Dry Ice.
 

Anybody ever put a little bit in your fuel cell when chillin the motor? When chilling do I need to richen up the motor. Lt1 combo. 12.9-13.1 is my AFR.

Re: Dry Ice.
 

Yes and it is not advisable.

Re: Dry Ice.
 

Lol. Thanks. You sound like you are talking from experience.

Re: Dry Ice.
 

You have a message.

Re: Dry Ice.
 

I was asked if I had done that when I was borderline on a fuel check once.

Re: Dry Ice.
 

Wondering, can the dry ice be placed in a secure container then placed in the fuel cell, then removed before starting the engine for the race?

Re: Dry Ice.
 

Is "artificial cooling" not legal? Is fuel temperature not a part of fuel check?

Just asking.

Re: Dry Ice.
 

Dry Ice has to be vented

Re: Dry Ice.
 

You MUST remove the foam! MUST. The dry ice has nothing to do with water so it won’t dilute the fuel and will be gone by fuel check. They check fuel temp after the run to determine the correct chart to use for the fuel check. If you refrigerate your gas and use a cool can it’s pretty cool anyway.

Re: Dry Ice.
 

Ever had that feeling in your stomach from too much acid and its bubbling?

Re: Dry Ice.
 

Just had this discussion with a 22 year old in a physics class. The bubbles are carbon dioxide. He was not sure if dry ice removes dioxide from the fuel. If it does it would damage the fuel potency.

Re: Dry Ice.
 

Fuel temp is part of Fuel Check. I have been quizzed about my low fuel temps.

Re: Dry Ice.
 

I thought it takes heat to help atomized the fuel so the smaller particles will burn more completely. Will cooling the fuel slow the process and result in larger particles in the cylinder. Is it less important in a FI than a carbed engine.

Re: Dry Ice.
 

The reason is because temperature changes the specific density of fuel.

Re: Dry Ice.
 

Increased fuel temperature makes the fuel less dense and reduces the amount of oxygen, many times turning it into vapor. Cooling the fuel, increases its density and the oxygen molecules stay closer when compared to hot fuel and reduces vaporization. It also reduces the vaporization rate of the fuel. That is why warm or hot fuel causes vapor lock.

Re: Dry Ice.
 

Saw a racer drop a chunk in his fuel cell before a class run and it erupted like a small volcano.LOL

Re: Dry Ice.
 

Thanks