When I rev the engine and spin the tires on wet pavement or dirt the wheels bounce...why is that?

 

like when you mean bounce you mean like your wheels are hopping right? if so you might want to lower the pressure on your tires and then rev higher.

 

I think it means your shocks are shot, so they do not hold the wheel firm. Try pushing down on your car over each wheel and see how it bounces. Maybe you have one of the cheap aftermarket shocks? I know they bounce alot.

 

what your experiancing is wheel hop. is your car stock? heavy wheels and/or poorly dampened shocks can be the cause of your wheel hop. harder suspension and engine mount bushings can help, so can a stiffer suspension.

 

I had the same problem. I just got new tries and now it doesn't bounce anymore.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Terabass &raquo;</TD></TR><TR><TD CLASS="quote">When I rev the engine and spin the tires on wet pavement or dirt the wheels bounce...why is that? </TD></TR></TABLE>

b/c you're a waste!!!!!!!

 

Yes, like all the others have stated, you are experiencing wheel hop. To lower the amount of wheel hop a torque damper, motor mount inserts, better struts/springs and good tires will reduce it signifigantly.

And dumping the clutch and roasting the tires isnt a good idea unless your heating them up for a drag launch or just wanna waste the precious thread on your rubbers..

-Eric

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jimjonez &raquo;</TD></TR><TR><TD CLASS="quote">

b/c you're a waste!!!!!!!</TD></TR></TABLE>

Your a waste, dont post if you dont have something constructive to add.

To the OP, I hear that ladder bars on the subframe and an engine torque damper will help greatly. Also, try revving a lil higher before you dump and it may be smoother.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Alpinestar03 &raquo;</TD></TR><TR><TD CLASS="quote">
And dumping the clutch and roasting the tires isnt a good idea unless your heating them up for a drag launch or just wanna waste the precious thread on your rubbers..

-Eric</TD></TR></TABLE>

burning out to heat up street tires will make them hard and brittle and even less grippy. even a couple seconds will sky rocket the tires temp beyond its optimal temp range. a better way to get them up to temp is do a couple conservative passes first.

 

Hmm..I didnt know that..

How does it make tham brittle and hard?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Alpinestar03 &raquo;</TD></TR><TR><TD CLASS="quote">Hmm..I didnt know that..

How does it make tham brittle and hard? </TD></TR></TABLE>

im no rubber expert or engineer but its just what i have read. the rubber compound in tires is similiar to gum. when you quickly pull at a piece of chewed gum it snaps in two. pull at it slowly and it stretches. and summer performance tires are only good upto i think about 180 degrees. a burnout will shoot its temp above 200. im pretty sure if you ask some experianced racers in the drag racing forum they will say the same thing.

 

I got new shocks by Monroe, maybe got 15,000 miles on them, I use stock springs.
Along w/ shocks I replaced the rubber bushings on top of the shocks.

I also recently got new tires for the car- Bridgestone Potenza. They seem pretty good.

I would figure what is left is the engine mount as the car makes a wierd cluck sound when I go on wavy roads (not hard dents) seems like the engine is rocking back and forth, but the sound dissapears over 60 mph.

So I am going to guess i might need new engine mounts?
Whatcha guys say?

 

bump

plz help out

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jimjonez &raquo;</TD></TR><TR><TD CLASS="quote">

b/c you're a waste!!!!!!!</TD></TR></TABLE> What a dick.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pos_cd5 &raquo;</TD></TR><TR><TD CLASS="quote">

im no rubber expert or engineer but its just what i have read. the rubber compound in tires is similiar to gum. when you quickly pull at a piece of chewed gum it snaps in two. pull at it slowly and it stretches. and summer performance tires are only good upto i think about 180 degrees. a burnout will shoot its temp above 200. im pretty sure if you ask some experianced racers in the drag racing forum they will say the same thing.</TD></TR></TABLE>

Yeah I think that was in SCC magazine a couple months back

 

no poitn in doing a burn out on street tires. at the track i go around the water box with street tires on, and just spin the tires really quickly before i pull up to the lane. not sure if it helps but this way any crap thats stuck on the tires from driving to the staging lane is scrubbed off. probably dont even need to do that either, but it cant hurt

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by typhoon &raquo;</TD></TR><TR><TD CLASS="quote">

Yeah I think that was in SCC magazine a couple months back</TD></TR></TABLE>

lol yup, thats where i read it fron. it was really informing article

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Eddiebx &raquo;</TD></TR><TR><TD CLASS="quote"> probably dont even need to do that either, but it cant hurt</TD></TR></TABLE>

it does hurt!

 

Problem solved, transaxle was broken, / bearings were out..which caused the to bounce since it was looose..