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Author Topic:   monte carlo handling
smsm
Dirt Roller

Total posts: 8
posted September 03, 2004 07:10 PM  
we run a 85 mc on a 1/2 mile high banked dirt track.the motors are making about 500 hp.our car has 1000lf 1200rf 200lr 175rr.we run 53rear,51.5left,53dia, and about 140lbs lr bite,wo driver.we run 8" ar tires on 8" wheels.wheel offsets are 4lf,2rf,4lr,4rr.the car is good on a tacky track.as the night goes on when the track gets drier the car wants to slide up the track gettin in,it still has good bite off,when the track is dry what changes should we make?air pressure?offsets?bite?springs?the car won 10 races last year but this year it is a little off.any help would be greatly appreciated

ryan
Dirt Forum Champ
Total posts: 776
posted September 03, 2004 10:21 PM  
Basically same setup as you and had the same problem earlier in the year. Take a chunk of lead and mount it up high on the right side or you could take some of your lead on the left and move it to the right. Worked for me anyways. You might want to check out your brakes could make you loose on entry also.

turnleft43
Dirt Full Roller

Total posts: 38
posted September 03, 2004 11:16 PM  
SMSM, personally one thing i would do is try and make the left front offset into a three inch. Either by changing the wheel or use a one inch spacer. A wider front track helps tighen up the car. Also take the left rear out at least another inchor two. this will help put more weight on that corner. The rear springs your using are what we had but i bumped them both up about 25 pounds to keep the car from rolling over so much. On a high banked track your getting alot of down force thru the curves. JMO

cd2
Dirt Maniac

Total posts: 161
posted September 04, 2004 06:34 AM  
smsm,if the car is sliding sideways,no push or loose just sideways raise some weight up heigher.This will give more side bite.If you have a piece of lead that weighs about 30-35 # an can put it about chest high just to your right & behind you this will help,also raise another one up about half as high.Do this after the heat race. cd2

smsm
Dirt Roller

Total posts: 8
posted September 06, 2004 02:17 PM  
i have been reading and was wondering if this was right.if i lower the bottom trailing arm mounts on the rearend it will help.i have them in top hole now and have two holes lower that i could use.new to metric cars just looking for tricks.will this create more bite off corner or not ?i was also going to raise the weight up and get off the leftside some more.is 175 ibs of bite with the driver too much?some say you can have too much and will make car loose?thanks for all replies.just tryin to learn

cd2
Dirt Maniac

Total posts: 161
posted September 06, 2004 07:30 PM  
smsm,if you are saying that you have two more holes in the bracket on the rearend so you can lower the back of the arm this will help.Lower the R.R. one hole & the L.R. two holes,if you have any adjustments on the arms set the rear square in the car until you see how it reacts to the trailing arm change.This change might try to loosen entry a little but it will give more bite off the corner.On the weight leave it as is for tacky & when the track goes dry raise some weight up about chest high if you have a place to mount it.This will help with side bite on the dry.Don't seewhere you posted you total weight or your wheel weights this would help if posted.If you make the changes & the car gets better bite off the corner & loosens to much on entry just post back & i will tell you how to tighten entry back up with out effecting exit.The wheel weights with driver in car will help a lot . cd2

Mikey14
Dirt Freak

Total posts: 265
posted September 06, 2004 09:26 PM  
lower air pressure will change a ton. Can you run a bead lock on the right rear? If so what is your pressure on a dry slick track? from tacky to dry slick we move the right rear out one inch and drop one pound of pressure for our setup.

Are you running flat out on entry? can you burp it a bit and see if it sets up differently? I found that if I burp it just a bit on entry when we are in a single file, dry slick race I am able to get on the throttle a lot earlier on exit.

We also run a big 1/2 mile. I wouldn't say its a high bank but its a bigger track. Most guys run a 5.43 gear if that tells you anything with AR tires. Similar springs as to you as well.

I'd play with air pressure.

smsm
Dirt Roller

Total posts: 8
posted September 08, 2004 06:00 PM  
our weight is 3200 lbs.lf-788,rf-765,lr-951,rr-759.leftside-53.2,rear52.4,52.5 cross,192 bite,air pressure is lf-11,rf14,lr11,12rr.that is a little more bite than normal.our rr is always hotter than lr.we run a 5.83 gear.we turn about 7600.the rearend is sitting rightside shorter about 5/16.i moved a piece of weight this week and that took a little rear out.does grooving the tires help sidebite?does anybody x-brace thier cars under the floorpan?we do.we have the rear bushings drilled with the small holes.i was thinking about a 900lf 1100 rf and 225lr 175r.thanks for the help.i have been looking for a place to talk about these cars.thanks

cd2
Dirt Maniac

Total posts: 161
posted September 08, 2004 08:01 PM  
smsm,check your private messages. cd2

bobaluuu
Dirt Freak

Total posts: 474
posted September 09, 2004 07:44 PM  
mikey, one of us is wrong I think. tacky to dry transitions would call for moving the right rear under the car more and the left rear out, or so Im told. also moving the rf out a little would help on a dry slick, again this is as I've been told. If Im wrong then someone please tell me because we are using this proceedure for our car. thanks bob.

bobaluuu
Dirt Freak

Total posts: 474
posted September 09, 2004 07:45 PM  
sorry, message doubled.

[This message has been edited by bobaluuu (edited September 09, 2004).]

cd2
Dirt Maniac

Total posts: 161
posted September 09, 2004 08:44 PM  
bobaluuu,you are right as rain. Probley get at least half a dozen on no that is wrong, but keep on doing it the right way. cd2

bobaluuu
Dirt Freak

Total posts: 474
posted September 09, 2004 10:37 PM  
cd2 where are you at in my former home(Peach) state ?

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Light it up, Baby!

smittye7
Dirt Newbie

Total posts: 1
posted October 06, 2004 02:41 PM  
with the rf higher in tire pessure and the rr hotter than **** ....the car is pushing due to the high cross weight and the rr is hotter than **** due to not having any bite, having a 175lbs of bite is way to much, you want it somewhere around 75-120 depending how the car handles....decrease cross weight and decrease bite is the key in this situation,but doing what I just talked about should make it handle like a dream!!!!!!

Blind Barney
Dirt Maniac

Total posts: 120
posted October 09, 2004 09:31 PM  
smittye7, I am new to dirt racing. What is "175 lbs of bite?". Is it the difference betwenn RR and LR weight?

    

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