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Is there a fix for wheel wobble on stock suspension?
#2607025
01/15/19 05:05 PM
01/15/19 05:05 PM
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Joined: Feb 2004
Posts: 2,073
Tulsa, Ok
WadeMetzinger
OP
top fuel
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OP
top fuel
Joined: Feb 2004
Posts: 2,073
Tulsa, Ok
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Without converting to aftermarket front end kits is there a way to fix wheel wobble on stock suspension? Here is a video of my wife’s car with some bolt on parts like tubular upper A-arms, aluminum strut rods, strange brakes and cal-track shocks but still running stock lower control arms and torsion bars. It might not hurt anything but it looks like it would be hard on suspension parts and could break something eventually... 1968 Barracuda wheel wobble video
Wade Metzinger 918-809-0987 71 Cuda 9.28@145 -1s, Pglide 68 Cuda 10.64@124 1.45 60's 318->390 eddys Moparts discount code on WIX - moparts www.Filter1.com
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Re: Is there a fix for wheel wobble on stock suspension?
[Re: WadeMetzinger]
#2607049
01/15/19 05:56 PM
01/15/19 05:56 PM
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Joined: Jan 2003
Posts: 13,354
Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,354
Marion, South Carolina [><]
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https://www.youtube.com/watch?v=91dmTS-UvDcHere's a better video of what's happening. This is Tig's car by the way. I can feel mine doing it when it touches down. I don't think it matters what shock you have on it.
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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Re: Is there a fix for wheel wobble on stock suspension?
[Re: jwb123]
#2607060
01/15/19 06:17 PM
01/15/19 06:17 PM
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Joined: Feb 2005
Posts: 20,152
PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,152
PA.
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Doug (dvw) could probably get you straightened out on this if he see's this post.
1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27
Livin and lovin life one day at a time
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Re: Is there a fix for wheel wobble on stock suspension?
[Re: WadeMetzinger]
#2607063
01/15/19 06:20 PM
01/15/19 06:20 PM
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Joined: Jan 2003
Posts: 30,992
Oregon
AndyF
I Win
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I Win
Joined: Jan 2003
Posts: 30,992
Oregon
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Re: Is there a fix for wheel wobble on stock suspension?
[Re: WadeMetzinger]
#2607067
01/15/19 06:27 PM
01/15/19 06:27 PM
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Joined: Nov 2005
Posts: 690
New Hampshire, USA
oldiron
mopar
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mopar
Joined: Nov 2005
Posts: 690
New Hampshire, USA
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Im glad you brought this up. I was told this last season that I was having the same thing and saw it on a vid. I just looked at an older vid and it was not happening. Will check idler/tie rod ends/ball joints/steering box play closely when I get home
Last edited by oldiron; 01/15/19 06:28 PM.
66 Belvedere Vert, 4 Speed/Jerico, slowly, very slowly, getting faster - NA LD Wedge New New Best: 10.56 @129 68 B'cuda 4 gear Jerico - Another New Best of 9.86 & Trying to slow up https://www.youtube.com/watch?v=T4jDLKwd9Gs
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Re: Is there a fix for wheel wobble on stock suspension?
[Re: J_BODY]
#2607194
01/15/19 09:46 PM
01/15/19 09:46 PM
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Joined: Feb 2004
Posts: 34,869
S.E. South Dakota !
bigdad
Still Posting A Lot
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Still Posting A Lot
Joined: Feb 2004
Posts: 34,869
S.E. South Dakota !
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Love my tube K rack steering coil over shocks!!! ....carry on! :j Me too !
The lips of fools bring them strife, and their mouths invite a beating.Proverbs 18:6
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Re: Is there a fix for wheel wobble on stock suspension?
