NOS Kit user's. Doug? Mark? Beth?

[SASHO91]

Is the nitrous regulator suppose to freeze up?
For reference... this- http://www.drynitrous.com/3.html

I had to replace the plunger in the first solenoid as it failed, but i'm worried that it did it again.

I do get a bump in performance with the system activated, but it doesn't feel as strong as it did the first time I sprayed it with the new plunger in. Granted that could be just from the temp difference, bottle pressure etc....
I mean, it is easy to verify that the plunger is still good... However, I just figured I'd ask some of the nitrous junkies here first before I go tearing into the system again.

Also, I did call Holley... and the guy said that would be normal, but i'm not too sure he was on the same page as me.

From the design, it sounds like it should freeze (small holes and what-not), but I just wanna make sure of it.

 

[St Louis SHO]

Not to be a dick, or tell you what to do, but buy a sol. and forget about it. I dont even know what you are asking about. I don't use that block thing in that picture. I have a sol. and nozzle with 1 jet, and thats it. I'm thinking your sol itself is probably failing from the sound of what you are saying. It's getting hot and not working correctly.

James

 

[SASHO91]

I thought you were running the NOS EFI dry kit (aka, mustang kit) James... Nevermind.

I have allready replaced the plunger in the first solenoid. The solenoid itself works, however i'm not sure if the plunger has messed up again.

 

[St Louis SHO]

Nah, I just run a kit I put together with NOS stuff. Like I said, try a new sol. and see what happens, if nothing else you'll have a spare.

 

[SASHO91]

My point is.... what if the solenoid is not the problem, and it's the nitrous regulator? Then I'll have a spare solenoid, and then i'll have to buy another regulator.

 

[St Louis SHO]

you dont need a regulator, that was my whole point

 

[SASHO91]

Then how are you increasing fuel pressure?

 

[St Louis SHO]

how does the Zex kit increase fuel pressure? it dont

 

[SASHO91]

Yes it does.....

 

[St Louis SHO]

How the **** can it? Your fuel pressure regulator only does so much. At full throttle your FPR is wide open.

 

[SASHO91]

It applies pressure to the FPR... I don't know what the ZEX kit bumps pressure to but i'm sure it's somewhat related to the way that the NOS kit does it. The NOS kit uses jets (they refer to them as "fuel" jets for the FPR), see here- http://www.drynitrous.com/4.html . I'm running a 42F jet.. which bumps fuel pressure up 43 MORE PSI over what is there allready (40psi).

I do know that the Zex kit has a line that goes to the FPR, and i'm also fairly certain I have heard the zex kit users talk about the "fuel" jets as well.

 

[St Louis SHO]

Nope, you plumb 0 fuel into the zex kit, or the NOS kit. Do you have a fuel line to your NOS reg? If not your're not bumping fuel pressure 1 bit.

 

[St Louis SHO]

How the **** can you appply fuel pressure "to" the regulator? Tell me that?!?! Without extra fuel, you cannot pressurize the regulator more than it is?!?!?!?! Or am I just all F*cked up right now and 10 years of expereince with cars just ain't enough?

 

[SASHO91]

EDIT:
Okay..... first off, there is no fuel(gasoline) going to the FPR. There is nitrous going to the FPR (around 50psi) that pushes the FPR closed. This causes fuel pressure to rise to the given amount set by the "fuel" jet. The smaller the "fuel" jet the more fuel pressure you have, and the bigger the "fuel" jet the less fuel pressure you have.

 

[St Louis SHO]

What in the **** are you talking about? Fuel passes through the FPR until it tells it not to VIA vacuum. Nitrous to the FPR? Thats a new one to me!

 

[St Louis SHO]

You, my friend must be talking about your "nitrous" regulator that I don't have as far as "pressure regulator" and "Nitrous" are concerned. If that's true, then I retract my above statement, but have another to make.

 

[SASHO91]

You, my friend must be talking about your "nitrous" regulator that I don't have as far as "pressure regulator" and "Nitrous" are concerned. If that's true, then I retract my above statement, but have another to make.

 

[St Louis SHO]

WTF? My Nitrous regulator is the sol. Fuel pressure and Nitrous do not touch each other in any way. Am I wrong, stupid, or just f*cking too drunk to know what I'm talking about?

 

[SASHO91]

James..... The nitrous regulator is not a SOLENOID. Yes, I know that fuel pressure and nitrous do not touch each other. However, the nitrous pressure is used to push "down" on the FPR to increase fuel pressure. In short it blocks the way to the tank so the fuel has no where to go.

Another thing... if you don't have what I posted in my first post, why are you trying to give me advice on something you that you have no idea on how it works, let alone what it is?????? I'm not trying to sound like a dick....

 

[St Louis SHO]

I'm just trying to figure out what you're trying to say here. Nothing can regulate fuel pressure except vacuum. How can the NOS regulator "push down" on the fuel pressure regulator to increase fuel pressure? Once WOT is achieved, fuel pressure is MAXED no matter what you do. If you have NO fuel line linked to the NOS regulator, you are achieving nothing in reguards to fuel pressure.

On the note you posted about how I have no idea how it works, NOS will not freeze, it will just make the air charge much cooler (going in) than what it is static. If the air temp is cooler, you should see more gain in HP. If you do not "feel" it, maybe you are used to it. I have plenty of good advice. I am sorry I am not in Texas, but I am on a forum 1k miles away from your car, and cannot see/interpret what you are telling me through a forum.

My bad


/thread