Chilling , Nitro Fuel ??

After attednding recent races, and competing in tad running an injected nitro dragster , its very common to see most a/fuel teams are chilling the nitro in the trailer & pouring it the tank , just before they go to the staging lanes , and keeping the tanks insualated or wraped while waiting to run
no complaints with that at all , it sure is a low cost way to pick up a tenth or so .wondering , whats the advantage ?
as i chilled a jug of 95.8 % @ home in my chest freezer & after it was 30 degrees , its still tested 95.8 ??

 

Here's what you need to do, leave some out in the heat and see if it loses %
then if it dose you can figure it out your self.

 

The thought that also comes to my mind is, and you said the word but I don't think you applied it. Density! Wouldn't you also be able to achieve more total potential BTU's by volume with a chilled fuel even though the percentage would read the same? Water is the only substance that expands when chilled (kepts the fish alive, God thing) everything else reduces in volume size.
Just a thought..........

Blessings.........Ron Clevenger.

 

Chilled fuel would cool the incoming mixture even more than ambient temp fuel would. Cooler mixtures are more dense hence more air and fuel. Dave Germain

 

It sounds like most that have responded agree that cooler fuel would be more dense, creating the need for "more air". Does anyone actually do this and what are the results?

If this is an experiment that needs to happen, then just assign it to someone and let them tell us what happened when they did it.

I vote for Dave G. to do it and give us the end results!

 

1.Bill Reichert
2.Art Gallant

 

The only experiment that is needed is what to do to the tune up to apply it. And that should be a mathematical equation to get into the ball park. It's straight forward in physical sciences that it's denser, hence more btu's per volume. The NHRA Stock and Super Stockers have been applying it for many years in chilling or cooling there fuel. It's the same science, just a different tune up application. I would suggest that someone is already applying it.

Blessings........Ron Clevenger.

 

bought smaller chest freezer installed in trailer , holds 4 jugs , should do the trick ,

 

Anytime the denisty of nitro changes there will be a percentage change.
With the current method used to temp correct the percentage you wish to run it will be that percentage no matter the temp. If you read the density of 96 percent nitro @ 60 degrees temp corrected it will read the same density @70 degreess. This said a cool 97 percent would probably produce a little more hp. Of course you have the evaperation of the alcohol that is reducing the fuel intake charge temp so what effect this has on the fuel temp I am not sure. When we were allowed to run nitro right out of the can almost nobody had a hydrometer. Then it was an excellent idea and performance inhancer to chill the nitro.

 

I think there are two factors here- fuel and air. I don't know that cooling the fuel will increase it's density much but cooling the air will increase it's density. I was thinking that cooler fuel would cool the air more so more air density. The big question is- can I cool the incoming air/fuel mixture enough to allow me to run more fuel through the motor? More air/fuel=more power. But on the other hand unless my clutch is locked from the starting line to the finish line do I need anymore power? Dave Germain

 

Can i pour my fuel in the car , in the staging lanes ? that way it can stay as cool as possible . like a couple cars back in line. as long as I dont hold anyone up . This way I can get every possible advantage of the chilled fuel . & on the competion. So those darn blown cars wont win anymore races & NHRA can take some more % away .