bkdrocks Posted February 7, 2010 Share Posted February 7, 2010 I had it after I did my lift....I had old tires on it that were worn out and most likely out of balance. New tires,a full set of ball joints(Adjustable uppers) and a good alignment and its gone. Tires made a huge difference,so in my case I would say tire balance mostly,I can't say how bad the ball joints were but I could see how bad the tires leaned in at the top and there was no way to adjust the camber(caster I get confused).But it drives smooth now well worth the money for piece of mind... I think the ball joint set cost me around $200, adjustable uppers and standard lowers.. Link to comment Share on other sites More sharing options...
mvusse Posted February 7, 2010 Share Posted February 7, 2010 With the inverted Y steering setup out Jeeps have, lift crates toe-in. Depending on what source, toe in should either be 0, or 1/16 to 1/8". I never thought about it and never worried about it. I added 1.75" spacer blocks, and all was fine. Then when I added 4.5" springs to the spacer blocks I had DW at speeds as low as 25mph. Severe enough to fry my alternator bearings. When I took my tape measure out I found I had a full 2 (TWO!) inches of toe in. But because the nose of the Comanche gets narrower toward the front it was not obvious to the naked eye. Set my toe to 0 and all was well again. Link to comment Share on other sites More sharing options...
Eagle Posted February 7, 2010 Share Posted February 7, 2010 Lift also results in less caster. Positive caster is when a line drawn through the lower and upper ball joints leans back toward the top, negative caster is when that line leans forward at the top. The stock configuration results in around 7 degrees of positive caster (upper ball joint is behind lower ball joint, line leans back at the top). If the caster gets less than 4 or 5 degrees, there is less tendency for the weight of the vehicle on the tires to keep the wheels tracking straight, and to self-cancel wheel shimmy. If wheel shimmy is not cancelled out and can be transmitted from one wheel to the other, you get death wobble. This is why lifts require longer control arms, and why adjustable control arms are better if you want to be able to fine tune your alignment. The Catch-22 is that when you have a big lift, cranking the caster back to 7 degrees or more results in the u-joint angle at the front pinion becoming excessive, which causes rapid wear of the u-joint as well as vibrations. So it becomes a bit of a dance -- you have to try to find the compromise between caster angle and u-joint angle that prevents death wobble while not eating u-joints for breakfast, lunch, AND dinner. Link to comment Share on other sites More sharing options...
MjAllTheWay Posted February 13, 2010 Author Share Posted February 13, 2010 Ok now I'm confused about thise i made the DM go away by changing the track bar location good for like a week but now its back.NOW WHAT :headpop: Link to comment Share on other sites More sharing options...
mvusse Posted February 13, 2010 Share Posted February 13, 2010 I don't follow. How did you change the track bar location? Link to comment Share on other sites More sharing options...
Eagle Posted February 13, 2010 Share Posted February 13, 2010 Ok now I'm confused about thise i made the DM go away by changing the track bar location good for like a week but now its back.NOW WHAT :headpop: What is the caster angle? What is the toe-in? Link to comment Share on other sites More sharing options...
MjAllTheWay Posted February 13, 2010 Author Share Posted February 13, 2010 at the bottom of the track bar ware the bolt is i moved it like an 1/4 of an inch Link to comment Share on other sites More sharing options...
MjAllTheWay Posted February 13, 2010 Author Share Posted February 13, 2010 well i did have what the caster was but i lost it well oma try and find but i think ajudtable LCA will do the trick Link to comment Share on other sites More sharing options...
Eagle Posted February 13, 2010 Share Posted February 13, 2010 at the bottom of the track bar ware the bolt is i moved it like an 1/4 of an inch You mean you drilled a new hole? All that does is move the axle slightly toward the passenger side. It doesn't change the alignment. Link to comment Share on other sites More sharing options...
MjAllTheWay Posted February 13, 2010 Author Share Posted February 13, 2010 I know but it dose change the way it drives pluse i jest scored som ajustable LCAs guna put on tomaro Link to comment Share on other sites More sharing options...
mvusse Posted February 13, 2010 Share Posted February 13, 2010 Moving the track bar left or right moves your axle sideways, but won't fix DW unless the original hole was wallowed out. My money is still on the upper end of the track bar, Either the mount being loose or hole wallowed out, or loose bolts holding the bracket to the frame. But i can't remember if you rotated your tires front to rear yet to rule out a tire problem? Also I have driven my truck with anywhere from -0.5 to +7.5 degrees caster without DW. -0.5 gave me a much better drive shaft angle, but was extremely squirrelly on the freeway. I currently sit at around 4 degrees to get some road manners back. Link to comment Share on other sites More sharing options...
MjAllTheWay Posted February 14, 2010 Author Share Posted February 14, 2010 Death Wobble Is gone i changed my LCAs and its gone and feels like it will never come back. :cheers: Link to comment Share on other sites More sharing options...
mvusse Posted February 14, 2010 Share Posted February 14, 2010 Hit a few good pot holes at 70mph to be sure ;) If new lcas fixed it, I'm guessing the bushings were shot on the old stock ones. Good job on fixing it. :thumbsup: Link to comment Share on other sites More sharing options...
MjAllTheWay Posted February 19, 2010 Author Share Posted February 19, 2010 Every thing is perfect but the steering wheel is off to one side now whats up with that. Link to comment Share on other sites More sharing options...
Pete M Posted February 19, 2010 Share Posted February 19, 2010 how's your alignment? Link to comment Share on other sites More sharing options...
mvusse Posted February 19, 2010 Share Posted February 19, 2010 Steering wheel is adjusted with the sleeve on the drag link. Link to comment Share on other sites More sharing options...
Oizarod115 Posted February 19, 2010 Share Posted February 19, 2010 Every thing is perfect but the steering wheel is off to one side now whats up with that. good deal, LCAs is what fixed death wobble on my stock height truck. to center the steering wheel drive straight ahead (like down the driveway or something then park (with the tires straight ahead, steering wheel off) then loosen the bolts on the sleeve that goes from the passenger knuckle to the pitman arm, and rotate the sleeve until the steering wheel/pitman arm are centered up. Link to comment Share on other sites More sharing options...
MjAllTheWay Posted February 19, 2010 Author Share Posted February 19, 2010 man i was guna pull the steering wheel and fix it that way Link to comment Share on other sites More sharing options...
Oizarod115 Posted February 19, 2010 Share Posted February 19, 2010 man i was guna pull the steering wheel and fix it that way don't do that... that's just slack! plus it'll end up where you can turn slightly more one direction than the other. Link to comment Share on other sites More sharing options...
MjAllTheWay Posted February 19, 2010 Author Share Posted February 19, 2010 well it sounded good at the time Link to comment Share on other sites More sharing options...
MjAllTheWay Posted February 19, 2010 Author Share Posted February 19, 2010 is that going to affect toe in or anything Link to comment Share on other sites More sharing options...
Oizarod115 Posted February 19, 2010 Share Posted February 19, 2010 it shouldn't Link to comment Share on other sites More sharing options...
MjAllTheWay Posted February 19, 2010 Author Share Posted February 19, 2010 cool then i know what i got to do. Link to comment Share on other sites More sharing options...
Geonovast Posted February 19, 2010 Share Posted February 19, 2010 Make sure you have the steering wheel unlocked when you do this! Link to comment Share on other sites More sharing options...
MjAllTheWay Posted February 19, 2010 Author Share Posted February 19, 2010 That makes sens i most likely wouldn't have. Link to comment Share on other sites More sharing options...
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