Dang death wobble

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Re: Dang death wobble

Postby spencerdiesel » Mon Jul 11, 2016 2:28 pm

Figured itd be a good time to do the kingpin bushings while the dodge gets new (everything unfortunately) brakes. The passenger side had an offset bushing, I imagine the previous owners attempt to adjust camber. The drivers side had a standard bushing in it.

Something that was brought to my attention; I purposely havent rotated the tires in 7k just to see wear trends. The driver side front is in a lot better shape than the pass. side. The pass. side is cupped more and is worn on the OUTSIDE worse. Both tires are worn more on the outside, but the side with the offset bushing is worse.

Any suggestions or thoughts?
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

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Fuel: THD 6x10 VCO sticks, THD 12 psi piston pump, THD fuel pin, 366 spring, fuel screw 2 turns in, timing to the head/ >1/4”
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Re: Dang death wobble

Postby CumminsPower59 » Tue Jul 12, 2016 7:51 am

You put 7k on the tires before you put king pin bushings in, correct?

Have you had the toe-in/out checked by a shop on a alignment rack/machine? One can eyeball it, or measure it out fairly close, but a shop can get it dead nuts on. Sounds like it has too much toe-in, making the outside edges scrub more than they should.
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Re: Dang death wobble

Postby DodgeFreak » Tue Jul 12, 2016 1:11 pm

toe should cause feathering also, not only will an alignment shop be able to tell toe they should be able to see any camber issues.
92 D350 Cab and Chassis. Auto stock, wiring gremlins. 330k miles
92 W250 Ext cab rotted completely out. Auto, pump maxed, 215 ppump nozzles, Denny T2 pin.
85 D350 single wheel, converted to cummins, getrag, turned up 2 turns and afc screw flush.
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Re: Dang death wobble

Postby PToombs » Tue Jul 12, 2016 5:32 pm

If the king pins are loose, then replace them and then get an alignment. No use getting it done then having to do it again after they tell you the king pins are bad.
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Re: Dang death wobble

Postby spencerdiesel » Wed Jul 13, 2016 3:18 am

I had the truck aligned about 12-14k ago and it was toe'd in an eighth. The more I learn it sounds like modern radial tires can be real close to straight on, without any toe in? What is correct toe in "?
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

H1C/18

Fuel: THD 6x10 VCO sticks, THD 12 psi piston pump, THD fuel pin, 366 spring, fuel screw 2 turns in, timing to the head/ >1/4”
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Minimum 60% WMO full time since Sep. 2018
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Re: Dang death wobble

Postby spencerdiesel » Wed Jul 13, 2016 7:22 pm

To start with a baseline I put the factory kingpin bushings in. Ill put it on the Hunter rack and see what numbers it gives me.

Bigger issue at hand; it death wobbled bad today. First time its done it since my sidewall blow out incident. The trend I'm seeing is wheel position on the hub.....maybe. Seeing as that's been something thats happened every time I've had DW or that the DW subsided - after removing and reinstalling tire & wheel.
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

H1C/18

Fuel: THD 6x10 VCO sticks, THD 12 psi piston pump, THD fuel pin, 366 spring, fuel screw 2 turns in, timing to the head/ >1/4”
Muffler delete

Minimum 60% WMO full time since Sep. 2018
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Re: Dang death wobble

Postby DodgeFreak » Wed Jul 13, 2016 7:32 pm

only way it can be the wheel is if its bent (which shouldn't just come and go) or holes are egged. wheels are lug centric so if you do the star pattern torqueing them even if you don't you shouldn't get a death wobble. Check the plate that the steering box mounts to. they tend to crack.
92 D350 Cab and Chassis. Auto stock, wiring gremlins. 330k miles
92 W250 Ext cab rotted completely out. Auto, pump maxed, 215 ppump nozzles, Denny T2 pin.
85 D350 single wheel, converted to cummins, getrag, turned up 2 turns and afc screw flush.
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Re: Dang death wobble

Postby spencerdiesel » Wed Jul 13, 2016 7:37 pm

Thanks I'll check the plate. I do know that the truck only wobbles in a LEFT curve between 40 - 50 mph, and I know the left side is the problem side.......but the wobble is erratic in that it will either happen often in left curves, or it will not happen at all (has not DW ANY in the past 3 months).
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

