AO

You so do not know what you're talking about...

Nitrou Oxide is an oxygenator and is non-flamable.

V2Rocket

I'm more worried about the big jump in pressure inside the cylinder. The amount of nitrous that he plans on running will be like running a small turbocharger. Also, if the nitrous breaks down from heat inside the cylinder, the added oxygen and fuel will make a more powerful explosion, which although is what he wants, may put additional stress on the internals.

mark kibort

no different than reaching that hp in a way that is normally aspirated. Its all about mass flow, of both fuel and air. think of NOS as just cold air and he is adding more fuel to match. however, can a stock internal engine handle 500hp. well, anderson and fan are getting 500rwhp (and so is Devek and Ott).
the rods and pistons of a stock engine are plenty strong, in fact, maybe too strong, as the pistons and rods on the stroker are usually lightened to allow for higher rpms to reach those HP numbers. with less rod angles without a stroker, the weak links are probably in areas of the head gasket and gear box!

the only concern i would have is the pre-ignition that can happen in the intake with a wet, single nossil NOS system. However, if it is only used when the RPM is farily high, it shouldnt be an issue, however, any time you have a hot metal surface around a large volume of flamible gas vapor, you have a risk. Thats one of the reasosn why i used a "dead pedal" NOS activation switch so that i only used NOS when i was full throttle and wasnt shifting. (and the rpms were a little higher than 3000rpm)

Mk

V2Rocket

As long as you're confident that your motor can handle "boost", best of luck and enjoy.

FlyingDog

Nitrous and "boost" are different. Boost by supercharger or turbo charger is more mass of the same air mixture with the same or (usually much) more heat in the same volume. Nitrous is a gas with greater oxygen concentration and less heat (usually very cold coming out of the bottle) in the same volume. Running nitrous actually can help make turbo and SC systems run safer by dropping charge temps. The increased oxygen content does make fire far more likely, but something still has to go horribly wrong to start the fire.

mark kibort

yes, the nitrogen and temp tend to make the flame front propogate in a much more controlled fashion, vs one from a N/A or boosted engine.
there is more available oxygen for a given mass flow of NOS, but its not that much more. what is it, 25 % vs 20% or something like this.

mk

ceedee

the car in fast and furious blew up ,though...lol

nos sounds good to spool up the turbo's, though

V2Rocket

I'm just talking about how much extra "stuff" is being crammed into that cylinder. I'm sure a regular camshaft will only lift enough to allow so much air to pass through, but the pressure inside the intake from a 500 shot worth of nitrous will be like trying to inflate the cylinder. All that extra air + all that extra fuel may stress your engine a little too much. I recognize that these blocks are very well made, with the special sleeves built into the cylinders, but then again we've all seen the damage that is caused by an overboosted turbo. I don't want that happening to an N/A car not specifically designed to handle that much compression.

hacker-pschorr

http://www.youtube.com/watch?v=iIM7BYrNbfE
http://www.youtube.com/watch?v=EKBtHxkTbzk

Great ***** of fire!!!
http://www.youtube.com/watch?v=xCNs_pOu28A

V2Rocket

Exactly.

To quote the last video:
"Holy ****ing ****"

sweanders

Imagine something like that happening at well over 100 mph.

Stay safe Brett!

Andre Hedrick

Brett,

Have you got flight insurance for that run/dyno?

Kevin Michael

More like fire insurance. IMO nitrous is a good thing as long as it is done in moderation. I would not have it on my car but to each his own. I commend Brett on his willingness to take his car to the limit, but find another engine ready to go in before you start pushing it that far. My 3 cents.