SniveTroll Posted July 22, 2012 Report Share Posted July 22, 2012 im going to install one. now with an aftermarket fuel system would you install before or after regulator.before - absolute pump pressureat the regulator - pressure at the rails. Please discuss. do not be skimpy with opinions nor details. Link to comment Share on other sites More sharing options...
OnyxCobra Posted July 22, 2012 Report Share Posted July 22, 2012 Seems like you'd want to know the pressure that the engine is getting, what good would the other number do you? Link to comment Share on other sites More sharing options...
SniveTroll Posted July 22, 2012 Author Report Share Posted July 22, 2012 when folks dyno tune they worry about pump duty cycle(make sure they have enough pump). then often have an external gauge for base fuel pressure. 40psi vac unplugged. 36-38psi vac plugged in at idle. At WOT Delta Differential pressuring between the fuel rails to maintain feeding.@ WOT you see it go from 39-40 psi to 21-26 N/A. (only experience my previous tuner explained it) Without exposing myself to fuel and having an allergic reaction, im trying to get opinions. Link to comment Share on other sites More sharing options...
Craig Posted July 22, 2012 Report Share Posted July 22, 2012 I put a Tee on the shradder valve of the fuel rails. one side goes to a fuel pressure safety switch for the nitrous, the other to the sending unit for my auto meter fuel pressure gauge. you want to know rail pressure when you are in the cab. if you pump isnt keeping up it will still show on the gauge at the rails. are you pushing the limits of your pump with your setup? Link to comment Share on other sites More sharing options...
Alscobra Posted July 22, 2012 Report Share Posted July 22, 2012 Regulator opens up to relieve excess fuel pressure. WOT engine vacuum decreases closing the regulator and shutting off most of the return (full fuel pressure if you have enough pump). Adjustable pressure regulator with a bigger pump will ensure full fuel pressure at all times. Fuel trim calculates injector pulse width and rich lean conditions. I wouldn't worry about fuel pressure as long as she doesn't start going lean. Extra duty pump never hurts if you have a regulator and return line. Unfortunately I have no return line and blow frps sensors sometimes. Link to comment Share on other sites More sharing options...
SniveTroll Posted July 22, 2012 Author Report Share Posted July 22, 2012 as i stated i have an aftermarket fuel system. i have an A1000 fuel system and CPR fuel rails without the common schrader valve. hopefully someone sees the image. Link to comment Share on other sites More sharing options...
SniveTroll Posted July 22, 2012 Author Report Share Posted July 22, 2012 mine is return style for the 96. -10 feed to Y-block. -6 or 8 to each rail. -6 for return. Link to comment Share on other sites More sharing options...
Alscobra Posted July 22, 2012 Report Share Posted July 22, 2012 Not sure what you mean by -10 or -6. But I can't see the pic. Link to comment Share on other sites More sharing options...
SniveTroll Posted July 22, 2012 Author Report Share Posted July 22, 2012 imageshack fails me. http://imageshack.us/photo/my-images/197/img0219zf.jpg/ Link to comment Share on other sites More sharing options...
Craig Posted July 22, 2012 Report Share Posted July 22, 2012 no go on the image. put the sender any were you want on the engine side of the reg. and call it good. Link to comment Share on other sites More sharing options...
Alscobra Posted July 22, 2012 Report Share Posted July 22, 2012 no go on the image. put the sender any were you want on the engine side of the reg. and call it good.Yup. Sounds good. Link to comment Share on other sites More sharing options...
SniveTroll Posted July 22, 2012 Author Report Share Posted July 22, 2012 then that would be anywhere after pump on mine. interesting. Link to comment Share on other sites More sharing options...
Alscobra Posted July 22, 2012 Report Share Posted July 22, 2012 then that would be anywhere after pump on mine. interesting.Where's the regulator? Link to comment Share on other sites More sharing options...
Craig Posted July 22, 2012 Report Share Posted July 22, 2012 your reg. does not intercept the fuel path to the motor? Link to comment Share on other sites More sharing options...
SniveTroll Posted July 22, 2012 Author Report Share Posted July 22, 2012 no.. my regulator is on the tail end of the rails. after each rail is dual(each rail) an -8 fitting to 1 regulator. my return line is a -6 from reg to tank. its an old Anderson fuel diagram spec. Link to comment Share on other sites More sharing options...
Alscobra Posted July 22, 2012 Report Share Posted July 22, 2012 So if I'm picturing it right, the sender should be near the rail and before the regulator. Link to comment Share on other sites More sharing options...
SniveTroll Posted July 22, 2012 Author Report Share Posted July 22, 2012 or at the y-block. if i rearrange my regulator to NMRA rulebook on the regulator itself. Link to comment Share on other sites More sharing options...
Craig Posted July 22, 2012 Report Share Posted July 22, 2012 (edited) edit...i get what you are saying now go with al on this one Edited July 22, 2012 by Craig Link to comment Share on other sites More sharing options...
Craig Posted July 22, 2012 Report Share Posted July 22, 2012 double post Link to comment Share on other sites More sharing options...
SniveTroll Posted July 22, 2012 Author Report Share Posted July 22, 2012 yes. that is what im stating. Link to comment Share on other sites More sharing options...
SniveTroll Posted July 22, 2012 Author Report Share Posted July 22, 2012 Link to comment Share on other sites More sharing options...
Alscobra Posted July 22, 2012 Report Share Posted July 22, 2012 Just depends on the setup. I've seen them just make a straight loop with the reg on the backside of the injectors. If the rail deadends then the reg is gonna be before the rail or at the rail. Link to comment Share on other sites More sharing options...
