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Old 10-15-2005, 10:51 AM   #1 (permalink)
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Dana 60 "Death Wobble!" HELP

Huge death wobble problems. Not the common bump-steer, but that all out, mean-ass whoopin', teeth chattering, wobble that makes it feel like the front end is breaking. What the hell is up with all the Dana 60 equiped vehicles my buddies and I own?? Why does it only happen at 35-55 mph?

I have a 1980 Chevy Crewcab dually 4x4 with 235/85R-16's, 2" suspension lift, a NEW complete King Pin repair kit done on it within 3 mo's, new tie rod & ends, new balanced tires/wheels, hubs, bearings, shocks.

His: 1986 Chevy Suburban 4x4 1 ton w/ 8inch springs, 37's, and a
Dana 60.

And several projects
I know what's wrong with his, but my dually has brand new everything in the front $1000 worth and at 35mph it scares the crap outta me everytime it's driven.

I have Dana 60's on all my project vehicles, and I'm wondering if I want to revert back to a 44 just for drivability sake?? From this site previously, I was told NOT to shim a Dana 60, well then, how do you put a big lift on, and keep the pinion outta the dirt?? Do I have to cut the ends and reweld them on?

Please Help.

(and no I won't sell my pile of dana 60's for $500)(yes, I said pile>)

Last edited by cpydrman; 10-15-2005 at 11:39 AM.
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Old 10-15-2005, 11:15 AM   #2 (permalink)
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What do ya mean the axles "shoots out"? How do the springs look (even though they are brand new)? Perhaps pictures would help as well, as pictures can tell a thousand words vs. trying to understand what someone types.
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Old 10-15-2005, 01:15 PM   #3 (permalink)
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Quote:
Originally Posted by cpydrman
(and no I won't sell my pile of dana 60's for $500)(yes, I said pile>)
Well you can keep your pile but I will take one for $50 (Yes I said $50)
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Old 10-15-2005, 02:07 PM   #4 (permalink)
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For starters, begin by playing with your toe in / out on your alignment... Just keep changing it and eventually, you will find a place where the wobble is almst gone.
If that doesn't work, then just add a hydro assist ram and it will all dissapear for about $250 bucks from Rocklogic or Rockstomper...(or cheaper if you wanna do a home brew setup)
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Old 10-15-2005, 02:10 PM   #5 (permalink)
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Quote:
Originally Posted by cpydrman
Huge death wobble problems. Not the common bump-steer, but that all out, mean-ass whoopin', teeth chattering, wobble that makes it feel like the front end is breaking. What the hell is up with all the Dana 60 equiped vehicles my buddies and I own?? Why does it only happen at 35-55 mph?

I have a 1980 Chevy Crewcab dually 4x4 with 235/85R-16's, 2" suspension lift, a NEW complete King Pin repair kit done on it within 3 mo's, new tie rod & ends, new balanced tires/wheels, hubs, bearings, shocks.

His: 1986 Chevy Suburban 4x4 1 ton w/ 8inch springs, 37's, and a
Dana 60.

And several projects
I know what's wrong with his, but my dually has brand new everything in the front $1000 worth and at 35mph it scares the crap outta me everytime it's driven.

I have Dana 60's on all my project vehicles, and I'm wondering if I want to revert back to a 44 just for drivability sake?? From this site previously, I was told NOT to shim a Dana 60, well then, how do you put a big lift on, and keep the pinion outta the dirt?? Do I have to cut the ends and reweld them on?

Please Help.

(and no I won't sell my pile of dana 60's for $500)(yes, I said pile>)
hello i had to put 2 steering dampers on mine iwas told it was do to pinon angle. i have 12in springs in front plus big tires.crossover steering and all new parts in the d60
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Old 10-15-2005, 03:49 PM   #6 (permalink)
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Tires, I know you said they were balanced, but try somebody elses that you know doesn't have a problem, I've been there, my Dodge did the same thing and I replaced all the draglinks and put dual stab , but you can still feel it try to start shaking so the problem is still there I just covered it up. Just swap the front tires and wheels with somebodys to see if it changes.
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Old 10-15-2005, 03:55 PM   #7 (permalink)
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swap the front to rear tires. also i have found on smaller vehicles that shock placement is a big factor in death wobble.

and maybe you have a pile of d60's because they are all death traps LOL j/k man


but on a serious note. what rebuild kit did you buy and was it a complete kit.

