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HORRIBLE WHEEL HOP AT TRACK

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Old 10-30-2009, 09:39 PM
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Car: 1991 Camaro Z28
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Axle/Gears: Moser 12 bolt, 4.11 gears
HORRIBLE WHEEL HOP AT TRACK

hey guys took my car to track tonite. 9.20@80 mph in the 1/8. i have a mostly stock TPI 350 with a tci 700r4 trans and 3.73 gears with a piece of garbage powertrax locker. im runnin stock suspension with the exception of eibach sportline lowering springs. upon launching and when it shifts to second the wheel hop is unbearable, what do i do to remedy the situation?
Old 10-30-2009, 09:43 PM
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Car: '82 Z28
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Axle/Gears: Currie 9", 4.56 gears
Re: HORRIBLE WHEEL HOP AT TRACK

Lower control arm relocation brackets or LCARB for short. You can get either bolt in or weld in types from different companies. That will correct the control arm angle since you have a lowered car, helps on stock height cars too.
Old 10-30-2009, 10:43 PM
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Re: HORRIBLE WHEEL HOP AT TRACK

I'll 2nd that.
Old 10-31-2009, 12:56 AM
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Re: HORRIBLE WHEEL HOP AT TRACK



Lowering the car changes suspension geometry. You want the LCA parallel to the ground or up slightly at the front. Lowering the car puts the front mount lower than the rear and really screws up the geometry. Using relocation brackets allows you to lower the position of the rear mount to match the position of the front mount. Putting the rear much lower than the front can cause just as many problems.
Old 10-31-2009, 03:00 AM
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Re: HORRIBLE WHEEL HOP AT TRACK

Do you still have the stock LCA bushings or torque arm bushing?
Old 10-31-2009, 08:12 AM
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Re: HORRIBLE WHEEL HOP AT TRACK

yes, completely stock in the rear. what brand suspension components would be best for me to use
Old 10-31-2009, 02:36 PM
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Re: HORRIBLE WHEEL HOP AT TRACK

Poly bushings to replace the rubber ones should really help. There are some manufacturers listed in this thread to look through: https://www.thirdgen.org/forums/afte...lers-good.html
Old 10-31-2009, 04:25 PM
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Car: 91 Camaro RS
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Transmission: 700R4
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Re: HORRIBLE WHEEL HOP AT TRACK

weird. researching and pricing today... SKU number 210-S through SPOHN

http://www.spohn.net/shop/1982-1992-...Rear-Ends.html

hope that this is a long the lines of what you are looking for.. and this is a weld in piece.
Old 10-31-2009, 06:12 PM
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Axle/Gears: Built 10bolt w/3.73s
Re: HORRIBLE WHEEL HOP AT TRACK

Originally Posted by last_
weird. researching and pricing today... SKU number 210-S through SPOHN

http://www.spohn.net/shop/1982-1992-...Rear-Ends.html

hope that this is a long the lines of what you are looking for.. and this is a weld in piece.
This what I have on my car, definitely worth the couple of bucks it costs, especially if you know how to weld. I rebuilt and upgraded my rear suspension all at once, so I can't say exactly how much each part contributes, but its a world of difference. I attribute a lot of it to relo brackets.
Old 10-31-2009, 06:13 PM
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Re: HORRIBLE WHEEL HOP AT TRACK

thanks for yall's input. ordered the spohn relocation brackets and adjustable lower control arms, will post improvments. thanks again!
Old 10-31-2009, 06:59 PM
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Re: HORRIBLE WHEEL HOP AT TRACK

The SportLines aren't the best spring set for drag racing either. And I'm willing to bet you have stock shocks on with the lowering springs. That's part of the problem there.
Old 10-31-2009, 07:50 PM
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Re: HORRIBLE WHEEL HOP AT TRACK

what shocks do i need? bc i am still runnin the stock ones, i like goin to the track but i also like hittin the twisties to show the honda kids v8 cars can handle too
Old 10-31-2009, 08:19 PM
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Re: HORRIBLE WHEEL HOP AT TRACK

