Jump to content
SAU Community

Recommended Posts

  • Replies 114
  • Created
  • Last Reply

Top Posters In This Topic

Gojira: I was making the point it is not flammable in its own right by explaining how it replaces pure O2 in the combustion process but that web page is very interesting. The author really empahsizes the fact that N2O actually increases oxygen availability, if this was the case then why dont we just use pure O2 instead of N2O? Oxygen is a smaller molecule and there would be more oxygen in the same space without nitrogen to get in the road? Also I dont think that people who shoot NOs into thier engine need to run richer.

I would envisage that the N2O, under certain conditions, would break down to Nitrogen and an Oxyanion (single oxygen atom with excess electrons). This Oxyanion is very unstable (compared to an oxygen molecule) and wants to get rid of the excess electrons and does it with a great release of energy by bonding to a carbon atom or even a couple of hydrogen atoms and hence more energy produced per unit fuel.

I have used nitrous oxide in instruments before (to atomise and evaporate metals). Just as a comparison the flame from an acetylene nitrous oxide mix compared to the of a oxygen and acetylene mix is a lot more hotter from the same fuel mix and flow rates.

Sorry to go on like that but take it or leave it. Wouldn't it be funny to vent the nitrous near a group of people and actually just watch them start to get high from the mild anaesthetic effects of nitrous (laughing gas). I dont recommend it though!

2rismo: This thread makes me cry. Seriously. I'm not even going to go back and reply to all those misinformed posts... It would take me way too long.

nath_gtir: The reason why N2O is used instead of pure oxygen, is because pure oxygen is a flammable in it's own right and quite dangerous to be spraying around the engine bay. Also, the Nitrogen component (when it breaks down into N, N and O) has a EXTREME cooling effect on the intake charge, much more so than pure oxygen would. This obviously creates a much denser intake charge, also raising the detonation threshold.

You can't go around spraying automotive grade nitrous oxide at people because it has been poisoned by the manufacturer with 1ppm (parts per million) of sulfur dioxide to deliberately stop people going to their race store and buying laughing gas to use at parties... If you inhale enough to make yourself all happy, it won't last long as you'll soon be keeled over throwing up :wave:

lol... that would be funny... he he he... but yeah... i wouldn't recommend it either...

Also: ihavn't looked at the page yet so maybe i should but i thought:

*Logically nitrous oxide contains oxygen (thus oxide)...

*the mix was used to cool the intake temperature down

Thus, the nitrous oxide does a few things:

*Cools the air teperature

*In doing so, makes the air denser, which means there's more of it and it fires better

*increases the oxygen levels....

is this somewhere near the mark or do i have no idea what-so-ever about what i'm saying and i should shut up now to avoid further embarassment???

cheers,

Dave.

DJ984: You have to think about what part is doing what things.

N2O is injected as a fine atomised spray into the intake piping/intake runners... As it approaches the cylinders it heats up and breaks down into nitrogen and oxygen.

The nitrogen:

* MASSIVELY cools down the intake air resulting in denser charge, and as a result... More power.

* The denser charge also acts as a detonation inhibitor so the Oxygen can do it's thing.

The oxygen:

* after breaking down into pure O atoms, are very flammable. And along with increased fuel to burn these new O atoms, you get....... More power.

So both parts of the N2O molecules play a very important part in the process.

damn merli, you answered my questions before i asked them.... lol... must've typed at the same time... lol

Oh :D I thought you were a bit slow there, and didn't understand so I retyped it out in baby steps for you :wave::):D

yeah... that's exactly what i thought... i just wasn't to good at wording it... lol

just for purging sake though...('cause i like rice *shame on me*...lol) the C02 won't kill anyone will it (not that i'm gonna purge it often and not that i'm gonna aim it at people either...)...

When i get the FMIC, i wanna get one of those Ntercooler kits and get a couple of purge valves so it does it just like in 2F2F (sad, i know... but it looks soooo damn koool....)

So the C02 will be used to cool the intercooler above certain boost levels/throttle levels/revs etc etc... and then there'll be a ricie purging just to show off...

i don't wanna hook real nitrous up to the engine because if the cops see that then i can say bye bye INSURANCE; REGO; CAR; LISCENCE etc... (may have exagerated a lil but you get the point...)...

Or are you suggesting i use nitrous in the spray kit instead of carbon dioxide?

No, if you just wanted to spray, definitely use the cheaper CO2.

But you realise that it isn't illegal to have nitrous INSTALLED in your car right? It's only illegal to have to bottle hooked up in your car whilst driving on public roads. Just use the car as normal when driving, and when you hit the drag strip, hook that baby up and see those times drop like an anchor!

Just ask 2rismo :wave:

Where you might come to grief is that your insurance company might not like that idea (some do, some don't)... Most people don't tell their insurance about nitrous :) But it's PERFECTLY legal to have installed in your car.

ooooh! now where talking good ideas!

yeah, i definately waanna use C02 in the spray kit... (cheaper for purging/wasting)...

then i might look at doing exatly that for when i get on the drag strip...

What's the easiest way to have it disconnected for street and connected for strip?... would you say just close the bottle with the nozzle on it and take the tube off when i'm on the street; then plug in the tube and open the nozzle for the strip? or is there a better way?