and maybe you do need to cut and turn your knuckles if this is the case.
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Old 10-15-2005, 04:52 PM   #8 (permalink)
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Mine does the same thing(90 GMC v3500 Crewcab 12 in lift 35125016 bfg mudktms)was told it was the kig pins worn out.
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Old 10-15-2005, 07:17 PM   #9 (permalink)
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Quote:
...then just add a hydro assist ram and it will all dissapear...
Hydro assist is not the cure all the time.I have it and it does nothing for it.I either go under the speed that it happens,or haul ass to get above where its gonna happen.What I have heard working for alot of people besides playing with caster and toe is new kingpin preload springs.Or new springs and a couple fender washers on top of the springs to raise the preload a bit.
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Old 10-16-2005, 04:35 PM   #10 (permalink)
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If you just did your kingpins I assume that isn't the problem. If you took the axle out and reinstalled it or swapped it in to begin with what is your caster like?
caster is only adjustable by putting in the proper shims. You should play with your alignment try different caster/pinion angles and mess with your toe. After we 4 linked my buddies front he had the same problem and it was a caster problem.
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Old 10-16-2005, 04:37 PM   #11 (permalink)
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and as far as tires go. If it is tire related you usually can't drive though the wobble like your describing. A tire vibration would only get worse with speed.
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Old 10-16-2005, 09:05 PM   #12 (permalink)
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im running 39's, had death wobble at about 25-30, put a steering stablizer on it, no more problems, exept when aired down to like 8 psi, i get that starting to wobble feeling but it hasnt gone into death wobble since.
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Old 10-17-2005, 02:15 PM   #13 (permalink)
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^^ same as above. im running 39.5's and i had death wobble put a steering stabilizer on and i also found a couple loose bolts in the shackles that might have just added to the problem
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Old 10-17-2005, 03:16 PM   #14 (permalink)
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Thanks for the advice. I still need to know if 60's can be shimmed?? Will put all your suggestions to the test this weekend. Any other info would be greatly appreciated.
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Old 10-17-2005, 03:37 PM   #15 (permalink)
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I know someone that cured their wobble by shimming the kingpin springs with a flat washer. Not enough spring pressure.
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Old 10-17-2005, 09:58 PM   #16 (permalink)
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I don't know if you were planning on going to crossover but that might be an easy way to eliminate kingpin spring deflection. I've heard of alot of guys that run big tires with small amounts of backspacing on their wheels having problems with spring deflection. It just provides too much give. Check out this site http://www.wickedfabrication.com/ima...ydoublearm.jpg these guys are wicked fabrication and their dana 60 high steer arms eliminate the spring with shims pretty sweet.
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Old 10-17-2005, 10:15 PM   #17 (permalink)
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As an expensive last resort, there is someone on here who sells custom made knuckles that run roller bearings top & bottom to eliminate the bushing & spring altogether.
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Old 10-18-2005, 08:59 PM   #18 (permalink)
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nothing sucks like a nasty deathwobble. i watched my brothers truck from my rearview mirror have one on the freeway years ago. he crossed three lanes of traffic and finally stopped it in the grass. i could actually see the tierod bowing up and down like it was a wet noodle. scared the hell out of me. not to mention him.

a pic would be nice. so would some more info.

-how much pinion angle are you running? consider rotating them.
-do you have a stablizer on it? how many , how old?
-are you running stock steering components?

i got pissed a while back with a friends. we rebuilt the kingpins, cut and rotated the knuckles, then went full hydro. with a 1 1/2 inch solid steel tierod on 3/4 inch heims. that cured the shit out of it.

Last edited by tennessee rockhumper; 10-18-2005 at 09:13 PM.
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Old 10-19-2005, 08:12 AM   #19 (permalink)
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I tried all the tricks with mine, playing with the toe in or out, extra washers on the springs, tightining the piss out of every bolt on the front end and none of it made much difference until i put the ram assist on. It cured all of my problems.
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Old 10-19-2005, 01:22 PM   #20 (permalink)
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Couple of years ago i replaced the frt. stock steering stablizer on my v-30
because i was buying new shocks for the truck & decided to get a new matching stab. A week later the frt. end started to have a mean DW. I put the stock one back on & fix the problem The pro comp brand stab. was defected I return it & they replaced it with a new one. They told me they have had some problems. Laters
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