Bottle Pressure Explained...
Launching!
Joined: Dec 2005
Posts: 232
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From: nj, edison
Most companys have a recommended pressure of where there particular system works well at. Some solenoids cannot handle above 1000psi. Although most of the time when a solenoid does not open it is usually a ground or wiring issue. Personal preference is usually what calls out for the pressure.
When i jet customer cars i have had customers start out with there standard system before NANO anywhere from 850psi to 1150psi. Like i said ask your nitrous manufacture for there recommended pressure or find where you like best. With NANO our starting pressure is always 1050psi and 950psi flowing down track.
When i jet customer cars i have had customers start out with there standard system before NANO anywhere from 850psi to 1150psi. Like i said ask your nitrous manufacture for there recommended pressure or find where you like best. With NANO our starting pressure is always 1050psi and 950psi flowing down track.
There was a good discussion about this a long time ago. One guy was talking about how he ran 1400 or so psi, made higher average power, and discussion ensued. I think one of the advantages of the nano setup is having consistent pressure without heating the bottle. You are getting a constant pressure while flowing a higher density nitrous through a static line.
I'll see if I can find that other thread.
I'll see if I can find that other thread.
that was a good thread!
interesting thing that happened 3wks. ago. the speed shop at the track, serviced the bottle 3lbs over the limit and so with my nano connected [press. normally at 1050] the bottle press. misteriously settled to 900, i swear my purge cloud seemed much thicker, and it certainly left me curious to see if 900 is a better, much denser shot, hence the run felt surprisingly strong. the press. did stabilized back to 1050 after the third run, thought i bring this up since we are discussing bottle press. dynamics. i didn't think that bottle press. droped at all when on nano. i've had my wife activate the purge sys. and i counted to 12, while watching for press. drop, and did not see more than 50psi drop. i have also purged with the nano bottle not connected but with the n2o bottle already primed to 1050 and noticed almost the same small drop.
785-331-2390
Brad
lol not necessary, i promise...it was more to illustrate what goes in to properly designing a direct port system.
i would think that maintaining the bottle press. with a nano sys. becomes more benefical than a bottle heater, but what is the ideal press.? 900? 950? or 1050? ect. fact, my supply line runs the entire length of the car [ trunk to eng.] and so i purge for what seems a very long time compared to some videos i have seen. does a 15lb bottle hit a bit harder than a 10lb bottle?
Last edited by Mike@HSW; Jul 21, 2009 at 09:38 AM.
Teching In
Joined: Jul 2007
Posts: 32
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so if you jet for 900psi and your goal is 150hp, then the jet size would have to be smaller compared to 1050psi. and if a kit is designed for 1050psi and you run 900psi will you be running more hp? and if true then 150jet set-up would would be maybe 170? is this right? so what's the ideal psi?
I think the consensus is that 950PSI flowing pressure is the ideal PSI, given a free flowing system. NANO, NOS and HSW, IIRC, are but a few that run this PSI.
My opinion today is that bottle heaters are dated technology and any real serious nitrous user would benefit by running a NANO system. That has always been one of the biggest draw backs of running nitrous, esp bigger hits, that is the tune falling off on the top end and loosing power. Some classes allow only one kit and if we can stabilize the pressure that is good for about a 25% increase in power thru the run. Also we can run the entire contents of the bottle which allows a smaller bottle (weight) for class racers.
Robert
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so if you jet for 900psi and your goal is 150hp, then the jet size would have to be smaller compared to 1050psi. and if a kit is designed for 1050psi and you run 900psi will you be running more hp? and if true then 150jet set-up would woul be maybe 170? is this right? so what's the ideal psi?
950, thats what our kits are jetted for. The point of the post is that a pressure drop is going to be smaller at 950 than 1050. Now dont get me wrong on a 125 shot it might not be noticable at all on a smaller shot.
Gas form isn't what you want to be spraying. It's really not even a pure gas at that temp. Not an ideal situation. If you want to soften the hit, increast the line length from the solenoid to the nozzle.
Robert
