Power Adders Getting a Supercharger or Turbocharger? Thinking about using Nitrous? All forced induction and N2O topics discussed here.

bottle pressure

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Old Mar 19, 2002 | 10:13 PM
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From: W. Kentucky
Car: 83 Z-28
Engine: 406
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bottle pressure

How much does this effect the power? My bottle is full and at the temp that it is outside (55 degrees) it only has 700 psi. Does this just effect the initial hit?
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Old Mar 19, 2002 | 10:34 PM
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With a bottle pressure of 700 psi you are dropping the flow rate considerably (20%) from the 900 or so psi you should run at. Also at a fuel pressure of 6psi (for a carb) this is equivalent to running 3 jet sizes too rich. It will affect the power delivery substantially.
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Old Mar 19, 2002 | 10:38 PM
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From: W. Kentucky
Car: 83 Z-28
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Thanks. I wasn't aware about the running rich. I guess I should get a bottle heater. Next on my list.
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Old Mar 21, 2002 | 05:28 PM
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From: Dale City, VA
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A Bottle heater is a must IMO. Have fun!
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Old Mar 21, 2002 | 09:15 PM
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$45.00 bottle heater!!!

1. Get one of those $35.00 power inverters. I direct wired mine and attached it to the side of the consol. Now you have a household outlet in your thirdgen.

2. Buy a $10.00 heatpad at wal-greens.

3. Wrap that baby around your bottle, crank it up to hi, and plug it in!

tip: Plug it in inside your house for about 2hours before you head out for some "street fun" and you'll be right at about 900psi.
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Old Mar 21, 2002 | 09:15 PM
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From: W. Kentucky
Car: 83 Z-28
Engine: 406
Transmission: TH350
Axle/Gears: 3.70
What brand should I get? NOS? How much is the one that goes off bottle pressure instead of temp. Also, what brand is that one?
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Old Mar 21, 2002 | 09:25 PM
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I think the Nitrous Express bottle heater works off of pressure.
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Old Mar 21, 2002 | 09:36 PM
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Hey StockBastard, Is this what you use? I don't really like the idea of have a power inverter in my car. I wouldn't mind hooking the pad up in the garage before I go out, though.
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Old Mar 22, 2002 | 04:02 AM
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I have a new NOS bottle heater. Only open it to take out instructions and relay. Will sell it to you for $50.00+shipping. Not using it because I'm building a drag car and I am getting a "HOT BOX" to heat 2 bottles at a time. Email me and let me know.

bjm323@yahoo.com
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Old Mar 22, 2002 | 09:28 AM
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Stock bastard, your make-shift bottle heater scares me. Is it thermostatically controlled?
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Old Mar 22, 2002 | 09:39 AM
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Originally posted by Cosmik Debris
With a bottle pressure of 700 psi you are dropping the flow rate considerably (20%) from the 900 or so psi you should run at. Also at a fuel pressure of 6psi (for a carb) this is equivalent to running 3 jet sizes too rich. It will affect the power delivery substantially.
New Flow Rate = Old Flow Rate * (New Pressure / Old Pressure)^0.5

New Flow Rate / Old Flow Rate = (New Pressure / Old Pressure)^0.5

New Flow Rate / Old Flow Rate = (700 / 900)^0.5


New Flow Rate / Old Flow Rate = 0.88 or 88%


So even though we lose 22% of the pressure with an unheated bottle, 12% of the flow potential is lost with an unheated bottle.

The critical point for N2O is 98°F. If N2O gets above that, the liquid N2O turns into a gas.
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Old Mar 22, 2002 | 09:47 AM
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Incorrectly wired NOS heater without proper/redundant safeguards.





Here is the skinny....

Last edited by a73camaro; Mar 22, 2002 at 10:18 AM.
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Old Mar 22, 2002 | 12:59 PM
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make shift bottle heaters work if you are on a budget and NOT A COMPLETE F'ING MORON.


just make sure you ONLY run it when you need to be, and your eye NEVER comes off that pressure gauge... if you absolutely HAVE to have your 1050 psi (which is where n2o is supposed to be at, not 900psi.) for a track run, or something similiar.. you can use the heating pad method.. unless you want you or your car to die, do NOT run this setup on the street, or leave it on unattended.
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Old Mar 22, 2002 | 07:10 PM
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Holy crap im really concidering not using nitrous now. even though i dont have a bottle heater the pressure wont be to high but still just imagine sittin at the track and just chillen and then BOOMM and u and ur car blow up. damn. i think i might go with all the safety stuff i can get.
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Old Mar 22, 2002 | 07:29 PM
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From: W. Kentucky
Car: 83 Z-28
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Transmission: TH350
Axle/Gears: 3.70
Originally posted by 1982chevycamaroz28
Holy crap im really concidering not using nitrous now. even though i dont have a bottle heater the pressure wont be to high but still just imagine sittin at the track and just chillen and then BOOMM and u and ur car blow up. damn. i think i might go with all the safety stuff i can get.
That is a rarity with that car. His blowoff valve should've let the pressure out before it blew.
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Old Mar 22, 2002 | 07:45 PM
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yea it might be a 1 in a million things but i think ill try and get all the little safety gadgets out there that i would be able to get. and i think ill have more respect for a gas that could kill ya like that, luckly there was no one in that car at the time.
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Old Mar 22, 2002 | 08:30 PM
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From: W. Kentucky
Car: 83 Z-28
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Transmission: TH350
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I do agree with all the safety stuff. In fact, I have the blow down tube vented outside the car and I have the fuel pressure safety switch.
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Old Mar 22, 2002 | 08:43 PM
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Transmission: built 700R4 w/custom converter
Axle/Gears: stock w/later 4th gen torsen pos
its cold here, we sell bottle heaters, but I just dont feel like putting one in, I like heating the bottle in the bath tub or infront of the gas powered fireplace (not to close though) and then keeping under my heater on the floor until race time. I cant "blip" my nitrous all night down town looking for a race but then again only jack A$$e$ and ricers do that.
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Old Mar 23, 2002 | 10:18 PM
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Yes, I really do use an inverter and a heat pad. I have the fuel pressure gauge mounted on my dash, so at the first sign of to much pressure I can reach down and turn off my inverter. I never leave my bottle in the car, so I don't plan on blowing my third gen to peices like that moron in the pictures above. If I remember the story right he had removed the pressure valve.

