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Old 02-26-2005, 07:00 PM
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Wheel hopping monte

Ever since putting a posi, cargo coils and good tires under my 85 monte, I get wheelhop whenever i floor it from a standstill on dry pavement.
Is there any way to remidy this?

Also, what car's steering box (quick ratio) will interchange with mine?

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Old 02-26-2005, 09:00 PM
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As for the wheel-hop, I can't help you there. But the steering boxes from any '78 to '88 GM G-body (Monte Carlo, Olds Cutlass, Buick Regal, Pontiac Grand Prix) is a direct bolt-on if I am thinking straight. I believe also that Olds 442's have a closer ratio box that is the most desirable to find. I think those are the '86, '87, '88s, though. I may be wrong...
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Old 02-27-2005, 11:16 AM
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The only way to remedy wheel hop is to keep your axel houseing from wanting to spin. See when you accelarate the pinon trys to climb the gear in the rearend, resulting in the axel houseing wanting to twist instead of your wheels turning. A simple soulution to your problem is traction bars, I would recomend Competition Engineering Part #2121.

If this wont help you have someting else wrong and the car should be taken to an alignment shop for a check of all the bushings and mounts.
Hope this helps you.....

Holder350.....
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Old 02-28-2005, 03:57 AM
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Yes i also agree that 90 percent of the time wheel-hop is curred with the addition of traction bars or anything that absolutley stops your rear axle from "wrapping up" hope it works out .... if not ... be careful cause if your leaf springs might " jingle jangle" and snap. I've had this happen and its a pain in the but.
bill
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Old 02-28-2005, 08:23 AM
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wheel hop on a 4 bar

Quote:
stops your rear axle from "wrapping up"
Leaf springs wrap up, not 4 bars.

There is 2 cures.

Edelbrock antihop bars.
http://www.edelbrock.com/automotive/index.html
1964-72 GM A-Body Rear Anti-Hop Bars ....#5213

or

Lower lift bars available at Jegs.
http://www.jegs.com/cgi-bin/ncommerc...57&prmenbr=361
550-41046 1964-72 Chevelle/GTO/Malibu/LeMans/Cutlass $184.99

I have a G body and use the lift bars. I use an aluminum center section and was afraid the anti-hop bars might break a piece off. I would not have put cargo coils on and I would go to the 50/50 rear drag shocks. Sway bars will also cause traction problems.

Last edited by bracketeer; 02-28-2005 at 08:29 AM.
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Old 02-28-2005, 09:45 AM
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wheel hop

The first thing i would do is change the control arm bushings over to polyurethane and box both the upper and lower arms. This fixes about 75 percent of the "A" "G" body gm cars......

You can also add the no-hop bars. They are very useful in eliminating wheel hop but you will need to check you pinion angle after installing them because they will usually put it up in the negitive numbers......

keith
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Old 03-01-2005, 04:00 AM
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Just some general comments on "wheel hop" and "tire shake": These problems arise when two of the tire's vibration modes are resonant. Specifically, the tire will vibrate as it encounters bumps in the roadway and, also, when it encounters variations in torsional loadings. So, when you "pop the clutch," you load the tire torsionally and, as the suspension "twitches," you excite the other vibration mode. If the two feed on each other, you have "wheel hop" or "tire shake."

So, there are at least 3 ways to tackle the problem. One would be to simply use more shock damping, but this usually isn't very effective.

The second would be to limit the exciting forces. But, since the idea of accelerating slowly has little appeal, you can only work to limit unwanted suspension movement. This is where the traction bars, 4links, etc. come in.

Finally, you can go to the source of the problem and attempt to change the resonant frequency in one of the vibration modes. Tire air pressure usually has little effect, but it doesn't hurt to try it. More effective changes would include a change in wheel width, wheel offset, tire section ratio, or even tire manufacturer.

Tire shake, as I'm sure you know, is a HUUUGE problem with dragster owners, and, when you don't have shocks or a suspension, the answer has to be found in that last category.
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Old 03-01-2005, 04:02 PM
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One thing he is not experiancing is tire shake. Pro Stock, TA/D, TA/FC, TF/D, TF/FC yes they have problems with it, but not a 85 Monte.
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Old 03-02-2005, 03:38 AM
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Quote:
Originally Posted by 1ownerT
One thing he is not experiancing is tire shake. Pro Stock, TA/D, TA/FC, TF/D, TF/FC yes they have problems with it, but not a 85 Monte.
Yes, I would agree, but only because we've decided to define the terms in this manner. When the problem arises on an '85 Monte Carlo...or, generally, any suspended car..., we call it "wheel hop." When it occurs on a 300+ mph dragster...with no suspension..., we call it "tire shake." But, I would maintain that the two problems are "cousins," and that the causes and solutions are similar.
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Old 03-02-2005, 09:45 AM
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Correction

Quote:
box both the upper and lower arms
Only the lower bars need to be boxed. The rearend twists upwards causing the lower bars to bend. The upper bars are being pulled so they don't bend. Only the lowers need boxing.
Quote:
The first thing i would do is change the control arm bushings over to polyurethane
I forgot to mention this in my first post. I use Energy Suspension bushings on the upper arms. The SSM lower bars do not require them.
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Old 03-06-2005, 08:20 PM
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Wheel hop and steering box info.

When I rebuilt my Malibu wagon I installed urethane bushingins in all of the suspension parts. I havent't had any wheel hop at all. Boxing the lower arms will give it a noticeably tighter feel under wheel spin. Both of these fixes are relatively inexpensive and don't add the drawbacks of "add-on" suspension pieces for a frequent driver.
I also installed a quick ratio steering box from a third gen Firebird formula. It's a direct bolt on and works great. Check www.maliburacing.com for lots of G-body info.
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