Fuel pressure line for nitrous
Fuel pressure line for nitrous
Has anyone tapped into the rubber portion of the factory fuel feed line for a nitrous install, or just bought an aftermarket fuel rail with an extra port?
On my old car, I had just used the 50psi fuel pressure hose along with a brass T, however I'm not sure that setup will work with the Evo's fuel pressure... and I can't find ANY photos of other people's installs...
On my old car, I had just used the 50psi fuel pressure hose along with a brass T, however I'm not sure that setup will work with the Evo's fuel pressure... and I can't find ANY photos of other people's installs...
I had upgraded to a Aeromotive FRP to get fuel pressure back down to stock spec, so I used the extra port on that. A 6an O-ring to 4an flare adapater, then the 4an line to my nitrous solenoid. Nice clean solution, IMO.
The idea you propose would work, but I'm not sure it's the best way to go about it. With the DSMs, you would simply convert to an line after the firewall-mounted fuel filter to the rail, and put one of many possible AN style tees or guage ports on that line. The EVO doesn't provide us with this option though. I'll have to take a look at my car to see how the stock line is setup exactly.
The idea you propose would work, but I'm not sure it's the best way to go about it. With the DSMs, you would simply convert to an line after the firewall-mounted fuel filter to the rail, and put one of many possible AN style tees or guage ports on that line. The EVO doesn't provide us with this option though. I'll have to take a look at my car to see how the stock line is setup exactly.
Thanks for the reply,
The only time I have had any experience with the rubber style line using the metal endcaps like the stock pressure hose on the evo has, was doing a V8 swap into a jeep.. the power steering pressure hose was a setup like that. And when that line was modified it made a mess lol
The only time I have had any experience with the rubber style line using the metal endcaps like the stock pressure hose on the evo has, was doing a V8 swap into a jeep.. the power steering pressure hose was a setup like that. And when that line was modified it made a mess lol
Yeah, PS lines are going to have a little more pressure than a fuel line.
I haven't had time to go out and check my car, but I seem to remember it just bein a metal line up to the firewall, then a rubber line clamped on to it. If so, that is where I would tap in. Ys are better than Ts.
I haven't had time to go out and check my car, but I seem to remember it just bein a metal line up to the firewall, then a rubber line clamped on to it. If so, that is where I would tap in. Ys are better than Ts.
Took a look at my car. There is a hard fitting between the hard line and the rubber line. I'd be willing to bet you can find an adapter (like the ones for DSMs) to AN, and convert to AN between the hardline and the rail. Then tapping into it for the nitrous fuel feed will be a no brainer. If you don't feel like arsing about with metric to AN adapters, the connection at the tank end of the hardline is just a slip on rubber hose type of joint, you can always run a 1/4" high pressure rubber line up to the engine bay. Not as clean, but it would work.
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Are you serious? Ok, I apologize..
First of all, make sure you've used fuel injection line and not regular fuel hose, big differance, the stuff I use is Goodyear fuel injection hose, costs about 5 bucks a foot!
Hopefully, that's the problem... I made that mistake on my first car, and split the hose!!
First of all, make sure you've used fuel injection line and not regular fuel hose, big differance, the stuff I use is Goodyear fuel injection hose, costs about 5 bucks a foot!
Hopefully, that's the problem... I made that mistake on my first car, and split the hose!!
Last edited by Liqquid; May 9, 2007 at 09:40 AM.
okay so far i went back out and bought the efi hose clamps and I used a tee from zex and so far no leaks!! I armed the nitrous after a few runs without it and all I hear was brrrrrrrrrppp from the exhaust end. preasure on bottle was at about 150. I take it its empty?? imputs please..