[Re: WadeMetzinger]
#2607212
01/15/19 10:07 PM
01/15/19 10:07 PM
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Joined: Mar 2006
Posts: 9,822
MI, usa
dvw
master
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master
Joined: Mar 2006
Posts: 9,822
MI, usa
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A couple of thoughts. First this can only occur if there is movement or flex. If the control arm bushings, idler arm pivot, or strut rod bushings compress and release you will see positive/negative toe change. Additionally there could be hard part flexing. Control arms, tie rod sleeves, ball joints, and even uni-body. So what gets all this started? My feeling is as the A-arms pivot downward and the front of the car raises, the track becomes narrower. When the tires return to the track surface they are being forced outward trying to return to the static track width. This part of the geometry we can not change. Good condition parts, poly bushings are the first step. My bet as stated earlier is the idler arm pivot bushing is a big factor. Tightening the compression on the front shocks helps by slowing the return to earth. I know mine has done it it on occasion when the shock settings are to loose. Look at Tigs car in the video. The RF is wobbling on the way up.
Doug
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Re: Is there a fix for wheel wobble on stock suspension?
[Re: dvw]
#2607309
01/16/19 01:41 AM
01/16/19 01:41 AM
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Joined: Feb 2007
Posts: 1,608
fresno ca
mikeysmopars
top fuel
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top fuel
Joined: Feb 2007
Posts: 1,608
fresno ca
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My Dart did that same typical Mopar death wabble even with all new bushings, aftermarket uppers and new steering box. A big part of whats going on is we do the alignment specific for drag racing it loses the bump steer and geometry and gain a bunch of caster which works for going straight just not up n down. I went to a Bob's Pro Fab unit with double adjustable shocks and and cured that issue. Much more stable on the top end also. 
Last edited by mikeysmopars; 01/16/19 01:41 AM.
Founder and CEO of the Central Valley Mopar Drag Pack
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Re: Is there a fix for wheel wobble on stock suspension?
[Re: dvw]
#2607373
01/16/19 10:01 AM
01/16/19 10:01 AM
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Joined: Nov 2011
Posts: 287
PA
Harry's Taxi 2
enthusiast
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enthusiast
Joined: Nov 2011
Posts: 287
PA
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A couple of thoughts. First this can only occur if there is movement or flex. If the control arm bushings, idler arm pivot, or strut rod bushings compress and release you will see positive/negative toe change. Additionally there could be hard part flexing. Control arms, tie rod sleeves, ball joints, and even uni-body. So what gets all this started? My feeling is as the A-arms pivot downward and the front of the car raises, the track becomes narrower. When the tires return to the track surface they are being forced outward trying to return to the static track width. This part of the geometry we can not change. Good condition parts, poly bushings are the first step. My bet as stated earlier is the idler arm pivot bushing is a big factor. Tightening the compression on the front shocks helps by slowing the return to earth. I know mine has done it it on occasion when the shock settings are to loose. Look at Tigs car in the video. The RF is wobbling on the way up.
Doug DVW, do you know about how much toe-in/out change you have throughout your suspension travel range?
'86 Maple Grove KOS Mopar low qualifier......true street legal with no power adders.
NOS-used when losing since 1940.
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Re: Is there a fix for wheel wobble on stock suspension?
[Re: J_BODY]
#2607393
01/16/19 11:10 AM
01/16/19 11:10 AM
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Joined: Jul 2008
Posts: 1,534
bronx n.y
one bad fish
pro stock
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pro stock
Joined: Jul 2008
Posts: 1,534
bronx n.y
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Love my tube K rack steering coil over shocks!!! ....carry on! :j me three
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Re: Is there a fix for wheel wobble on stock suspension?
[Re: WadeMetzinger]
#2607426
01/16/19 12:52 PM
01/16/19 12:52 PM
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Joined: Jan 2003
Posts: 8,021
Tulsa OK
Bad340fish
master
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master
Joined: Jan 2003
Posts: 8,021
Tulsa OK
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Wade my car does it just a fraction of that. Mine has RMS tube uppers, RMS Tube Strut rods, and stock lowers with a poly bushing. 5* of positive caster and it drives like a dream on the track and street.
I agree on checking the idler arm but you might also want to take it over to Jim Sams and let him see it.
68 Barracuda Formula S 340
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