|
embro 10-12-2002, 06:31 AM my CJ have a TJ frame, 35" tires, 4.5 lift, and at about 80km/h the jeep may start shacking so violent i got to stop... take a big breath and hopes it dosnt do this again, but hopes dont do shit... i have no sway bar for the moment, because i smashed it on a rock, i will fix it and reinstall it but what do you guys think? Kensoffroad 10-12-2002, 07:14 AM I hate it when this happens but I will spare you the newbie burn because you should have been around long enough to know this but do a search:flipoff2: I searched jeep tech for the last year with the words death wobble and got back 30 threads.I remember there was a few extensive threads on this a while back it might have been a lil longer then a year though. Trailhawg Ramsey Offroad 10-12-2002, 01:53 PM Dude...it ain't your sway bar. tire pressure & a steering stabilizer will probably fix your problem. jeepmauler 10-12-2002, 02:36 PM And balance 'em Mace 10-12-2002, 08:04 PM I have a 2000 TJ with, I have had it aligned, new shocks, new trac arm, that stuff did nothing, the only thing that helped was a new steering stabilizer, now it only does it once ever two or three weeks not ever day. I was think of replacing the tie rod with a stiffer one, It has been in a wreck, but the frame has been staightend, I also thought if one new stabiler shock helped so much maybe duals would be even better , untill I can figure it out I just carry a extra pair of boxers under the front seat. Jerry Bransford 10-12-2002, 08:13 PM Originally posted by Ramsey Offroad Dude...it ain't your sway bar. tire pressure & a steering stabilizer will probably fix your problem. Installing a new steering stabilizer to fix Death Wobble is like putting a band-aid on a broken-arm. It's strictly a band-aid fix since it doesn't cure the underlying problem actually causing the Death Wobble. If everything is within spec, a steering stabilizer isn't even needed. Taking off a steering stabilizer when something is out of spec will cause Death Wobble, but that doesn't mean a new stabilizer is the cure... it only masks the symptom. Death Wobble can, unfortunately, have many sources... and it's often a combination of things that produces it. Insufficient caster angle, like under 5 degrees, is a guaranteed invitation to Death Wobble to come to the party. Unbalanced tires coupled with insufficient caster angle, bad ball joints, loose trackbar, etc. can also cause it. Check and adjust your front-end alignment, specifically toe-in angle and caster angle since camber is not adjustable on a TJ. Anything around 5.5 degrees or greater caster angle is fine, make sure the toe-in is within spec. Just installing a suspension lift reduces caster angle, plus it screws up the toe-in. Mace 10-12-2002, 08:23 PM I have had mine aligned twice, the guy told me that he set it to factory specs which required it to be toed in quit a bit if I rember right ? Mace 10-12-2002, 08:26 PM What sould you set the caster and toe at, is more the better on caster, what happens with to much caster? Jerry Bransford 10-12-2002, 08:46 PM Too much caster angle will cause front driveshaft vibrations because it steepens the angle between the front pinion shaft and front driveshaft too much. So the taller the lift, more the caster angle should be reduced to avoid that problem. Anything 5-5.5 or greater degrees is fine. 7 degrees is the optimal angle for an unlifted Jeep, but trying for 7 degrees with a tall lift is asking for front driveshaft vibration. If you have a lift, I'd go nothing higher than 6 degrees. Toe-in isn't much. You can set the front tire edges so they're around 1/8" closer together than the rear tire edges are. Check out http://www.cowtownjeeps.com/tech/align.htm for an easy method to setting your own caster angle accurately with nothing more than a single wrench and a tape measure. | |