death woble

[pedro cruz]

Thanks for receiving me in your Forum.

I own a Wrangler from 2009 wich was lifted 2 inc. with Old Man Emu coil springs, have already changed Trackbar,Steering bar,and the radius bar ,Anyway when speed reaches 70 miles sometimes i still feel let me say the begining of the Death Woble, My tyres are standard 265/70-17, So here comes my question: 7# positive caster is a good number? Thanks for your help.

 

[TerryMason]

Welcome to Jeepz.com Pedro

7 degrees of caster should be good. Did this start after adding a lift, or did it develop over time? Death wobble is often the result of worn components, so I'd start by going over everything and re-torquing your bolts.

Here is an article I wrote previously:
http://www.jeepz.com/forum/suspension/29510-wrangler-death-wobble-what-causes-how-fix.html

 

[Jester32]

Only problem is. New wrangler you will never get 7 degrees caster with out destroying your pinion angle which takes priority. As long as its over 3 degrees and put your toe at about .25 degrees positive. It should drive good. I'm a Chrysler alignment tech. Done lots. If its a real stubborn wobble you can align it with -.20 degrees toe and it will be gone but negative toe is not ideal.

 

[Jester32]

But terry is correct with the 7 degree point. That is ideal.

 

[TerryMason]

That's good to know that you can go down to 3. I had a heck of a time trying to dial mine in - I think I ended up around 6 or so before it felt OK.

 

[Jester32]

Ya. Offset ball joints can get you closer to. And keep the pinion angle good.

 

[pedro cruz]

Only problem is. New wrangler you will never get 7 degrees caster with out destroying your pinion angle which takes priority. As long as its over 3 degrees and put your toe at about .25 degrees positive. It should drive good. I'm a Chrysler alignment tech. Done lots. If its a real stubborn wobble you can align it with -.20 degrees toe and it will be gone but negative toe is not ideal.

Thank you Jester for your tips. Yesterday I had a new alignment done with the values that you sugested and the car seems to be more stable. Idid not notice those vibrations that come before the violent shaking of the DW. It seems quite ackward that when questioned about this the professionalJEEP team had just sugested it was nothing more than a problem with the tyres...Best regards