It's hard to strick a balance between handling and drag racing in the shock department (or anywhere else haha). I run KONIs on my car because I like taking the twisties like you mentioned. But, at $700-800 a set, they're not for everyone. And from a pure drag racing point of view, they are too stiff for the needed weight transfer. Just as a side note, the SportLines aren't the best spring for handling purposes, either. They are a little to soft for the ride height they give you.
I would think that the most gains you'll see right now for drag racing would be in replacing the panhard bar, the lower control arms, and installing the LCARBs as mentioned. Replacing the torque arm bushing would help as well if you don't want to swing the money for a new arm. This should eleminate most of you wheel hop, then you can decide which way you want to go with the shocks.

Last edited by 91_5.7_TPI; 10-31-2009 at 08:24 PM.
Old 11-01-2009, 01:11 AM
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Re: HORRIBLE WHEEL HOP AT TRACK

Originally Posted by 91_5.7_TPI
I would think that the most gains you'll see right now for drag racing would be in replacing the panhard bar, ...
That won't help make the car go any faster. An adjustable one will help center the rear though.
If you have rod end LCA's, then an aftermarket panhard bar might help.
Old 11-01-2009, 12:03 PM
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Re: HORRIBLE WHEEL HOP AT TRACK

No, it won't make the car go any faster, but it will help the car to hook up better and not have the wheel hop it has now. That will most likely lessen his 60 ft times and his ET. The stock piece has worn out rubber bushings and the bar itself flexes, so an aftermarket tubular piece would eliminate much of that. It wouldn't help as much as the LCAs and LCARBs, but I think it would in some degree.
Old 11-01-2009, 01:48 PM
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Re: HORRIBLE WHEEL HOP AT TRACK

Originally Posted by 91_5.7_TPI
No, it won't make the car go any faster, but it will help the car to hook up better and not have the wheel hop it has now. That will most likely lessen his 60 ft times and his ET. The stock piece has worn out rubber bushings and the bar itself flexes, so an aftermarket tubular piece would eliminate much of that. It wouldn't help as much as the LCAs and LCARBs, but I think it would in some degree.
The only reason I could see a stock panhard bar causing wheel hop is if the rubber bushings are causing binding, but that doesn't seem very relevant because of the length of the bar.
Why does it matter if the bar and bushings flex? It shouldn't anyways, the force on the bar is minimal when going straight.
Old 11-01-2009, 03:12 PM
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Re: HORRIBLE WHEEL HOP AT TRACK

I meant flex along the length of the bar- compressing and expanding. I might be left field with this, but I would think that even this slight motion would allow unwanted movement in the rear suspension. Might not lead to wheel hop, but movement in any suspension linkage is generally unwanted. I'm probably wrong, but he also said he likes the twisties, and I know that the stock PHB isn't the best for cornering so he'd be ahead in at least that department haha.
Old 11-01-2009, 04:10 PM
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Re: HORRIBLE WHEEL HOP AT TRACK

Originally Posted by 91_5.7_TPI
... but he also said he likes the twisties, and I know that the stock PHB isn't the best for cornering so he'd be ahead in at least that department haha.
Ah, yes, I didn't pay attention to that. An aftermarket panhard bar will definitely help then. Even though my Camaro was my daily when I got an aftermarket panhard bar, I immediately felt the difference. Definitely worth the money if you like corners, or even if you just drive your car on the street.
Old 11-01-2009, 06:52 PM
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Re: HORRIBLE WHEEL HOP AT TRACK

Yeah, I think the PHB was the first one or two things I put on my car. It surprised me how much better the car felt.
Old 11-03-2009, 01:17 PM
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Re: HORRIBLE WHEEL HOP AT TRACK

got my parts today, track on sat weather permitting, will post improvements, thanks for your help!!
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