Bottle presure Q
08-30-2005, 08:05 AM
#21
My transducer does not work as advertised (cut on after 50psi drop) so I use and set my transducer to cut OFF at 1200 for safety reasons only. I monitor nitrous gauge then switch bottle heater off at 1100 before purging then spraying @1050psi.
Last edited by gollum; 08-30-2005 at 01:19 PM.
08-30-2005, 09:17 AM
#22
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Originally Posted by gollum
My transducer does not work as advertised (cut on after 50psi drop) so I use and set my transducer to cut OFF at 1200 for safety reasons only. I monitor nitrous gauge then switch bottle heater off at 1100 before purging then spraying.
How do you adjust the transducer?
08-30-2005, 12:55 PM
#25
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As has been stated already, every nitrous company determines their jetting based on fuel pressures and on a pre-set bottle pressure. I believe TNT sets their's for either 900 or 950psi (David@TNT can confirm for sure though), Nitrous Express does all of our jetting on a custom flow bench that uses 1050psi bottle pressure.
On a side note, nitrous oxide will convert from a liquid to a supercritical fluid (neither gas nor liquid) at 1052psia, which is 1037psi if you are looking at a gauge. Generally, once it turns into a supercritical fluid (when it's above 1037psig) there won't be as much gain from it as when it is a liquid (I have seen/heard of some guys gaining hp, though these cases are kind of rare). However, once the fluid is moving (when the valve and/or solenoid is opened) it will cool down, and if it is close enough to the critical pressure it can cool down enough to revert back into a liquid. A problem could arise if you try to use the system at a high enough pressure that even after it cools during it's movement through the lines it doesn't change back to a liquid before entering the engine.
I say a problem "could" arise because currently I don't think anyone has done any conclusive testing to find out what, if any, affects there are when using nitrous oxide in it's supercritical state.
Sorry if I bored any of you guys, lol. Just thought I would throw that out there since we are talking about the operating pressures of nitrous systems.
On a side note, nitrous oxide will convert from a liquid to a supercritical fluid (neither gas nor liquid) at 1052psia, which is 1037psi if you are looking at a gauge. Generally, once it turns into a supercritical fluid (when it's above 1037psig) there won't be as much gain from it as when it is a liquid (I have seen/heard of some guys gaining hp, though these cases are kind of rare). However, once the fluid is moving (when the valve and/or solenoid is opened) it will cool down, and if it is close enough to the critical pressure it can cool down enough to revert back into a liquid. A problem could arise if you try to use the system at a high enough pressure that even after it cools during it's movement through the lines it doesn't change back to a liquid before entering the engine.
I say a problem "could" arise because currently I don't think anyone has done any conclusive testing to find out what, if any, affects there are when using nitrous oxide in it's supercritical state.
Sorry if I bored any of you guys, lol. Just thought I would throw that out there since we are talking about the operating pressures of nitrous systems.
