WHAT IS THE BEST OUTSIDE TEMP FOR MAXIMUM PERFORMANCE ?
Thread Starter
Pro
Joined: Apr 2003
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From: Antioch Calif.
WHAT IS THE BEST OUTSIDE TEMP FOR MAXIMUM PERFORMANCE ?
My Vette seems to feel alot stronger in much cooler temps. How about Yours?
:chevy :chevy :chevy :chevy :chevy :chevy :chevy :chevy :chevy
:chevy :chevy :chevy :chevy :chevy :chevy :chevy :chevy :chevy
Le Mans Master
Joined: Aug 2000
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From: Lost in the mountains of TN
Re: WHAT IS THE BEST OUTSIDE TEMP FOR MAXIMUM PERFORMANCE ? (kittmaster)
I did a dyno comparison last year. Something like a 30°F (60°-90°) difference yielded a 17hp and 17ft-lb gain at the wheels.
[Modified by BiZ, 11:22 PM 7/15/2003]
[Modified by BiZ, 11:22 PM 7/15/2003]
Team Owner
Joined: Mar 2001
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From: Cincinnati, Oh USA
Re: WHAT IS THE BEST OUTSIDE TEMP FOR MAXIMUM PERFORMANCE ? (Cal Vette)
The lower the air temperature, the more dense is the air and the fuel injection keeps the air/fuel ratio constant so the lower the air temp, the more air and fuel molecules are burning in your cylinders making more hp. The colder, the better! Cold air is just like supercharging.
Team Owner
Joined: Sep 2001
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From: Athens AL
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Re: WHAT IS THE BEST OUTSIDE TEMP FOR MAXIMUM PERFORMANCE ? (Cal Vette)
The colder/denser the incoming air, the more energy is released.
Ideally though the pavement would not be cold, just the air.
Ideally though the pavement would not be cold, just the air.
Safety Car
Joined: Dec 2000
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From: Jacksonville Fl
Re: WHAT IS THE BEST OUTSIDE TEMP FOR MAXIMUM PERFORMANCE ? (scorp508)
0* Kelvin
Drifting
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From: Tracy CA
Re: WHAT IS THE BEST OUTSIDE TEMP FOR MAXIMUM PERFORMANCE ? (Cal Vette)
Here's a thought: The flash point for gasoline is -40 F (or C for that matter) So, below that - you'll need to heat the incoming charge to get it to ignite.
Of course the coolant will be a block of ice and the belts might not flex. Traction would be an issue too!!!
Of course the coolant will be a block of ice and the belts might not flex. Traction would be an issue too!!!
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Former Vendor
Joined: Jun 2001
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From: St Marys PA
Re: WHAT IS THE BEST OUTSIDE TEMP FOR MAXIMUM PERFORMANCE ? (mitchcole)
Its really a combination of humidity, air temp, and baro pressure to give you a relative DA (density altitude).
When your at a track you will hear everyone talking about DA readings.
:cheers:
[Modified by ski_dwn_it, 10:23 AM 7/16/2003]
When your at a track you will hear everyone talking about DA readings.
:cheers:
[Modified by ski_dwn_it, 10:23 AM 7/16/2003]
Race Director
Joined: Feb 2003
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From: Everyday you must choose between the pain of discipline and the pain of regret. Fredericktown, OH
Re: WHAT IS THE BEST OUTSIDE TEMP FOR MAXIMUM PERFORMANCE ? (Cal Vette)
Temp is really just one weather characteristic that impacts performance. Ultimately, you will have a combination of weather. As we have all read, the closer to sea level, theoretically the better a car will perform. As such, many bracket racers and heads-up racers own a weather station that calculates "adjusted altitude". You enter severl weather readings and your static atltitude into a computer and it calclulates number for you that is used as corrected and applies a baseline for all tuners and racers to compare.
The weather pieces used are temp, humidity, and baramotric pressure. Each of which has a dramatic impact on the amount of oxygen per measure of air.
Cooler air is compressed, thus more 02 in the same volume.
Less humid air has less water per measure of volume, and since you can't burn water, low humidity is also a benefit.
Also, the higher the baromoeter, the more atmospheric pressure exists. This means that the atmosphere itself is compressing the air even more so there is more 02 per volume of air.
So, ideally, we would run our cars on a cool, dry day with a high barometer.
I know that was a really long answer and probably way more than you were wanting.
The weather pieces used are temp, humidity, and baramotric pressure. Each of which has a dramatic impact on the amount of oxygen per measure of air.
Cooler air is compressed, thus more 02 in the same volume.
Less humid air has less water per measure of volume, and since you can't burn water, low humidity is also a benefit.
Also, the higher the baromoeter, the more atmospheric pressure exists. This means that the atmosphere itself is compressing the air even more so there is more 02 per volume of air.
So, ideally, we would run our cars on a cool, dry day with a high barometer.
I know that was a really long answer and probably way more than you were wanting.
Safety Car
Joined: Dec 1999
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From: Framingham MA
Re: WHAT IS THE BEST OUTSIDE TEMP FOR MAXIMUM PERFORMANCE ? (Cal Vette)
Colder, more dense air makes more hp as stated above. One problem with cold temp is if the tires become too cold to hook up. I ran into this problem last fall with my AWD vehicle in 40 degree weather, my tires became too cold.
Le Mans Master
Joined: Oct 2001
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From: Atlanta GA
Re: WHAT IS THE BEST OUTSIDE TEMP FOR MAXIMUM PERFORMANCE ? (scorp508)
0* Kelvin :D
So, 1 Kelvin, 0% humidity, at sea level would be ideal, because at 0 Kelvin, all atomic motion ceases. Of couse, you would also have to have one hell of a heater inside to keep you from ceasing to exist, also! :thumbs: :jester
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From: Former NCM Drag Racing coordinator, National director Corvette Challenge Spring Hill, Tennessee: Whiting, New Jersey
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Re: WHAT IS THE BEST OUTSIDE TEMP FOR MAXIMUM PERFORMANCE ? (Cal Vette)
Mineshaft :thumbs: :thumbs: :thumbs:
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From: CT
WHAT IS THE BEST OUTSIDE TEMP FOR MAXIMUM PERFORMANCE ? (mackeyred96)
Mineshaft :thumbs: :thumbs: :thumbs: