engines) create energy by burning fuel and oxygen. Air is approximately 80 percent nitrogen and 20 percent oxygen. Cold air is more dense than warm air: therefore, cold oxygen is more dense than warm oxygen.

The force created by and explosion of fuel and dense air (cold) with be greater than the force created by fuel and less dense air (warm).

Is this correct? Am I on the right track trying to explain why my car is faster when the temperature is 60 degrees rather than 80 degrees?

BTW lets hold a discussion about humidity for another day.Thanks for your help.

 

Davidy, you are correct...more the most part. It falls under the same principle as why cars tend to perform better at lower altitudes than higher altitudes.

Let me know when you want to have that humidity discussion...it throws off everything.

 

Yep, you got it.

 

In general you will have about a 1% gain in horsepower for every 10 degree Farenheit drop in air temp. The difference in power on a stock 350Z will therefore be about 6 hp between a 60 degree day and an 80 degree day given equal humidity. Humidity is a big factor, however, and in many parts of the country, goes hand in hand with heat. Water vapor lowers the partial pressure of the oxygen in the atmosphere as well. The difference in engine power output on a dry 20 degree winter day and a muggy 98 degree summer day can be over 40hp.

 

Sounds like someone discovered PV=nRT !!!!!! LOL

(I know air is not even close to being an ideal gas - don't get me started)

 

“(I know air is not even close to being an ideal gas - don't get me started)”

Why is NOS popular? NOS is Nitrous Oxide: one part nitrogen and one part oxygen. Why not just leave out the nitrogen, and run pressurized oxygen?

 

One of my friends really thought of doing that, running small shots of oxygen, never did apply it.

 

good question...

My best guess would be too corrosive..

 

Well, with N2O...aren't you upping the Oxygen intake to 33% vice the normal 20%?

 

Oh, and my plan is to do everything I can to my Z on the NA side and then spray it.

 

Probably cause of the KABOOM! effect.

 

Rather than nitrous, inject oxygen and acetylene.

 

That's what I suspected. The pressurized oxygen-fuel burn creates too much heat. Maybe that's the problem.