Wrapping the rail

[sblake01]

Due to the simplicity of the system how much fuel is ejected under those conditions would also fall under the catagory of the aforementioned 'questions nobody really needs the answers to' (IMO).

[5thhorsemann]

The boiling point of gasoline varies widely with barometric pressure and altitude, and creates less pressure as it boiles. It's not comprable to water, as the complexity of the gasoline molecule doesn't cause the expansion you see in the simple H2O molecule. The alcohol additives make it more temprature stable, the recirculation of the fuel in the system makes it more stable still. The gasoline absorbs and sheds heat energy faster than water, and thermal stabilization occours faster in gas as well. Also liquid gas volume changes more with temp. than water.

The ease with which gasoline conducts the thermal energy, coupled with its ability to exist as both liquid and vapor at the same pressure, lends it to vapor binding. likewise, it will allow it to condense back to a liquid much faster. The high pressures of a fuel injection system greatly reduce the ability of gasoline to change state from liquid to gas. It will however vaporize as it leaves the injector nozzle and give a leaner, or less dense charge in manifold vaccume. This problem increases with a hot motor, hot fuel line, altitude and ambient temp.

[sblake01]

But how long will that condition exist once the fuel is moving through the system at 36+ psi.? A second, maybe even less? Again, I think there a lot of overthinking going on in this thread. If everything in the system is in proper working order, none of this really matters.

[5thhorsemann]

But how long will that condition exist once the fuel is moving through the system at 36+ psi.? A second, maybe even less? Again, I think there a lot of overthinking going on in this thread. If everything in the system is in proper working order, none of this really matters.

The only thing that wraping the line will change is allowing heat energy to exchange into or out of the system at that point. If you put a cool can in the system prior to the rail, you would get a fatter charge, but the EFI would correct for the condition anyway so it's a moot point, me thinks.

[sblake01]

In the immortal words of Inspector Clouseau, "that is what I have been saying!":)

Edited February 14, 2011 by sblake01

[5thhorsemann]

Does your dog bite?