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Author Topic:   Loose Off
hsracer158
Dirt Full Roller

Total posts: 33
posted April 23, 2005 07:22 PM  
Bear with me I will give all the info I can think of. So this post may be kind of long. My car was a tick loose coming off the corner in 4 last night. 1&2 car was great stuck to the bottom great power coming off. Here is the relative info. The track is a 3/8 mile med banked oval. The car is a 3200# street stock. We run a final gear of 6.26, turn approx 6,000 rpm's. The set up is as follows. RF is a 2" bs, with a 235 70 15 cooper cobra at 32# AP. 1100 spring. LF is a 3" bs with a 225 cooper cobra at 17# AP. 900# spring. RR is a 2" bs, with a 235 70 15 cooper cobra, at 16# AP. 100# spring. LR is a 3" bs, with a 235 70 15 cooper cobra, at 16# AP. 225# spring. We run 1 1/8" front sway bar with even links. Also run a monte ss rear sway bar. The car has street stock bilstein shocks all around. It is a metric car ( forgot to mention that ). The car was very fast led all night. But in 4 it was a tick loose, The track was tacky at the time, but I am afraid that when we get the track later it is usually dry it may be very loose. My question is how can I thighten the car up with out changing to much, and also, I prefer to run the bottom , although the car works well all over. Should I change my line in 4, Likely this will create more whell spin. My cross is 57% and rear weight is 46% If I am missing anyhting fill me in and I will relate info. I am kinda stumped. We tried flopping rear wheels, and that seemed to make it a little worse. Thanks for bearing with me

sdracer82b
Dirt Full Roller

Total posts: 32
posted April 23, 2005 07:38 PM  
Is that spring rate on the rr really 100 and i dont know about the 2 off on rr i think with that rear spring like that it will stay over on rr to long if that is really the spring you are running

hsracer158
Dirt Full Roller

Total posts: 33
posted April 23, 2005 07:41 PM  
Yes I know it sounds funky but that is really the RR rate.

racer17j
Dirt Forum Champ
Total posts: 5390
posted April 23, 2005 08:58 PM  
First off we have some tough rules. We can't add weight, we have to run stock sheet metal, and that means all inners. Second we are on 7 inch rims with a max size of 235's, and have to be dot's. I have tried stiffer rear springs, on either side. I have flopped offsets. Also, I have tried no rear sway bar, and a smaller front sway bar. As I stated, this is the best my car has run so far, we have tried with less cross weight, but the more cross I put in the car the better it handles. I am afraid if I go to stiff in the rf, it will make the car push, and i finally got rid of that problem. Any other ideas would be greatly appreciated.
Thanks

racer17j
Dirt Forum Champ
Total posts: 5390
posted April 24, 2005 08:31 PM  
i have the same rules except you can run alot wider tire then i can. do some searches and you will see that 95% of us are in the same basic area 11 or 1200rf,9-11 lf,2-300lr and 250-175rr. and scale wise 50-53 rear 50-53 left and 48-51 cross. with your 57%cross and 46 rear the rr is not getting any bite feal your rr tire next time after the feature and i'm willing to bet it will be luke warm and your rf and lr will burn your hand. sway bars are for asphalt and bind the suspention you need alot more travle on a bumpy dirt track then you do with a smooth asphalt one.here is what i would suggest try it if you want to but i'm willing to bet you'll be alot happier with the results
1100 2 in bs rf,900,2in bs lf,225 3 in bslr,200rr 4 in bs leave the pressure where they are at and no sway bars

    

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