Author Topic: death wobble (Read 5153 times)

90toy · « **on:** Jul 08, 2007, 08:32:44 PM »

i know someone asked this a while ago but i cant find it now.

anyway....i just did a sas on my 90' 4runner v6, and sometimes when i get up to a steady speed the steering wheel starts going back and forth faster and faster until i slow way down. its very scary and i cant seam to figure it out. i dont even have to be going all that fast for it to happen. its even worse when i first start driving, after its been sitting for a while, and the tires have flat spots. but i cant blame the tires because it did the same thing when i was running 33" tires.
anyone?

DTB · « **Reply #1 on:** Jul 08, 2007, 08:34:54 PM »

what is your toe in set at? how did you align it? re-check torque all steering components. what is your set up exactly?

Ramrod · « **Reply #2 on:** Jul 08, 2007, 08:51:17 PM »

tighten your shackles and put on a steering stabilizer

90toy · « **Reply #3 on:** Jul 08, 2007, 08:52:07 PM »

the alignment is off a little off but only by about half an inch, toed out, when all the weight if on the tires. would this cause it?? how should i set the toe in?
i have toy rears up front with TG high steer, 36" tsl's on 15x10" rims.

90toy · « **Reply #4 on:** Jul 08, 2007, 08:53:19 PM »

stabilizer is on, and shackles are all tight. i'll have to double check everything tomorrow.

79coyotefrg · « **Reply #5 on:** Jul 09, 2007, 08:59:01 AM »

Quote from: 90toy on Jul 08, 2007, 08:52:07 PM

the alignment is off a little off but only by about half an inch, toed out, when all the weight if on the tires. would this cause it?? how should i set the toe in?
i have toy rears up front with TG high steer,

traitor Gear

so the front is 1/2 inch wider than the rear?? loosen the locknuts on the tierod and rotate it to bring the front of the tires in, 1/4 inch or so

and if the toe is different with it on jacks than it is on the ground you need to rebuild the knuckles,mainly new trunion bearings, you will NEVER get rid of the death wobble with worn out trunion bearings

Hottrod81 · « **Reply #6 on:** Jul 09, 2007, 04:00:41 PM »

Check the bearings.

90toy · « **Reply #7 on:** Jul 10, 2007, 07:35:55 AM »

just checked everything, and it turns out the wheel spacer nuts were backed off a nice bit. i guess that could have caused it. i tightened everything else and am now gonna give it an alignment.

so the front of the tires should be toed in 1/4 inch??? or toed out???

79coyotefrg · « **Reply #8 on:** Jul 10, 2007, 08:40:31 AM »

i set mine as close to 0 as i can

90toy · « **Reply #9 on:** Jul 10, 2007, 11:52:26 AM »

thanks.

just took her for a run after i tightened every nut and bolt in the front end and gave her an alignment. she couldnt be better. now if only i had round tires

Mnmstoy · « **Reply #10 on:** Jul 10, 2007, 06:42:10 PM »

Never - tow out...that will cause the steering to go to the left or right. Tow - in is better.... if you had to make a choice. Plus, you get better traction (tow-in).
Mike

Volcom · « **Reply #11 on:** Jul 11, 2007, 12:32:30 PM »

Make sure your steering arms nuts are tight. Mine will death wobble bad if they are loose. Check them often, after every run!

monstertoy87 · « **Reply #12 on:** Jul 14, 2007, 12:13:24 AM »

im trying to work out the same problem

DTB · « **Reply #13 on:** Jul 14, 2007, 01:24:32 PM »

toe in is set at 1/8 inch. I think this is probably the most accurate way to set it. Get 2 pieces of (straight) steel the same length as the diameter of your tire (In my case 36 inches or 3 feet). Clamp them to the rotors and make sure they are level. Then measure and adjust tie rod until it is correct. If you have knobby tires there isnt really an "accurate" way to measure.