Also: If i want to hook N2O up to the engine; what else should i do? Or will it be ok? (i'm guessing not???) Is it true that i can have it tuned to automatically inject the N2O once it hits a certain rev point?... (rather than using a button like in "TF&TF/2F2F")...

cheers...

just buy a purge system and fit up some LP gas, much cheaper and you can fill up when you get petrol:p

will do the same job, and you could wire in a spark plug to really impress the chicks at night - also very handy if you cant find a cigarette lighter - I am sure there would be more uses, like if you drive near a swamp and there are lots of mossies around, getting cats out of trees etc

What's the easiest way to have it disconnected for street and connected for strip?... would you say just close the bottle with the nozzle on it and take the tube off when i'm on the street; then plug in the tube and open the nozzle for the strip? or is there a better way?

That works just fine, but make sure you screw in a little plug to plug off the end of that nitrous line to contaminants don't get in there...

I think cops will still be very testy if they find the nitrous bottle in your boot, so I never ever drive around with it in my boot unless I'm headed to the drags. The less ammo you give the cops the better IMHO.

Also: If i want to hook N2O up to the engine; what else should i do? Or will it be ok? (i'm guessing not???)  Is it true that i can have it tuned to automatically inject the N2O once it hits a certain rev point?... (rather than using a button like in "TF&TF/2F2F")...

cheers...

Kinda... What you want is for it to only come on at WOT (full throttle)... So you can either use an electronic output from your ECU (if you have microtech, autronic or something like that) or just hook up a microswitch onto your throttle body that turns on at full throttle. If you have it hooked up like that, just don't go 100% throttle unril you hit your desired rev point (usually 3000rpm) EASY! :wave:

just buy a purge system and fit up some LP gas, much cheaper and you can fill up when you get petrol

will do the same job, and you could wire in a spark plug to really impress the chicks at night - also very handy if you cant find a cigarette lighter - I am sure there would be more uses, like if you drive near a swamp and there are lots of mossies around, getting cats out of trees etc

lol... nah, think i'll just stick with the C02... that'll cool the intercooler better i think... but nice thinking... lol

Merli: yeah, i just thought after i posted "maybee only put the bottle in the boot when your gonna go to the strip and use it..." lol

But, yeah... didn't think about plugging the tube... thanks...

So i can use the standard computer and hook up a "microswitch".. to inject NO2 at WOT?... that sounds like what i want....

What about engine wise?... should i do anything to the engine or will it be alright?...

So i can use the standard computer and hook up a "microswitch".. to inject NO2 at WOT?... that sounds like what i want....

What about engine wise?... should i do anything to the engine or will it be alright?...

Yep, stock computer will be fine... Engine will be fine, just stick to a 50hp shot or less...

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Latest Posts

    • Oof, I will forevermore have those shredded gears in mind whenever someone talks about showing mechanical sympathy towards their car. Thanks for the photos, fascinating stuff!
    • Curious to see how the SpeedTek stuff holds up
    • The holdups last year were drivetrain related. I had the car out right after getting the bearing issue resolved. Third launch and the car didn't move after releasing the clutch. It had sheared all the engagement teeth off the 1st gear.    Thankfully no other damage was done. I set an aftermarket gear beside an OEM gear and found that the engagement teeth on the OEM gear were much larger and better supported. Looking through my bin of spare transmission gears I found that there are two types of tooth on the OEM first gears - the larger tooth and the smaller tooth. It looks like most aftermarket gearset manufacturers base their design on the smaller tooth. OEM large tooth left - Speedtek, OS Giken, etc or OEM small tooth right Decided to give that larger engagement tooth a try. Pressed the ring off an OEM gear and sent it to a transmission manufacturer here in the States. They did their "faceplating" operation with my synchro ring on the Speedtek gear.   I reassembled it, took it back to the track and promptly destroyed the gear itself.  I'll rebuild this and use it as a spare - thankfully just first gear and the countershaft are damaged beyond repair. Definitely disheartening but my welded on engagement tooth ring held up!  Moved to Speedtek's dog engagement design as the gears appear to be much stronger. So far they have taken much more abuse at the track. Also scored a Stillway lockout from the Netherands for super cheap. It's for some other RB transmission so it took a bit of fabrication to fit but honestly a very easy job. I also had to heavily modify the gates as they were very different.   Then for some reason at the last test and tune a silicon coupler below the throttle blew off and took out the radiator and fan. Thankfully it was in the burnout box and not down track. This car is really beating me up - I still haven't made a pass in it. Ran it through the gears many times on the street but it keeps biting me at the track.  Currently in the process of replacing the radiator and remaking the throttle pipe to remove the coupler and use a cast 90 and a vband. I WILL get this thing down the track...
    • Covers most of the above points really. There's a few exceptions but most just see driving as an irritating but necessary task they must complete if they want to get anywhere on time. Also see it as a good time to show their awesome multi-tasking abilities on their mobile and/or doing their makeup.  
    • I don't believe I posted pictures of the second oil pump pickup I added so here they are. Data shows it gets oil pressure up to the relief pressure much earlier in the RPM. Is that important? Not likely... This was just another attempt to fix the bearing issues.   I also heavily opened up the inlet to the pump since it now had to flow oil from two pickups. I believe the diameter increased about 1/8".
×
×
  • Create New...