Im curious if anyone has raced at both high and low elevation strips. The drag stip I race at is about 3000 ft. Pretty high! A couple weeks ago when I was there this full race civic showed up, he said that he ran a 7.5 in the 1/8 at his track (5 ft. above sea) and at my track he ran a best of 8.3 in the 1/8. Does this mean its possible for me to run .8 faster at a lower elevation?

 

I've always heard you lose 2mph per 1000 feet above sea level, but i'm not sure how true that is. its due to the fact that the denser air creates more horsepower.

 

there is a calculator "somewhere" on the net that will correct your times for altitute.

 

Which says roughly .1 seconds per 1000 feet of elevation...but I could be wrong about that.
Austin

 

Here's one:
http://gnttype.org/techarea/misc/altitude.html

 

does temp affects on drag racing too?

 

yup.....im at 2600ft and if i run at sea level it will knock .5 sec off my time. so u will defenitly be faster at sea level
manny

 

The reason for the higher time at higher elevation is the lower level of OXYGEN. Thats why its slightly harder to breath in the mountains. While the amount of air drawn in remains the same, the percentage of the OXYGEN needed for combustion is diminished. So this results in a lean air/fuel mixture. Anything car you run up high, will run quicker down low.

 

so if I ran a 14.9 in Tucson, what would that be on sea level? I don't know how high tucson is above sea level though. Thanks, I felt kindda better now. I was disappointed when I ran my car with this time. I was hoping to get to low 14's.

 

Archie, Your time of 14.9 here in Tucson is very respectable. Everyone here battles against 3100ft elevation as well. I am glad to hear you made it in the 14's. Make sure you tell collectiveracing.net your time so they can keep track for you.
Also remember your car isn't fully tuned yet.

Yes, I personally have seen .8 sec faster times at sea level than 3100ft.

 

wadya think the reason that houston track has more records being broken than any other tracks.. ?

 

you are right Scott, I need to get my car tuned really good and hopefully i can drop down my times. THanks man for helping me out on my car.

 

Hey sleeperhatch,
Assuming your track is at 3100 feet above sea level, a 14.900 would be about 14.344 at sea level.
The correction factor was .9627
@3100 ft. corrected e.t. = your e.t. * .9627
corrected mph = your mph * 1.0395
Pretty good!