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Author Topic:   How do i adjust the crossweight without weight jacks
CrazyT
Dirt Forum Racer

Total posts: 79
posted August 02, 2003 01:22 AM  
I have 79 monte and the LF is 1076 and the RF is at 730 when i pull it on the scales. I run a 1400lb spring in the rf and 1250 in the lf. I don't understank why the lf has so much weight on it. lr has 811 and rr is at 860 and just don't get why this car is doing that. with only about 45 % cross the **** thing pushes really bad.

Please help i am new at this.
Also i am running the stiff springs because the car was boucing the front end off the ground, but now it stays down and drives better. It is a high banked dry slick track

Eljojo
Dirt Forum Champ
Total posts: 968
posted August 02, 2003 07:50 AM  
CrazyT, You got to get back to basics,bud. Your car is way wacked out! The reason your pushing is that you're basicly driving off the left front...which should be doing less work than the right.
Get in the shop and set your ride heights. Use shims (either adjustable or stacked spacers) and get your ride heights within tolerances. Then set air pressures, weights, fuel, and driver in a race ready form and scale it.

racer17j
Dirt Forum Champ
Total posts: 5390
posted August 02, 2003 09:57 AM  
I have gutted everything i can but i haven't had it back on the scales since i took an extra 80lbs off the front end. Also my front springs were 900lf and 1000rf and it bounced bad. Then i went to a 1000lf and 1250rf and it still bounced but not as bad then i went with 1400 rf and 1250 lf and it doesn't bounce much. My ride heights are lf 7.25 rf 6.75 lr 7.5 rr 8.00

x factor
Dirt Full Roller

Total posts: 34
posted August 03, 2003 07:19 AM  
If you have different tire sizes to play with try putting your tallest tire on the rt front and smallest on the left front. By messuring the tires circumfrence I have run as much as 7 inches difference across the front. The rears I have always kept under 2inches of positive stagger (rt side larger) for wet heavy track to as much as 3 1/2 inches of reverse stagger for dryslick. I should also add that I don't uses spacers of any kind. Just found it easier to change the wedge in the car with tires which are used and most of the time free for me.

rico 08
Dirt Forum Champ
Total posts: 1139
posted August 03, 2003 09:10 AM  
I see your problem,the left front is higher than the right,i'd raise the right front.

CrazyT
Dirt Forum Racer

Total posts: 79
posted August 03, 2003 05:25 PM  
I have to run g60 american racers so changing tire size is not an option.

CrazyT
Dirt Forum Racer

Total posts: 79
posted August 03, 2003 05:27 PM  
Will changing the ride heights really affect the car that much?

racer17j
Dirt Forum Champ
Total posts: 5390
posted August 03, 2003 05:54 PM  
Ok that makes sense, so i need to raise the RF and the LR to increase the crossweight, or possibly lower the RR.

racer17j
Dirt Forum Champ
Total posts: 5390
posted August 03, 2003 07:11 PM  
Looks like these guys have got you on the right track. I'd leave the left front where it's at and build a 1 inch shim to put over the right front spring. As far as spring rates go, I like a very heavy front spring, but the tracks I generally run are very high banked and usually rough as a corn field----but bad fast. 4/10th qualified at 17.02 last night 16.28 on a 3/8th Set those ride heights with about an inch of rake from left to right and about another inch from front to rear. Good luck and keep us posted!

CrazyT
Dirt Forum Racer

Total posts: 79
posted August 03, 2003 09:13 PM  
Thanks guys i guess i better get to work, i will let you know how things work out.

Raz_900
Dirt Forum Champ
Total posts: 635
posted August 04, 2003 10:10 AM  
Where do you have the battery located? Is it where the heater box used to be? If the batteries on the left front, just moving it to the right side where the heater box was could make about a 80-100 lb change (40 lb lighter on lf and 40 heavier on rf.) Also, are you using a sway bar? There's a guy at my track that runs those same springs without a sway bar. We run 1100 rf and 1000 lf with a sway bar.

And if the car is reall 3475 lb, start looking for added weight if you bought the car used. That's REALLY heavy for a metric car even with driver. Mine's 3250 with me and 150lb of added weight in the trunk.

YAZ
Dirt Maniac

Total posts: 147
posted August 04, 2003 08:29 PM  
just to add one other thing to look at.
I developed a push and it took three
weeks to find it. my rf became lower
than the lf. I found that the lower control
arm on the right side was bowed, and I
have never been hit there. Must of been
from the very rough track. I put a new one
on and the ride hight was back and the
push went away. You have to compare two
lower control arms, because you cant tell
by eye balling it.

CrazyT
Dirt Forum Racer

Total posts: 79
posted August 05, 2003 01:26 AM  
Ok here are my ride heights now LF 7 RF7.5 LR 7.75 RR 8.25 all i did was put a spacer in the RR and they changed dramatically. Also i tryed the jack and socket method and my LR came off the ground 3in before the RR came off the floor. Do i take the RF up more, or raise the LR and drop RR.

maniac motors
Dirt Maniac

Total posts: 128
posted August 05, 2003 01:08 PM  
jack and socket method should make right rear cme off more than left rear.the way you have it now just lowers cross and probably raised the weight carried on your left front.
tryto get your lower ctrl arms in the rear close to level if you can aor right rear up a c.h. (just a little)

uforacing51
Dirt Forum Champ
Total posts: 570
posted August 05, 2003 02:17 PM  
The jack and socket method worked pretty good for me. Stick with what is working for you. Make your changes a few at a time because if you make a whole bunch, you won't know what fixed it when it starts working. It is a painfully slow way of adjusting the car to obtain max performance, but in the end it will make you faster and smarter because you will know what fixed it.
Also, maybe have a specailist look at your frame, you may have a sprung or bent frame.

[This message has been edited by uforacing51 (edited August 05, 2003).]

Eljojo
Dirt Forum Champ
Total posts: 968
posted August 05, 2003 03:49 PM  
Remember, the jack and socket method will only work if you're placing it in the canter of the rear wheels. Lots of Ford nine inchers have the pumpkin offset from the center. Maniac motors is probably right about yur cross--which will make you very loose. Put a shim on top of th right front and see where you're at.

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