The heat pad works ok, but doesn't get hot enough to maintain 900-1050 psi. After one or two hits it cools off real fast.

It's a temporary fix till summer.
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Old Mar 24, 2002 | 11:42 AM
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Originally posted by StockBastard
Yes, I really do use an inverter and a heat pad. I have the fuel pressure gauge mounted on my dash, so at the first sign of to much pressure I can reach down and turn off my inverter. I never leave my bottle in the car, so I don't plan on blowing my third gen to peices like that moron in the pictures above. If I remember the story right he had removed the pressure valve.

The heat pad works ok, but doesn't get hot enough to maintain 900-1050 psi. After one or two hits it cools off real fast.

It's a temporary fix till summer.
If that guy is a moron for making a mistake, then I also join the ranks of moron-ness...LOL, cause I've made plenty of mistakes myself. It is how we learn.

With the blown up car, the blow-off failed. The temperature controller worked off of line pressure. With the bottle closed, the sensor would only measure line pressure, not bottle pressure. That was part of the design problem.

Also the bottle heater was connected to battery power. It should of been connected to ignition power.

With such a potential source of danger, at least two safety devices should be utilized.


StockBastard, why do you pull out the bottle everytime from the car? A bottle won't blow up by itself.

Last edited by a73camaro; Mar 24, 2002 at 11:57 AM.
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Old Mar 24, 2002 | 03:35 PM
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Originally posted by a73camaro


New Flow Rate = Old Flow Rate * (New Pressure / Old Pressure)^0.5

New Flow Rate / Old Flow Rate = (New Pressure / Old Pressure)^0.5

New Flow Rate / Old Flow Rate = (700 / 900)^0.5


New Flow Rate / Old Flow Rate = 0.88 or 88%


So even though we lose 22% of the pressure with an unheated bottle, 12% of the flow potential is lost with an unheated bottle.

The critical point for N2O is 98°F. If N2O gets above that, the liquid N2O turns into a gas.
Yeah, you are correct. The old square root thing.
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Old Mar 24, 2002 | 05:39 PM
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Car: 88 GTA + Dakota on N20
Engine: 383 4 bolt
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Yea i remember reading about that explosion before. I guess he found a way to cap off the pressure release and then let his bottle get way to hot. What a moron, and people wonder why nitrous has such a bad name. I do wonder though how high the pressure got before it blew. HEY how come the fast and furious car didnt do that when its bottle blew up. LOL
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Old Mar 24, 2002 | 06:00 PM
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Here is the owners explaintion

http://www.nettally.com/silly34/nitro.htm

I doubt that he capped off his NOS blow-off. There was NO reason to do that.
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Old Mar 24, 2002 | 08:34 PM
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He already admitted doubling up on the safety disc. He admitted powering up the heater to a constant 12V source instead of a switch 12V source. He admitted removing the thermostat on the heater so it would keep heating.

He then retracted those statements when the though of suing Nitrous Express entered his little brain.

Nitrous didnt cause that explosion.

His stupidity did.
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Old Mar 25, 2002 | 12:46 AM
  #25  
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From: Temperance, MI
Car: 88 GTA + Dakota on N20
Engine: 383 4 bolt
Transmission: 700r4
Yea it seem like the first time i read it it said something like he capped it or to that effect. But i do remember for sure that he had modified it some how. Wow those blow off valves go all the way up to 3000 that seems a bit excessive. What if you activated the system at 2000 psi? lol Boom pieces of motor everywhere
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Old Mar 25, 2002 | 12:51 AM
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Car: 88 GTA + Dakota on N20
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Transmission: 700r4
But I have to admit if I was that stupid i would probobly sue somebody else just to make myself feel better. heh
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Old Mar 25, 2002 | 09:13 AM
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Originally posted by Omar
He already admitted doubling up on the safety disc. He admitted powering up the heater to a constant 12V source instead of a switch 12V source. He admitted removing the thermostat on the heater so it would keep heating.

He then retracted those statements when the though of suing Nitrous Express entered his little brain.

Nitrous didnt cause that explosion.

His stupidity did.
That sounds right Omar. I forgot he bypassed the thermostat. Sounds like he changed his toon in lue of the suit.

I guess State Farm desided that they won't pay his claim. Due to lack of gray matter.
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