I have been thinking of adding a mild nitrous boost to my car (100 hp?). I don't know alot about nitrous, have never used it. I do not have enough hood clearance to put a plate under my carb without doing things I DO NOT want to do (Scoop, different air cleaner, different carb). I think a direct port setup would be overkill/ expensive and less stealth than I would like. I also do not want the bottle in the cabin, and I do not want to get rid of my spare tire.

Here are a couple of thoughts I have had; will they work?

1) Drill and tap the intake (Edelbrock Performer, non-EGR) on either side just below the carb and inject the nitrous there. This would put the nitrous in at about the same place as the plate would, but from the outside of the carb opening instead of the inside. Has anyone ever tried this? Would distribution be a problem?

2) I assume the reason nobody puts the bottle under the hood is because of the temperatures. Now, I removed my emmisions canister a while back, my cruise control does not work and I don't like cruise control anyway, so I could remove that mechanism, and I would be willing to loose my windshield washer bottle. I think this would give me plenty of room to mount a bottle and fabricate a complete insulated heat shield between it and the rest of the engine compartment. It could be open at the bottom and to the fender vent, but completely isolated from the engine compartment otherwise. Again, would this work?

Thanks for your expertise, Sensei

 

I think the main reason to not locate the bottle under the hood is the potential for a leak, which in turn could casue an explosion if the engine compartment filled with NOX and found a flame source. The plates that go under the carb are only like 3/8 - 1/2 inch right? Does this really cause a clearance issue?

 

Thanks for the response. Yes, putty on my air cleaner will compress to 1/4" when the hood closes. God bless, Sensei

 

That will work. I have seen people install the spray bar directly into their intake.

You don't want the nitrous bottle in the engine compartment for several reasons.. First - it's dangerous and second, the bottle pressure is affected by heat. If you'd have the bottle there, the nitrous pressure might become too high. The nitrous/fuel mix is very critical to work well and not damage the engine. Consistent pressure is critical for that. What's wrong mounting the bottle behind the seats?

 

Thanks for the response, I respect your opininon.

The problem is that this is my daily transportation. I drive it all the time and quite often that rear compartment is chock full of whatever stuff I happen to need that day. I was thinking that I could sufficiently isolate and ventilate that area of the engine compartment to control temperatures and be safe. God bless, Sensei

 

The gas itself is not flammable. The reason for not mounting it under the hood is the pressure of the expanding NOX liquid could rupture the bottle. It delivers more oxygen than air by breaking down at high temperatures, allowing the engine to burn more gas and air, yielding a more powerful combustion. Nitrous oxide is stored as a compressed liquid (like propane) the evaporation and expansion of liquid nitrous oxide in the intake manifold causes a drop in intake charge temperature, resulting in a denser charge, further allowing more air/fuel mixture to enter the cylinder. The lower temperature can also reduce detonation.

Its a myth perpetuated by that movie "the fast and the furious" that NOX explodes. It will put out a fire if you spray it on it.

 

Why don't you mount the bottle brackets with a quick disconnect? That way you only attach the brackets and bottle when you go to the track and remove it when you are driving on the street..

 

Make the bottle mobile. Or just suck it up and just box it in the rear area and deal....... Cause like they say.. Bottle in the engine area dont mix......GOod luck..G

 

If you are only talking about occasional use, you could get one of the smaller bottles (not the Sneaky Pete bottles, there are several sizes available) and mount it inside the storage compartment. It would be out of the way, and safer than being exposed in the passenger compartment.

 

If you are thinking about mounting a nozzle in the intake just below the carb pad then you will have distribution problems. You can only use a spray bar. I have never seen a do it yourself spray bar kit though. They are usually sold mounted on a plate.

 

If they already make a direct port nozzle setup with a nozzle placed over the intake valve in each runner, I don't see why it would be a problem to put maybe a 50 h.p. shot on each side of the carb just below the mounting pad. I would look for other places to put the bottle other than the engine compartment. I understand your methodology with heat sheilding and compartment setup but anything in the engine compartment is going to heatsoak with time. I would look to the storage compartment area and use a remote actuated solenoid for the bottle valve and purge. Just my thoughts.

 

The drivers side of the intake, on a dual plane, would be possible but trying to install a nozzle on the passenger side is difficult with the choke housing in the way. Trying to get even distribution with one nozzle supplying 4 cylinders on each side of a dual plane manifold is a chore.

 

The Nitrous itself may not explode but if you overheat the bottle and rupture the relief disc causing a release under the hood it sure won't be good for your engine to get a big snort of this with no fuel to go with it. This could cause a severe lean condition that might not look like a movie explosion but it will be expensive.

 

You're right. I didn't consider a dual plane manifold when I was thinking about it.

 

Just how do you expect this to work with a stcok ECM/Carb/Distributor?