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Author Topic:   Air Pressure
#7_Dummy
Dirt Roller

Total posts: 9
posted January 25, 2005 07:43 PM  
I would like to hear some comments on what changes in air pressure cause what effects. Thanks maybe I can learn somthing new before this year gets started.

way2fast
Dirt Maniac

Total posts: 104
posted January 25, 2005 08:04 PM  
RF:increase would make the care tighter

way2fast
Dirt Maniac

Total posts: 104
posted January 25, 2005 08:08 PM  
RF:increase would tighter
RR:increase would Loosen
LF:increase would loosen
LR:increase would tighten

RF:decrease would loosen
RR:decrease would tighten
LF:decrease would tighten
LR:decrease would loosen

Dodgemaster
Dirt Newbie

Total posts: 3
posted January 25, 2005 08:14 PM  
Are these psi spec's for RWD ? If so, how about FWD..?

Thanks..

#7_Dummy
Dirt Roller

Total posts: 9
posted January 26, 2005 04:05 PM  
I dont know anything about FWD but I know that those changes are what I had in my mind and I know thats for RWD but I dont know if they change for FWD or not.

racer30
Dirt Roller

Total posts: 20
posted January 26, 2005 06:11 PM  
I don't adjust with tire pressure. I do try to anticipate track conditions and set my pressures. I adjust with wheel back space to tighten or loosen . we have a pressure we start with then check temp after runnin some laps usually we stay within a pound or two of that all nite.

#7_Dummy
Dirt Roller

Total posts: 9
posted January 26, 2005 07:13 PM  
Yeah well we adjust probably as much as 3 or 4 psi maybe were doing it wrong?

Dodgemaster
Dirt Newbie

Total posts: 3
posted January 26, 2005 07:58 PM  
I am building a Neon (almost done)..pics in picture thread....
havent done any testing yet and thus havent developed any psi specs. Just curious if anyone has some FWD notes they are willing to share.

Shawn P Martin
Dirt Full Roller

Total posts: 33
posted January 26, 2005 09:21 PM  
#7,
Try 17lbs.LF
18lbs.RF
12lbs.LR
18lbs.RR
This is for FWD cars. I got specs. from 1999 North Texas Mini-stock Champion. He also finished 6th in points at GPS in 2004.
Sounds like he Knows front wheel racing. Am told that FWD will dominate on a dryslick track. Start with that Pressure and lower or add 2lbs. at a time to see if it pushes or pulls.
Good Luck(Spazz)ShawnMartin

Shawn P Martin
Dirt Full Roller

Total posts: 33
posted January 26, 2005 09:32 PM  
Hey DodgeMaster,
Wouldn't or shouldn't you have made that the 19 car MountainDew Mayfield, not Kayne.LOL I am a Mayfield Fan but Kassey is cool too. Just thaught you should do the dew. Good luck with FWD(real good on dryslick) hug that inside corner. Also never hit any one with your foot in the trottle. That is the biggest chance to break someting in the drive train. Run like the wind little Brother.
Shawn(Spazz)

racer30
Dirt Roller

Total posts: 20
posted January 27, 2005 05:45 AM  
if you are loose move the R/R up under the car that will tighten it up do the opposite if you are tight try it sometime see if it helps. you still need to adjust with air pressure we try not to move more than a pound or two . hope this helps

racerman707
Dirt Freak

Total posts: 374
posted January 30, 2005 04:07 PM  
Changing tire pressures will afect the spring rate on the car. Adding to the right front will usually make the car tighter. HOWEVER if the air pressures are too low for a particular tire, it could be rolling under. If the rf tire doesn't have enough pressure it could roll under and run on the sidewall in the corners making the car push. So going up on pressure will keep the tire from rolling under and run on the tread instead of the sidewall which could take out a push. Maybe I didn't confuse anybody.

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