Pontiac - Race The next Level

          
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  #1  
Old 01-25-2014, 02:25 AM
john marcella john marcella is offline
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Default Crazy front wheel wobble vid

I would like to know what causes this !!!!!!!

http://www.youtube.com/watch?v=OdgQ4...ature=youtu.be

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  #2  
Old 01-25-2014, 02:51 AM
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Got some death wobble there. Sometimes called speed wobble.

Couldn't tell ya what's causing it specifically though.

Suspension new, or just the problem new?

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  #3  
Old 01-25-2014, 03:00 AM
john marcella john marcella is offline
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Originally Posted by NBF823 View Post
Got some death wobble there. Sometimes called speed wobble.

Couldn't tell ya what's causing it specifically though.

Suspension new, or just the problem new?

Stock steering, going to Smith racecraft front rack kit to try and fix.

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  #4  
Old 01-25-2014, 03:35 AM
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Looks like a neutral or negative caster setting and some Bump Steer issues.

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Old 01-25-2014, 09:47 AM
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Will be worth a solid tenth ( 0.1sec) & another 30+ years.

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Old 01-25-2014, 10:06 AM
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I'd check toe in and caster also.

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  #7  
Old 01-25-2014, 10:59 AM
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That's one of the worse I've seen , I fixed mine with and Ed Quay damper


Camaros Firebirds









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Steering Damper Kit
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This weld-on kit is designed to minimize front wheel shimmy that occurs after a wheel stand. The kit is easy to install and allows the oil pan to center link clearance to be maintained.
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  #8  
Old 01-25-2014, 01:51 PM
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Looks like a bump steer issue. Do you have limiters on it? Make a bump steer gauge kit and check it with suspension at full extend. If stock Im betting its off 1/2" or more at full extend. Tying it down will bandaid the problem.

Mine did the same until I put a rack in it.

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Old 01-25-2014, 01:51 PM
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Quote:
Originally Posted by NBF823 View Post
Got some death wobble there. Sometimes called speed wobble.

Couldn't tell ya what's causing it specifically though.

Suspension new, or just the problem new?
Agree, Typically caused by most front ends with stock suspension by Neutral or Toe-out on the suspension. Can also be caused by large steering component clearances from worn parts.

Toe-in might help some but if a clearance issue then new components required asap.


Ideal is tight clearances and toe-in with proper caster and camber on a stock suspension.

A rack will not solve if Upper and lower suspension components are worn or cracked.

I would check every piece of that front end including the steering box and then make a decision on if you need an upgrade.

Tom Vaught

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Old 01-25-2014, 03:20 PM
john marcella john marcella is offline
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Quote:
Originally Posted by Tom Vaught View Post
Agree, Typically caused by most front ends with stock suspension by Neutral or Toe-out on the suspension. Can also be caused by large steering component clearances from worn parts.

Toe-in might help some but if a clearance issue then new components required asap.


Ideal is tight clearances and toe-in with proper caster and camber on a stock suspension.

A rack will not solve if Upper and lower suspension components are worn or cracked.

I would check every piece of that front end including the steering box and then make a decision on if you need an upgrade.

Tom Vaught


All of it is going in the can. Not phucking around with this one. Its dangerous and is scrubbing ET.

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Old 01-25-2014, 03:28 PM
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Quote:
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All of it is going in the can. Not phucking around with this one. Its dangerous and is scrubbing ET.

And actuary years from the driver's life. Think you could sell that stock stuff...

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Old 01-25-2014, 03:39 PM
john marcella john marcella is offline
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Quote:
Originally Posted by Half-Inch Stud View Post
And actuary years from the driver's life. Think you could sell that stock stuff...
I would sell if someone wanted it. Its a flaming river manual box.

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  #13  
Old 01-25-2014, 03:46 PM
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Quote:
Originally Posted by john marcella View Post
All of it is going in the can. Not phucking around with this one. Its dangerous and is scrubbing ET.
Very nasty Video for sure. Even worse that Ray Cox deal on launch, I think.

Good luck with your project upgrade. Check the frame upper and lower control arm mount locations for cracks too. Have seen them on F-Birds more so vs A-Bodies.

Tom Vaught

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  #14  
Old 01-25-2014, 05:16 PM
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Quote:
Originally Posted by Blued and Painted View Post
Looks like a neutral or negative caster setting and some Bump Steer issues.
Quote:
Originally Posted by jdw_poncho View Post
Looks like a bump steer issue. Do you have limiters on it? Make a bump steer gauge kit and check it with suspension at full extend. If stock Im betting its off 1/2" or more at full extend. Tying it down will bandaid the problem.

Mine did the same until I put a rack in it.
Looks like a bump steer issue to me as well... but I'm no suspension expert.

Maybe try this? http://www.racecraft.com/index.php?m...oducts_id=1923

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  #15  
Old 01-25-2014, 05:17 PM
john marcella john marcella is offline
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I think it has to do with scrub radius??

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  #16  
Old 01-25-2014, 07:57 PM
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Quote:
Originally Posted by R 70 Judge View Post
Looks like a bump steer issue to me as well... but I'm no suspension expert.

Maybe try this? http://www.racecraft.com/index.php?m...oducts_id=1923
X2. This will correct.

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Old 01-25-2014, 08:06 PM
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I think the tire's just scared from all the Pontiac power.

You got the poor thing worried.

  #18  
Old 01-25-2014, 09:04 PM
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Quote:
Originally Posted by john marcella View Post
I would sell if someone wanted it. Its a flaming river manual box.
Im interested in your FR gearbox if it will fit my 69, can you provide a PN?

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  #19  
Old 01-25-2014, 09:04 PM
john marcella john marcella is offline
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It will fit 69. 100 bucks

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  #20  
Old 01-25-2014, 09:08 PM
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Is it the OEM style or the generic race version?

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E-heads by Dave Wilcox/Comp Cams 300B-6 flat solid
850DP on E-85 by Eric Niefert/T2 1" plastic spacer
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https://m.youtube.com/watch?v=ePCu2v...ature=youtu.be

1.37 60' 6.26 @ 109 half track, 9.86 @ 136 1/4 mile, #3350 11/26/16 at Richmond Dragway (125th pass on new engine)
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