Anybody else have problems with wheelhop on dry pavement? I have an 02 Z06, lgm longtubes, Halltech Trap, 04 shocks, and the stock Supercar tires. I get wheelhop in first and second gear if I'm not real careful with feathering the throttle. Can tire pressures cause this, or? I'm running 38 psi on the street.

Jason
ps I did a search, and wheel hop topics show up, but the posting doesn't pull up. So here I am.


[Modified by JasonsZ06, 3:13 PM 1/31/2004]

 

Mine does it in the cold.

 

:withstupid: And no traction in the cold :(

 

:withstupid: First time it happened at 8 degrees outside. Scared me to death, thought I broke my baby.

 

I get it sometimes at the track! :nonod: :smash: :thumbs:

 

Mine wheelhops all the time, any time in any kind of weather if I spin the tires (Kumhos). Before with the runflats, it only wheel hopped on certain types of pavement.

I see no satisfactory street solution except getting sticky enough tires so than they do not spin, and hence no hopping either.

 

Turn off the traction control. I get hop when I spin the wheels with TC on, but not problems with TC off. I guess the TC system senses the loss of traction and attempts to adjust for it.

 

My traction control IS OFF with all the situations I gave in my previous post. My wheel hop is Not caused by traction control being on. I mean thanks for trying to help but that is not the solution.

 

I just put a 750lb rear drag spring on mine and it really nails the tires to the ground, Roger or Joe Vinci can hook you up with one 407-292-4500, you want believe the diff it makes, there is also a 1000lb front spring available for road race type guys and a much lighter front spring for even better weight transfer for the drag guys.

 

I've heard that the wheel hop ( I have it ) is caused by the shocks. I hear that helps, but you already have '04s.

 

I also have sig. wheel hop in my 03 z06 on the street in 1st and 2nd and my Z06 is a full bolt on car with 4.10 gears and running stock supercare tires. Hoping a softer rubber compound like found on the bfg kds may help my situation out but not sure if it will! :confused: :chevy What do you guys recommend for a zo6 with wheel hop on the street?


[Modified by MTI 427 Roadster, 3:15 PM 2/1/2004]

 

I have the traction control set on Competition, so that shouldn't be the problem. It doesn't always wheelhop, but when it does, it sucks. I'm wondering if that 1000 lb rear spring would help, or make it worse. Doing the search function on wheelhop, it appears that was a popular question, but unfortunately, the contents of the postings won't pull up. So hopefully whoever has figured out a solution to this will post here.

Thanks,
Jason

 

A stiffer spring or coil overs is pretty much the only thing that could try to stop it. Changing tires would only stop it for a little while until they get a little wear in them.

 

I wonder if the shocks have anything to do with it? I talked to a local guy who stated that they were having problems with wheelhop, so they played with the adjustments on the Penske adjustable shocks, which seemed to help. I'd like to stick with my 04 shocks though. Do the rest of you just live with axle hop, or is there another solution?

 

Ahh, wheel hop, being a former FWD import driver we had problems with wheel hop all the time, even worse if you didnt have an open differential. Usually the reason is because of the amount of joints there is in the suspension. With the independent rear, theres alot more 'slop' then with a solid axle. Fortunately, it isnt as bad with this car as a FWD since the wheels do not turn.

To combat hop some would use stiffer motor/tranny mounts and/or poly suspension bushings. This may or may not help... but the real solution would be to use custom made bars that would tie the lower control arms to the frame of the car. These bars would allow the up/down articulation but not the forward/back movement
http://www.overboost.com/story.asp?id=460 was a good article about it. However now looks like they charge to read the entire thing, but the first page should give you an idea of what it looks liket.

I thought I left wheel hop behind with FWD but this car does it too. However I only have hop when its cold out. I can still do prolongued huge burnouts if I desire and so far at the drag strip no problems, so I'm not going to let it bother me. However if somebody can fab those "radius bars' for our car I'd be willing to buy.

Stiffer shocks /springs probably wont do much as much of the moment is forwards/backwards. I'd like to hear what somebody with poly control arm bushings has to say about this...


[Modified by eRiCdWoNg, 4:47 PM 2/1/2004]

 

I hadn't thought about that, but maybe switching the durometer of the rear control arm bushings would help. They are somewhat flexible, and would allow some windup in the suspension.


[Modified by JasonsZ06, 1:54 PM 2/1/2004]

 

First, one of the keys to max acceleration is keeping the tires hooked. If you apply the throttle too fast, the tires will spin and once they do that freely, hop can follow. I can make mine hop on stock tires if I try. But I have learned to squeeze the go-peddle rather than stomping it. As a consequence I rarely get hop and my times have improved. So I really think the key is learning to drive around the issue rather than modding the suspension and compromising its balanced handling.

Second, I'd suggest dropping your F1SC tire pressure back to stock (30 psi cold) on the street. Doing only that will certainly reduce the onset of hop.

Finally, if you search the Z06 board "archive" for "wheel hop" you will find a lot of good threads that explore various approaches to eliminating the problem.

Ranger

 

Some of you guys who have digital video cameras may be able to mount the camera under the car and record the car wheel hopping. This would allow you to see if a specific component or a combination of components are contributing to the problem. Hell,, you might even be able to invent something to solve the problem and become an instant milloinaire! :thumbs:

Someone on the forum said a stiffer sway bar might help. NOT! Got a stiffer bar and aluminum end links and still have hop. I found out that if you shock the drive line to do a burn out it hops a LOT more than if you preload the drive line by letting the clutch out until you feel it start grab and then give it HELL.

I use the preload method and have reduced the hop to the point that I dont worry mych about it any more.

Bill C

 

"Finally, if you search the Z06 board "archive" for "wheel hop" you will find a lot of good threads that explore various approaches to eliminating the problem."

Ranger

As I stated in my original posting, I did do the search function for wheel hop, and it did return many topic headings for wheel hop, but when you attempt to open them, there is nothing there. As somebody else stated, the search function doesn't seem to be working correctly. Thanks for all the replys so far, I'll try dropping my tire pressures down to 30 and see what happens.

Jason

 

Right now even rolling into the throttle results in hop. As the revs climb over 3000 it starts to hop like mad. Then shifting into second it hops like a raped rabbit. It happens much worse in the cold and on concrete. If it still happens when it gets warm again I'll worry.