How safe is nitrous
 

I'm trying to figure out how safe nitrous is. I'm thinking about running it on my 496 maybe around a 100 shot. I get nervous I might damage My engine. What are your opinions?

Here is the general scenario. 100 hp is most likely pretty safe. It feels good the first few times, then it seems to need the 150 jetting. Then you make a few changes to safely run that set up and the temptation is to do 200. I suggest to everyone that they need to build for the spray...

most NOS boo-boos fall between inadequate fuel supply or failure to pull out proper timing...don't get me wrong many other things can go wrong but these are the TOP 2

Just make sure you have enough fuel pump to supply the additional fuel, have full throttle and fuel pressure safety switches, and keep an eye on bottle pressure. 100 hp should be fine. RPM will kill it before the nitrous will, so make sure your safe there....

Do you have to increase your fuel pressure,
right now im running at 7.5 psi.

Buy a kit, right out of the box, and follow the instructions.

This isn't new, nor is it hard.

http://www.nitrousexpress.com/Instru.../carbplate.pdf

http://www.holley.com/TechService/FAQ.asp?category=NOS

He is dead on its not hard, I knew nothing about Nitrous a few years ago purchased a kit from NX very easy install instructions and works good.

I think this has gotten a LOT of guys in trouble before. :D Oh I guess that is something different.

Curtis

Excellent tip here..

Tuned right,proper timing,octane and fuel pressure,it is completely safe.Don't spray more than your piston ring end gaps are setup for(learned that the hard way :( )And ALWAYS run a safety/scondary solenoid if you are planning to use a progressive controller.When I drove my Olds in high school I had a 175 shot on a 396 with Keith Black hyper pistons and sealed power plasma rings.I would literally go thru 2 or 3 10 lb bottles per weekend on the street using 93 octane pump gas.Did that for about a year straight,then cut back to 1-2 bottles a week for the next year and a half.Never one single problem.Used just a snap switch to activate,simple.I used good fuel filters and nitrous filters in front of my solenoids and cleaned them regularly.You'd be surprised trash what will come out of a nitrous bottle!!And USE A FUEL PRESSURE SAFETY SWITCH!!!It is safe and reliable if you keep it in good working order.Any setup is only as reliable as the man who tunes it.Don't cut corners and you'll be fine.Have fun!!!

P.S. Don't use it on the street,that was stupid...fun :D ...but stupid.

Thats great advice!!! Ask as many questions as you need to. Everyone that is knowledgable with it will tell you the do's and dont's.

The relative safety of a nitrous system is dependent more on the operator/tuner than the nitrous itself.....attention to detail is very important, if you pay attention to what is going on with the system and your engine, and you have a proper procedure for turning on, purging, using, and turning off your system the need for "safety" systems can be kept to a minimum....If you want the system to be fool proof then the safety systems will need to be numerous. At the power level you are talking about it is possible to build a system that will not hurt the motor no matter what happens, who tunes it, or just about anything else....it just will not activate if everything is not within safe parameters....expensive and not necessary. Don't want to go on and on here if you don't care, but if you have specific questions I will be glad to try and address them, and if I don't have the answer someone here should.

A BIG cause of engine damage is being to FAT with the fuel Talked to guys that have had ring lands melt and etc.... from to much fuel!!!! This is no B.S. there are nitrous forums you can get on and read and post questions on this and any other thoughts you have!! I did!!!!!! Learned a HELL of a lot from this!!! Nitrous is a great power adder, I cant wait to get at it .I bought a SPEEDTECH plate system to start out with.Their booklet that comes with the systemtells EVERYTHING you need to do to make it work and be safe for the motor!!! A tool everyone needs is a nitrous flow guage to set the fuel pressure for the nitrous sytem!!!! You also MUST seperate the fuel systems on a fuel log if you run any real amout of nitrous thru the motor. 100 hp is prolly ok without this split fuel system.All I am trying to do is tell Some of what Ive learned.. Sorry to go on and on but I feel its important David. p s -ask questions of who you buy from they'll be glad to help !! PM me ILL HELP and wont give any false info out !!!!

also talk with the manufacturer they would be of utmost helpful. id say 7.5 pounds of pressure to the motor is about .5-.75 too much.nos told me to set spray gasoline pressure to 5.75 to 6 lbs pressure for the gas selenoids. if you run more pressure youll put more fuel in on spray...so id say set your motor to run at about 6.5 lbs pressure and that should be good enough for the nitrous side too if your using same regulater for the nitrous system,but some people run two regulators one for motor and one for nitrous system.i am and now in hindsight wished i would of just bought one and ran nitrous along with motor to save a few bucks and easier installation.oh well

If you will read the literature on most nitrous kit, all kits are designed to run with 6 lbs fuel pressure. any variance from the manufactures design will cause problems.

The biggest problem is to fat with the fuel or NOS? Just curious, I'm going to add 100-150HP ONLY to my motor and just getting all the info I can. What ring gaps would you recommend? This will only be used on the big end!!

"The biggest problem is to fat with the fuel or NOS? Just curious, I'm going to add 100-150HP ONLY to my motor and just getting all the info I can. What ring gaps would you recommend? This will only be used on the big end!!"

If your only going to run this power level, nothing to get all freaked out about, no need to file fit rings or anything fancy just be safe have the proper fuel pressure ( 6.5 psi) and take out about 10 degrees timing and you'll be fine.
Goodluck, Cp

Hey Charles,
Total seal recommends bore and file fit ring gap per application.

http://www.totalseal.com/TechPage.as...plessPistRings

Thanks zip, good read.

I was just saying that theres no need to get all wigged out over a 100 to 150 shot, sure it will help file fitting the rings per application which will reduce blow-by and combustion chamber contamination.

But on the flip side of overkill I've put 150 shot on a high mileage stock 5.0 mustang and ran it for years with no problems. JMO>Cp

Thanks!!! This is only necessary to pull high gear on the big end (boat deal). Motor is a 555CI Pontiac with .024" on the top and second rings.

10 degrees of timing, serious? I've read where only 1-2 is necessary, are you guys actual recommending that much?

For 100 to 200 shot you will be fine with 7.5 of fuel pressure. Just take 4 out for every hundred of spray timing wise and have fun.