H1C/18

Fuel: THD 6x10 VCO sticks, THD 12 psi piston pump, THD fuel pin, 366 spring, fuel screw 2 turns in, timing to the head/ >1/4”
Muffler delete

Minimum 60% WMO full time since Sep. 2018
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Re: Dang death wobble

Postby DodgeFreak » Wed Jul 13, 2016 10:54 pm

make sure your hubs aren't loose either.
92 D350 Cab and Chassis. Auto stock, wiring gremlins. 330k miles
92 W250 Ext cab rotted completely out. Auto, pump maxed, 215 ppump nozzles, Denny T2 pin.
85 D350 single wheel, converted to cummins, getrag, turned up 2 turns and afc screw flush.
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Re: Dang death wobble

Postby spencerdiesel » Sun Jul 17, 2016 7:01 pm

put new wheel bearings in the front and the hubs are good
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

H1C/18

Fuel: THD 6x10 VCO sticks, THD 12 psi piston pump, THD fuel pin, 366 spring, fuel screw 2 turns in, timing to the head/ >1/4”
Muffler delete

Minimum 60% WMO full time since Sep. 2018
spencerdiesel
14mm rotor
 
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Re: Dang death wobble

Postby spencerdiesel » Thu Jul 21, 2016 7:52 am

Checked the steering gear plate, it's got a sliver about 1/2" but otherwise none. Something I noticed, the steering gear has NO nuts holding it to the plate........and by the looks of it hasn't had any in years.......but there are no shiny spots to indicate any rubbing or sliding on the thread posts.........But yes I'm putting some nuts on there :shock:

I'm sure most of the issue is tires, they are cupped too bad and (were) too far out of balance to be any kind of ok.

So ill be getting tires, tie rod ends and possibly a drag link.

Big question: what are y'all's opinions on balance beads vs wheel weights? We put beads in my gf's hankooks and it's been great for 6 months. It was shimmying hard with the old coopers and wheel weights.
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

H1C/18

Fuel: THD 6x10 VCO sticks, THD 12 psi piston pump, THD fuel pin, 366 spring, fuel screw 2 turns in, timing to the head/ >1/4”
Muffler delete

Minimum 60% WMO full time since Sep. 2018
spencerdiesel
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Re: Dang death wobble

Postby DodgeFreak » Thu Jul 21, 2016 4:47 pm

The box is tapped isn't it??? There really is no need for nuts if the box is tapped and the bolts are tight. you can put some on if you'd like but there's no way it would still be on there if it didn't have something holding it on.
92 D350 Cab and Chassis. Auto stock, wiring gremlins. 330k miles
92 W250 Ext cab rotted completely out. Auto, pump maxed, 215 ppump nozzles, Denny T2 pin.
85 D350 single wheel, converted to cummins, getrag, turned up 2 turns and afc screw flush.
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Re: Dang death wobble

Postby PToombs » Thu Jul 21, 2016 4:57 pm

I put balance beads in my H2 wheels, rides pretty good. I don't have huge tires on it, I think they are 265/70-17s. I was going to do the same in my new wheels for the 1st gen but I couldn't get any in the time frame I had.
pete

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Re: Dang death wobble

Postby spencerdiesel » Fri Jul 22, 2016 6:37 pm

That's good news then! I'm glad you said that dodgefreak, I was about to wig :D

Pete I've heard a lot of people love them, and there's those that have had a bad run with the beads. How many oz do you run per tire? Do all tires have a dot for the heavy side, that lines up with the dimple in the wheel?
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

H1C/18

Fuel: THD 6x10 VCO sticks, THD 12 psi piston pump, THD fuel pin, 366 spring, fuel screw 2 turns in, timing to the head/ >1/4”
Muffler delete

Minimum 60% WMO full time since Sep. 2018
spencerdiesel
14mm rotor
 
Posts: 1106
Joined: Tue Oct 27, 2015 4:02 pm
Location: Brevard, NC
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Re: Dang death wobble

Postby Remps » Fri Jul 22, 2016 9:02 pm

When i put 4 new tires on my W250 a couple years ago the tire guy put beads in, told me they would work fine. Above 75 mph started shaking pretty bad. Got them rebalanced with sticky weights for free, completely got rid of the shake. I also think my 245's are kinda on the small side to be using beads anyway.
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