i'm lookin' at getting nitrous very soon and was wondering which one would be safer?? i'm lookin' to spray about 75 shot and was lookin' at a dry NOS system or a 75 shot NX express. which one would u recommend and why? what other accessories will i need to ease my mind?? thanks in advance...
With a 75 shot from personall experience I would suggest a wet system. When running a Nitrous set up their is an added chance of detonation. Detonation is the result of too little fuel present during combustion (lean) or too low of an octane of fuel. Too much ignition advance also causes detonation. WIth a wet kit since it mixes the feul & Nitrous together...this will lower the chance of detonation and at the same time put less stress on your feul pump and OEM FRP.
Also you have to look at the fact that when spraying the nitrous oxide raises cylinder pressure and temps. Simply put, the nitrous burns A LOT more feul (which is why it makes so much hp). It's pretty easy to see why the wet kit would help this right? If not lemme know.
Other accessories i would suggest for a 75 shot on a prelude are as followed.
Oh yeah...this doesn't mean you can't run a dry set up. I ran a dry 70 shot in my lude for over a year with little problems. That is just my suggestion and opinion.
I'm probably going to run a 50 shot dry. Would you suggest dry or wet? For a 50 shot, I think dry is fine. Also, what are 8mm wires and what do they do?
Originally posted by Cookout I'm probably going to run a 50 shot dry. Would you suggest dry or wet? For a 50 shot, I think dry is fine. Also, what are 8mm wires and what do they do?
by 8MM wires i mean spark plug wires. it just kind of a pet peeve of mine with nitrous. Aftermarket ignition isn't really something that is too neccisary with a small shot. The OEM one can handle it. BUT with fatter wires, and cold spark plugs you be able to get more out of the system. Just as when you spray your engine requires more feul, it also requires greater spark wouldn't you agree? the wires, ignition ect ect would provide the spark needed for better spark during high temp and raised cylinder conditions.
yes...a 50 shot dry would be fine but the list I mentioned up above i would stress a little more!
For a single fogger system, dry is much better, but for anything else they are all wet systems, direct port, plate kits, and the new EFI system for NOS, all wet. Honda manifolds don't distribute the fuel properly, so single fogger wet=no good
If you had a turbo setup would you dyno it? Of course! So dyno your car with a 75 shot. Every one is worryed about braking something, spend the $100 for an hour on the dyno and tune it, if only for peace of mind.
I wouldn't go 75 on stock fuel system though. The NOS kit raises your fuel pressure over i think 50% to get enough fuel in there, and thats asking alot of the stock injectors. But lots of people get away with it.
Retard timing to lower peak cylinder pressure, plugs, fuel pump and if you misfire on the dyno just close the plug gap alittle, thats the cheesy way.
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If you never plan on spraying above a 75 shot get the dry kit. If you plan on shooting more than a 75 shot get a direct port kit. If you really don't know, get a NOS dry kit(You can always upgrade to a direct port kit later). Like everyone already said get an ignition, plugs, wires, fpr, and I would recommend a Jacob's nitrous mastermind, but it's not necessary.
Originally posted by laughin2.2 If you never plan on spraying above a 75 shot get the dry kit. If you plan on shooting more than a 75 shot get a direct port kit. If you really don't know, get a NOS dry kit(You can always upgrade to a direct port kit later). Like everyone already said get an ignition, plugs, wires, fpr, and I would recommend a Jacob's nitrous mastermind, but it's not necessary.
if at all possible can u please explain why i should just get the dry kit if i never will shoot over 75? 75 shot dry is safer, more reliable, then the wet? please help...
A dry nitrous kit is safe up to a 75 shot. A direct port kit will give you better distribution than a dry kit, but there aren't distribution problems with a dry kit at just a 75 shot. You can go with a direct port kit if it will give you peace of mind, but it's not necessary.
Dry all the way. I run a 75 shot on a stock block and it is great. I really thinkl that dry is the way to go. I have heard of people running 140 shots of dry on the stock block. It is alot safer and eiser to deal with. But that is only my opinion.
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laughin2.2: Because it was dry had nothing to do with it. The blown piston rings had nothing to do with it. Dry, wet, or direct port, they still would have blown.
Originally posted by Cookout laughin2.2: Because it was dry had nothing to do with it. The blown piston rings had nothing to do with it. Dry, wet, or direct port, they still would have blown.
I beg to differ!!!! runnin a dry set up like that and if it was running lean would fry those rings pretty fast!
Originally posted by Cookout laughin2.2: Because it was dry had nothing to do with it. The blown piston rings had nothing to do with it. Dry, wet, or direct port, they still would have blown.
Go to Hondanet.org and look up a guy with the SN SD-streetracer. He's been running a 125 shot from a NOS plate kit for over two years. He is also running on a stock bottom end. Dry kits do not distribute nitrous equally to all four cylinders. If they did, you could buy a fuel pump, and fpr, and bigger injectors and run any shot that you wanted. Of course we all know(or should know) that it is not safe to jet a dry kit any higher than a 75 shot. If you spray over a 75 shot, the difference in nitrous distribution becomes great enough, that at least one cylinder will start to run lean. It's not a very hard concept. The injectors spray a given amount of fuel, the intake manifold routes extra nitrous down one of the runners, that cylinder doesn't get enough fuel, that cylinder starts to detonate, you blow the piston rings in that cylinder, and that cylinder loses compression. Now you are running on three cylinders because you are sucking in minimal amounts of nitrous, air, and fuel because of your lack of compression in the blown cylinder. Now you have your original nitrous shot going into three cylinder instead of four, and it's just a matter of time before another cylinder goes.
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Last edited by laughin2.2; 03-03-2002 at 03:02 PM.
N2O is a gas, so the distribution concerns between cylinders is not a concern. Fuel on the other hand, which I recently learned but should have realized, is not distributed equally because it is a liquid...its heavy. Like I said 4 cylinder dry manifold kits go up to a max 75hp because the stock injectors have a limit on how much fuel they can deliver because there is a limit on how high you can raise the fuel pressure and still have reliable injector opperation.
Im good I should be a mod.
Oh, and by the way, this weekend we installed my buddies dry kit on my car, we did a real butcher job, with the lines hanging underneath the car we jetted it to 75 with stock plugs, stock timing and I pumped an yellow S2000 3 cars.
It was a stupid thing to do, but I was in a crazy mood cause someone stole my emblems off my car.
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If fuel doesn't distribute properly how do you account for turbocharged Hondas with oversized injectors and massive fuel pumps? It's a known fact that Honda manifolds are biased to certain cylinders.
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