Craig Posted July 22, 2012 Report Share Posted July 22, 2012 y block feeds both sides of rail correct? shouldnt matter if it is before or after the rails the way you have it set up Link to comment Share on other sites More sharing options...
Craig Posted July 22, 2012 Report Share Posted July 22, 2012 ok there is the pic. you will have equal pressure from your fuel pump all the way up to your regulator. in this setup you reg is after the engine. technically you can put the sender anywhere in between and it should not matter. your best choices are on the rail side of the reg. or the y block like you said. either will do fine whatever floats your boat, and is a cleaner job. Link to comment Share on other sites More sharing options...
Alscobra Posted July 22, 2012 Report Share Posted July 22, 2012 I really need a drawing of the way it runs. The Y feeds both rails individually. From the front on the rail or the back. Where does the hose on the other end of the rail go? Diagram or quick drawing will help. Link to comment Share on other sites More sharing options...
SniveTroll Posted July 22, 2012 Author Report Share Posted July 22, 2012 i am tired of the ongoing spaghetti strings of wires. ive cleaned up alot. Link to comment Share on other sites More sharing options...
SniveTroll Posted July 22, 2012 Author Report Share Posted July 22, 2012 in all honesty i knew what i was going to do. however, im trying to build tech for incoming viewers. i wanna keep this an open discussion. Link to comment Share on other sites More sharing options...
Alscobra Posted July 22, 2012 Report Share Posted July 22, 2012 Regardless it's looking pretty good. I miss having a project car. Need to build another fox. Link to comment Share on other sites More sharing options...
Craig Posted July 22, 2012 Report Share Posted July 22, 2012 (edited) with the reg on the return side of your fuel rails as it looks and sounds like it is. your entire fuel system is under the same pressure with the exception of your return line. you could tap in any were you wanted. there was a little confusion and back and forth that might be hard to follow when people read this but that is pretty much the bottom line. there is nothing to change the pressure between your reg and pump. any were along that line will be fine.edit: i need to go to bed i have had to edit every one of these wording things exactly backwards of what i meant Edited July 22, 2012 by Craig Link to comment Share on other sites More sharing options...
SniveTroll Posted July 22, 2012 Author Report Share Posted July 22, 2012 mine is a 96 with COP conversion and A1000 Fuel system. im always testing parts. 1. i tested and using the A1000 fuel system as aeromotive said to. theres a few flaws.2. i tested ebay COP on the dyno and street Fast wideband. whatever brand i found does work well. Motorcraft is still better. 3. suspension.. Still tuning. i like to have fun and push the envelope a little on the street. until i have it to a science it wont be on the street yet. Link to comment Share on other sites More sharing options...
Alscobra Posted July 22, 2012 Report Share Posted July 22, 2012 Yeah the bad part about my car is that my tuner has me by the balls. Anything I do to my car I have to go back and see the tuner. Dammitt! Link to comment Share on other sites More sharing options...
SniveTroll Posted July 22, 2012 Author Report Share Posted July 22, 2012 fair enough Link to comment Share on other sites More sharing options...
SniveTroll Posted July 22, 2012 Author Report Share Posted July 22, 2012 Link to comment Share on other sites More sharing options...
Alscobra Posted July 22, 2012 Report Share Posted July 22, 2012 Two or three fittings in the reg? Link to comment Share on other sites More sharing options...
SniveTroll Posted July 22, 2012 Author Report Share Posted July 22, 2012 three. Link to comment Share on other sites More sharing options...
SniveTroll Posted July 22, 2012 Author Report Share Posted July 22, 2012 http://www.stage3motorsports.com/product/A13101/Aeromotive-A1000-Injected-Bypass-Regulator.html?meta=GBASE&metacpg=A13101&utm_source=gbase&utm_medium=CPC&utm_content=&utm_campaign=A13101?meta=GAW&gclid=CKzw5pDarLECFQFx4Aod_AQA4g Link to comment Share on other sites More sharing options...
Alscobra Posted July 22, 2012 Report Share Posted July 22, 2012 Damm. Gonna have to T off of one side between the reg and the rail. Just be sure the T doesn't cause any restriction because it may cause uneven pressure between the sides. Personally I prefer a two fitting reg and Y them to the reg in one line. Shouldn't be a big problem either way you run it as long as it doesn't restrict flow. Link to comment Share on other sites More sharing options...
SniveTroll Posted July 22, 2012 Author Report Share Posted July 22, 2012 ellaborate please? Link to comment Share on other sites More sharing options...
Craig Posted July 22, 2012 Report Share Posted July 22, 2012 (edited) he is saying to take one of the lines from rail to reg and put you sender there. tee the line so fuel passes throw the 180* portion of the tee with the sender on the 90* plane. but if the tee restricts the fuel flow it will only be restricting it on one rail and not the other.my thinking on this is.... will it matter? this will be some decent tech for the thread. lets say that you do restrict one line slightly. That should not increase pressure that would be a decrease in volume. I am still thinking it does not matter were the sender goes on your setup in theory as long as it is some were in between the reg and pump. I have never done a setup like this i have always run the reg before the motor so I could be way off base here but it makes sense to me. I am still with Al tho. I have always run, and always see the sender between the reg and rails. with your setup I think the easiest way might be to tee in before your y block tho for a clean install. esp. because there is already a hole in the firewall right there ( i say right there assuming your y block is on the pass side strut tower as it seems to be in the pic) to run your wires right into the cockpit. i dont see that it would make a difference either way you do it. Edited July 22, 2012 by Craig Link to comment Share on other sites More sharing options...
Forcefedhatch Posted July 22, 2012 Report Share Posted July 22, 2012 All this placement lingo, my sending unit is just in the Schader valve location..Sent from my iPhone Link to comment Share on other sites More sharing options...