Stinky · « **Reply #14 on:** Jul 15, 2007, 04:20:12 PM »

it also has ALOT to do w/ ure tires bein balanced.... everyone kept tellin me that i needed to change my toe n all this, yet when i put the tires on a tire machine, it was sooooo violent... n it was only one tire...n it just shook the hell out of the truck.... friend of mine's f-1 did the SAME thing, just ended up bein a tire wayyy out of balance.... mine wasnt balance-able... i think i got a blem tho...

i took care of them in the proper fashion also haha

http://s137.photobucket.com/albums/q220/hardbodyty/?action=view&current=DSCF6183.flv

DTB · « **Reply #15 on:** Jul 15, 2007, 04:29:11 PM »

monstertoy87 · « **Reply #16 on:** Jul 16, 2007, 09:18:43 PM »

i think my problem may be my worn out 35 boggers

Volcom · « **Reply #17 on:** Jul 17, 2007, 10:37:49 AM »

I know quite a bit of my DW is from my completely worn out, missing half of the outer lugs TSL's

MiniSimp · « **Reply #18 on:** Jul 17, 2007, 10:52:00 AM »

Quote from: monstertoy87 on Jul 16, 2007, 09:18:43 PM

i think my problem may be my worn out 35 boggers

Quote from: Volcom on Jul 17, 2007, 10:37:49 AM

I know quite a bit of my DW is from my completely worn out, missing half of the outer lugs TSL's

Both of you can solve this by using Airsoft pellets for balancing.

Stinky · « **Reply #19 on:** Jul 17, 2007, 02:04:33 PM »

Quote from: MiniSimp on Jul 17, 2007, 10:52:00 AM

Both of you can solve this by using Airsoft pellets for balancing.

ehhh, gotta use a ton of em.... just use bb's... their more effective, doesnt take as many, ya gotta break the bead anyways.... everyone says they'll speed up the rotting out of a wheel, by the time they rot the wheel out, you'll be retired n the rims will be at a scrapyard, or being melted down in a mill....

Stinky · « **Reply #20 on:** Jul 17, 2007, 02:12:07 PM »

Quote from: Volcom on Jul 17, 2007, 10:37:49 AM

I know quite a bit of my DW is from my completely worn out, missing half of the outer lugs TSL's

ya, it makes it nearly impossible to balance...because the lugs are so far off center, and the weights on the rim lip are just simply not effective enough

Volcom · « **Reply #21 on:** Jul 17, 2007, 08:51:40 PM »

Quote from: MiniSimp on Jul 17, 2007, 10:52:00 AM

Both of you can solve this by using Airsoft pellets for balancing.

I am, about 12 oz's per tire !!

MiniSimp · « **Reply #22 on:** Jul 17, 2007, 09:15:34 PM »

Quote from: Volcom on Jul 17, 2007, 08:51:40 PM

I am, about 12 oz's per tire !!

oh well.

monstertoy87 · « **Reply #23 on:** Jul 17, 2007, 09:54:25 PM »

how do u figure the amount of bb's to put in each tire

MiniSimp · « **Reply #24 on:** Jul 17, 2007, 09:55:27 PM »

http://www.innovativebalancing.com/BigTirechart.htm

Stinky · « **Reply #25 on:** Jul 18, 2007, 12:17:50 PM »

ehhh, thats not aways the necessary amount tho... could take more n vice-versa...

93tonkatoy · « **Reply #26 on:** Jul 18, 2007, 07:02:39 PM »

ok, i looked at that page and also went to the link at the bottom of the page. From what the two pages combined say, IMHO, is the best way to do it would be to get new tires balanced (as close as possible) then add the self balancing media, and

.

anyone get the same idea?

seafarinman · « **Reply #27 on:** Jul 19, 2007, 08:15:33 AM »

I just finished my SAS on my 94 Toyota. I am running 48" RUF and I discovered the DW. This was a problem because of the offset spring pin coupled with the stock spring pads messed up the caster. I installed a 6* shim and verified that everything else was tightened correctly and my DW is gone. I haven't installed my steering stabilizer yet either.

MiniSimp · « **Reply #28 on:** Jul 19, 2007, 08:29:43 AM »

Quote from: seafarinman on Jul 19, 2007, 08:15:33 AM

I just finished my SAS on my 94 Toyota. I am running 48" RUF and I discovered the DW. This was a problem because of the offset spring pin coupled with the stock spring pads messed up the caster. I installed a 6* shim and verified that everything else was tightened correctly and my DW is gone. I haven't installed my steering stabilizer yet either.

Yeah, common problem with RUF.
Solution is either shims, drop the front hanger to 3.75" lower than it is on a stock solid axle truck, or in my case...BB's in the tires.

Stinky · « **Reply #29 on:** Jul 19, 2007, 01:43:11 PM »

haha bb's ftw...

btw, wat the hells RUF?? thats a new one to me...

90toy [OP]

90toy [OP]

90toy [OP]

90toy [OP]

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