TOSTO RACING

iTrader: (37)

Hey guys getting ready for the US Nationals at Indy wondering if you guys could help me out. I know you guys lighten your cars up on here like crazy was wondering if anyone has had some hands on experience of what 170 pounds will slow a car down or pick it up if you took it out.I haven't meesed with weight all that much.

My thinking is I always run C/S which has min weight of 3245 11.35 index.
I was maybe gonna move up to D/S with a min weight of 3415 and an index of 11.50. If your not familiar with stock eliminator its how fast can you go under your index basically. Will 170 pounds slow the car down .17 or not thats my question. I'm thinking not because I can put it all in the trunk so it will help the hook too. Last year at Indy it took .744 under the index to get in I have not made it yet, they only take 128 cars, though my car has been .84 under in 1650 da weather my theory is if I go to D/S is there a couple of hundreths there maybe . My guess is I will only lose maybe .13 from 170 pounds just a guess who knows, if so that would put me farther under in D/S than C/S hard to explain hope you understand?? Hope you guys can share some weight experiences.

Thanks Tim

fuel

iTrader: (13)

my buddy still has your pinks race on dvr and still watches it to this day........his favorite one.

Gary Z

Ouch! 170 is a lot but you won't know until you do the experiment. If you are sure you can't compete in C/S you may as well give D/S a try. Good luck.

427

iTrader: (3)

The weight alone should be a push in et. If your car does not work perfect in "C" then adding the weight could help you change to a better balance.........
Indy is a tough crowd. How many cars would be in class?

Kurt

TOSTO RACING

iTrader: (37)

Hey Thanks

TOSTO RACING

iTrader: (37)

The car works decent in C ,but not always perfect I'm thinking in D it will work all the time there fore maybe helping the et, it is gonna be tough to get in usually 3-4 cars in the same class for class runoff. My main concern is just trying to qaulify its gonna be tough. Was thinking 170 pounds wouldn't be the full .17 but more like .13 but just dont have the time to try it with no track here anymore. I've gone fast enough to get in ,but the weather there usually isn't the best. Just trying to go there with the best combo I got lol.

INTENESS

iTrader: (4)

That pinks show with your car was the best one man your car left like a bat out of hell.Hope to one day see the car in person goodluck to ya.

STOCK1090

iTrader: (1)

All depends if your gearing is optimized for C. I would not make the change unless you have run it at D weight.


Ice the crap out of it, put in the right oil and give it a shot.

tektrans

iTrader: (23)

I think the 170lbs will cost you little better than .15 and putting all the weight in the rear will surely require some suspension tweaking and you may not be able to keep that nose down.
If it's gonna work you'll need a track day to work it out.
I've seen that Pinks episode-your car looked great!

DrkPhx

iTrader: (15)

Did you try this calculator? It works pretty good for sprung weight.

http://www.wallaceracing.com/wt-correction-et.php

TOSTO RACING

iTrader: (37)

Thanks for all the replies.

Was wondering if anyone has actually lost say 100 pounds(or any weight actually) and ran the car the same day or same da and what they saw in et diff. Just trying to get a better idea on a mid 10 car at 3400 pounds.



Thanks

lemons12

iTrader: (71)

120# is roughly .1 at those ETs. Your guess of .13 sounds right on to me.

This is talking of two different cars from my experience, one slightly heavier and one slightly lighter... Both running bottom-low 11s.

DietCoke

iTrader: (18)

Stick a fat guy in your car, or run with a 170lb passenger if they'll let you. Easy way to get your answer

GIZMO

iTrader: (8)

JL ws-6

iTrader: (50)

I don't think I have ever taken that much out at a track day, but I know we've pulled about 75 out, and saw a car pick up .06 worth and about .5 mph. We ripped the seat and a couple other quck things off in about 15 min @ the end of the day.. car never cooled off, track was closing in 1/2 an hour and we wanted one more shot.

This was with an 11 second car. Usually we do thist type of thing at home.. but we were really trying to get that 10.99 slip.

170 lbs, I don't know with that. But if you have the ability to put it anywhere, and have a day to play with ballast location, then I think you could make it work.

Gearing would be the one thing I think may need adjustment. if you're on a 4.30 you may need the 4.56, or 4.71 from a 4.56 or whatever you're running

170 lbs, I think you will see

TOSTO RACING

iTrader: (37)

Cool thanks its looking like every 100 pounds is .06 to .07 I think I might try D I'll let ya know how it goes.