Elevation?

[evil281]

how much does elevation effect you 1/4 mile time??

Where i race its 3000 above sea level and it was about 95 degrees out this friday when i raced also was humid too cause a storm had passed by not sure how much humidity, anyway want to know how much elevation can effect my time

 

[Stan Weiss]

The question is how much does altitude effect your HP output. Based On 3000 feet 95 degrees 85% Humidity I would say you are losing about 22% of your HP compared to 0 feet 60 degrees and 0% humidity

 

[evil281]

The question is how much does altitude effect your HP output. Based On 3000 feet 95 degrees 85% Humidity I would say you are losing about 22% of your HP compared to 0 feet 60 degrees and 0% humidity

wow thats nice to know for sure, now i dont feel that bad about running a 14.2sec 1/4 mile

 

[blacksheep-1]

this guy is a bit of a whacko, but his HP calculators are pretty useful

Engine Tuning Calculator - dew point

 

[ScortLX]

Evil281....up here in Denver, my car as well as my buddies (within 5 of your hp/tq numbers) run anywhere between 14.8-15.2 depending on if its a good run or not. I'd take 14.2 any day!

 

[evil281]

Evil281....up here in Denver, my car as well as my buddies (within 5 of your hp/tq numbers) run anywhere between 14.8-15.2 depending on if its a good run or not. I'd take 14.2 any day!

sweet i thought i was sucking it up cause i see all these people get in 13's with same power or sometimes less than mine, thought i was an idiot

 

[04GTMustang]

by being higher in elevation there is less oxygen in the air and will make less hp causing the slower times.

 

[myponyrocks]

I know at the track in Denver (around 5k above sea level, and some really nasty DAs sometimes above 10k) an N/A car will run about 1 second slower.

My corrected Dyno numbers N/A were 265/310 or something, uncorrected it was 210/260 or something similar.

Supercharged cars you lose about 2lbs of boost between CO and sea level. So it's harder to gauge as the dyno doesn't SAE correct for boost. I was getting 6lbs and 360/360 corrected, here in England now I'm getting almost 9lbs and I'd guess I'm a lot closer to if not over 400 at the wheels.

Turbo cars still suffer, but not as bad. I think it's around 5 10ths or so for cars over 400 rwhp the smaller turbos maybe a full second.

I'll have track times this weekend if it doesn't rain so I'll know what the car is running in the 1/4 at 100 feet above sea level vs 5k+

 

[ScortLX]

Hows England Greg? Let us know how the beast does!

Nate

 

[evil281]

let us know what you run