cj
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How much longer than stock are your heavy duty shackles?
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Unread 01-18-2010, 06:31 AM   #5
hotrod351
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id check the caster angle. i have a 1955 M38A1 and have done everything to it, lifted 2", then lifted 4", installed power steering, and in all the mods. i did it always handled great.
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Unread 01-18-2010, 07:08 AM   #6
deadeye
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Did you use a drop pitman arm? I'm also wondering if you extended the sway bar connects so it works correctly.

How about taking some pics so we can have a look.
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Unread 01-18-2010, 07:35 AM   #7
hotrod351
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ill try to take some pics. today, but no i didnt use a drop pitman arm. when i installed the 4" lift my stock front tie rod setup it was at a hell of a angle upwards, but i never had any problems, off road or on the highway. what i did was file the alignment tooth on the pitman arm, i just filed down the center of it, then i could position it where ever i wanted to. and it ended up angled a bit towards the passengers side so i could connect the stock tie rod setup to it. i have a lot less angle upwards with the power steering setup than i did without it on the tie rods. but still, like i said, even with the steep upward angle i did have, it always handled great. i had though by moving the pitman arm off to the side it might create a problem but no. i also used the steering column out of the camero, ing. turn signals. i have to say that of all the things i did to my jeep, lift, lockers, onboard air and on and on, the power steering was the best.
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Unread 01-18-2010, 09:17 AM   #8
keith460
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Well you didn't need to grind or file the pitman arm as you did and I don't think anyone would even recommend doing that. You could have simply adjusted the length of the drag link by turning the threaded coupler out until it was aligned straight with your steering wheel; that's what it's there for.

To the OP, check your caster angle as suggested as the shackles have probably thrown it more to the negative angle than the required +3-6 positive angle.
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Unread 01-18-2010, 07:08 PM   #9
bull1kevin
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I did use a dropped pitman arm and also extended sway bar links came with the kit. the shackles are 3/8" in front and 1 3/8" in rear.cause i hate a lift that sags in the back...I do not have a way of checking the angle on it so i guess that is where i should begin. it just seems kinda scary to drive right now.
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Unread 01-18-2010, 08:38 PM   #10
80cj
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bull1kevin,
You don't say what vehicle you have nor is that info in your profile. I'm guessing 76 or later CJ-5 or CJ-7?
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Unread 01-18-2010, 08:41 PM   #11
bull1kevin
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I'm sorry not much of a computer guy but it's an 84 cj7
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Unread 01-18-2010, 08:47 PM   #12
80cj
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Quote:
Originally Posted by bull1kevin View Post
I'm sorry not much of a computer guy but it's an 84 cj7
Can you post some pics so we can have a look and see if there is anything that doesn't look right?
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Unread 01-18-2010, 09:05 PM   #13
bull1kevin
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Sure I'll snap some tomorrow (since i'm at work untill 5 a.m.)
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Unread 01-19-2010, 05:24 PM   #14
bull1kevin
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today

Here's what i learned today, went to the alignment shop and caster was 3.5 which they said was ok but the toe in was out so they corrected it. on the drive home it was better but still not great. then I had my dad come look at it with me what we then discovered was the shackles from Rough Country were to wide (the center bushing ) not allowing the spring end and the frame end to compress fully against the shackle so i pulled them apart trimmed approx. 1/4" off each center bushing and now they fit snug so the test drive after was even better. I think the remaining issue is i need a wider tire. thanks to all for your input.!!!
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