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Author Topic:   Sway bar
Kid Rock
Dirt Roller

Total posts: 18
posted March 11, 2001 07:23 PM
I have a 79 grand prix. We run the IMCA G-80 tire on a 1/2 mile med bank track.All stock suspension mounting points,racing springs and shocks.We are thinking of runing one but would like to know what they do to car.

Kid Rock
Dirt Roller

Total posts: 18
posted March 11, 2001 07:28 PM
I was wondoring about the front sway bar

Rooster
Dirt Forum Racer

Total posts: 90
posted March 11, 2001 08:14 PM
That would be a G-60 IMCA tire, Good Question, I've not run a sway bar since just after you where born. Maybe someone can give you a good answer.

jammin
Dirt Administrator

Total posts: 3279
posted March 11, 2001 08:22 PM UIN: 16262997
I used to run one of these cars...I cut the front sway bar off...wanted to have independent suspension where the spring effects were known. If you do run one, the suspension is no longer independent and relies on the sway bar also as spring tension. In most dirt cars, you want to promote roll, a sway bar tends to decrease it....maybe fine for asphalt, but not on dirt.

my two cents.
jammin

Kid Rock
Dirt Roller

Total posts: 18
posted March 11, 2001 09:02 PM
Up here some of are mods are running them and it seems to be working. Would it change the spring rates.

Stonewall
Dirt Roller

Total posts: 20
posted March 12, 2001 09:21 AM UIN: 10024185
Jammin,

You said that in most dirt cars you want to promote chassis roll. Why is that?

...Stonewall

MOD RACER#93
Dirt Freak

Total posts: 251
posted March 12, 2001 07:33 PM
I ran a sway bar on my first s.stock for about 3 weeks... the bolt's that the guy had made so you could adjust the preload kept breaking(snapping). so i gave it up. havnt run one since. As for as the chassis roll is concerned, on dirt chassis roll creates side bite at the right side tires. this is nessecary on dirt. especially on dry slick tracks. move your weight up in the chassis on dry to help transfer weight to the right side on entry...on tacky keep it low...left. hope this helps...

jammin
Dirt Administrator

Total posts: 3279
posted March 12, 2001 07:41 PM UIN: 16262997
If you dont transfer at least some weight, you will be loose entering the turns.....The weight transfer will set the car for exit.

Kid Rock
Dirt Roller

Total posts: 18
posted March 12, 2001 09:19 PM
We are allowed to run wheel spacers and off-set wheels. How can I achieve a left rear bite with all stock mounting points.

owracer
Dirt Maniac

Total posts: 103
posted March 13, 2001 07:19 AM
Are you allowed to use weight jacks? You get your left rear bite by the amount of weight you jack into that corner. A stiffer spring is also needed on the left rear.

Kid Rock
Dirt Roller

Total posts: 18
posted March 13, 2001 01:44 PM
No, we are not allowed to run weight jacks.

MOD RACER#93
Dirt Freak

Total posts: 251
posted March 13, 2001 06:55 PM
no weight jack allowed is not that bad. if you run the 12 tall s. stock type racing springs in the front you can make shims to put on top of the rf. to add a little wedge. also you can make little spacers for the rear springs. run a stiffer lr spring, or put a spacer on top of this spring. run the rr about 25 to 50 lb. lighter. this way when you go into the corner, the lr will still be loaded because of the stiffer spring. also weight placement has alot to do with bite coming off. sticking the lr wheel out and bringing the rr in helps on dry. do the opposite for tacky. on my Lm.stock i run 3off on tha front. and a 3 or 4off on the rr. 3off or a spacer on the lr. no sway bar, front or rear. there just something else to go wrong or break. hope this helps... by tha way...love tha name, kid rock....

Kid Rock
Dirt Roller

Total posts: 18
posted March 16, 2001 06:51 PM
I ask about this because, our local tracks have sweping truns. To run well you must keep your momentem at a max.Just trying to find a good way of doing that. Any help would be great.

Rooster
Dirt Forum Racer

Total posts: 90
posted March 21, 2001 10:07 PM
I'm thinking we should leave the sway bar off for now, I think if the track seems to be staying really dry later on this summer we may put it on and see if it will help the car through the turns. Right now I think thats just one more thing that you don't need to worry about at this time, get some laps in and we'll see how your doing against the rest, then we'll now where to go....see ya tommorrow KidRock......RoosterRock

poboy2
Dirt Forum Racer

Total posts: 95
posted March 23, 2001 05:51 PM
ROOSTER!!! You had me convinced that it might work! Think that I will still try running a softer front set up with the bar. (Just for grins!)

Rooster
Dirt Forum Racer

Total posts: 90
posted March 23, 2001 09:09 PM
poboy2, I'm still thinking about it. It will only take a few minutes to set it up. I think right now We'll put the new driver out as is, then maybe......My thinking has been more for the modified on the soft front, but I think it just might work here too. Let me know what happens. Good Luck.

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