i have the nitrous works bottle, it has the **** and the outlet and then on top theres a spot for a blowdown tube and on the side theres a spot for a gauge. im getting the dynotune nitrous pressure gauge, which has a 1/8" NPT fitting, that should screw right into my bottle correct? i have a small plug in there now that came with it.

also, the fuel pressure gauge has a sending unit with the same 1/8" male NPT fitting, that will screw directly into a gauge adapter which will screw into the test port on the fuel rail, while the other end goes to my fuel solenoid.

am i correct with all this?

 

The first part sounds correct to me. I'm a little confused with the next one though, are you referring to the FPSS manifold by chance? In that case, both ends will be AN style which will allow you to run it in series in the fuel line and it will have one or two NPT ports to mount a fuel pressure safety switch and another accessory of your choice.

 

both sounds fine...

 

hmmm. now im confused cause i went and looked at my bottle. it seems as tho the gauge hole is bigger than 1/8" NPT. what else would it be? i have the fuel rail adapater to screw the line into the schrader valve and it seems much smaller then the gauge hole. does anyone know what size this hole should be and also what size goes into the fuel rail?

 

Not real sure what the Nitrous Works bottle has but the 1/8 NPT should be approx 3/8" in diameter.

To hook a FPSS to the fuel rail you will need a -4 Manifold
http://www.nitrousoutlet.com/catalog...product_id=368

The female end will screw onto the schrader valve the male end will be the AN line and the FPSS/sending unit will go into the 1/8 NPT port

 

the 1/8" NPT is that female port on the side of that fitting correct? since ill be running a sending unit and FPSS, ill need 2 locations to pull from, does that manifold have 2 or just the one, like shown. it does so multiple but obviously the pic is only showing one. thanks for the help, you nitrous dealers are some of the most informative/helpful guys on the boards today.

 

Just make sure when you get the manifold you specify that you need a dual port unit....and it will have a port on opposing sides

 

alright, thats what i wanted to hear. thanks alot. a 90* elbow wont be necessary to turn the manifold to the side inside of going directly into the cowl panel from the test port will it?

 

Personally, I would avoid screwing the manifold directly to the Schrader valve. The valve boss is only swaged onto the hardline, and can be easilly damaged. I would think having the manifold sticking straight up, then attaching a hose to it would risk damage when the engine torques over and the hose hits the cowl.

My preferrence is to use the NOS 17535 -4AN 90-deg swivel fitting on the Schrader valve (see photo below). The 90-degrees gets it pointed to the side rather than straight up, and the swivel feature allows you to "aim" the fitting in any direction, without the risk of over-tightening the connection. Run a short -4AN hose from the swivel fitting to the gauge manifold.

http://members.aol.com/Fredrick518/Photos/bkofint.jpg

 

http://www.jegs.com/webapp/wcs/store...10002_23751_-1

ill only need the first one shown right? would there be a problem running the manifold directly off that 90* elbow as opposed to running a short -4an line like u said? id like to keep it as simple as possible but still do it right.

 

anybody know if i can run the manifold right off the elbow?

 

Can you - yes. Should you - I personally don't think so. You don't want the extra weight cantilevered off the Schrader valve. The "valve" is only "swaged" onto the hardline - not welded, not brazed, just pressed. Its easy enough to break it right off the line simply from over-tighening the fitting. I have my fuel pressure tap welded directly to the fuel rail.