this is our converastion. please excuse my ignorance on some of it as i know nothing about EFI
Gabe: Mark, how can I help you?
i gotcha: i have some questions about the ez efi
i gotcha: mainly the fuel pump
Gabe: I can help you with this..... What is the question
i gotcha: ok essentially im trying to figure out a way to plumb it in using the least amount of rubber line possible to avoid fuel seapage known to rubber lines
i gotcha: my factory hard line is 3/8
i gotcha:
http://www.jegs.com/i/Earls/361/165106/10002/-1
i gotcha: i had thought about using an adapter like that to connect the an line to it under the hood and to connect the fuel pump outlet under the car
i gotcha: but its only rated to 50psi
i gotcha: i was owndering the line pressure out of the pump and the line pressure on the return side
i gotcha: i have a factory 5/16 vent line which i can modify to be full flow
Gabe: Line pressure around 45.. return is going to vary..... Probably around 12-15. Usually customers just go braided and call it a day
i gotcha: right i understand
i gotcha: i was just confused of what the pressure may be since it is said that the reg should be at 43
i gotcha: but could go up to 60psi, wouldnt the inlet pressure be even higher?
Gabe: But it is only at a high pressure like that for a very short distance. As long as it can handle 40psi all the time... It can handle more for such a short distance.....
i gotcha: ?
i gotcha: sorry i am confused
Gabe: It will not see constant pressure any higher than 45
i gotcha: the pump mounts by the tank at the rear of the car and the reg would be in the engine compartment. so wouldnt that be 10+ or - feet of unregulated
i gotcha: sorry i am trying to fully understand this setup before i dive in with my wallet open
Gabe: Right, I understand..... Let's back up a step... 43 psi is the highest constant pressure that you will see. As long as it can handle that you will be ok. It may spile higher than that at times, but any set up you do with fuel lines, needs to handle 43 psi.... If it can do that I guarantee you that you will be ok]
i gotcha: hmm
i gotcha: ok just walk me through the fuel line plumbing to motor
i gotcha: the diagrams i have seen show the reg after the throttle body is this correct?
i gotcha: only reason i really ask is i dont want to run those an adapter fittings rated to 50psi max before the reg and have them not handle it, but i would like to take advantage of my factory steel lines if at all possible
i gotcha: i have heard horror stories of peoples garages reaking of fuel when they run braided in place of the factory lines
Gabe: I understand, it is a big investment...
Gabe: Look at page 8
Gabe:
http://www.fuelairspark.com/Instruction ... EZ-EFI.pdf
i gotcha: so the reg comes after the throttle body?
i gotcha: kind of confuses me, im used to a reg controlling the fuel pressure that the carb sees. not used to this stuff
Gabe: I understand my man. yes it comes after. Remember it operates off of manifold vacuum
i gotcha: honestly that doesnt help me with my understanding
i gotcha: can you explain it in more elementary terms
i gotcha: sorry to sound ignorant
Gabe: No it is ok, just a sec while i type this out..
i gotcha: thanks
Gabe: I am almost done typing... Just a sec.. I typed it in a Word program so that I can copy and paste.. DIdtnt want yo to think I left,,,, Just a sec
i gotcha: ok
Gabe: In a carb set up.. The fuel pressure is varies. Usually 6-9 at idle.... In an EFI application it is always at the amount of fuel you need. The manifold vacuum goes directly into the regulator, and determines the flow. That is why you need at least 8 inches of vacuum to operate our system..... The fuel pump keeps the constant 43 psi pushing into it. The regulator ( on the opposite side ) verifies the presssure and makes sure ( from the vacuum) that is operating where it needs to be and tunes off that. Before it goes back into the tank. It mainly pressurizes the fuel line, so it has constant flow to the injectors, and the regulator monitors it on the back side..
i gotcha: one minute to read
Gabe: Remember it has to keep constant pressure all the way around the injector. It is a little harder to exaplain through chat if you want to call me you can 1-888-0853 ext 545
i gotcha: so the reg holds back fuel to create the desired pressure essentially?
i gotcha: or do i have that wrong
Gabe: yes sir....
Gabe:
i gotcha: ah i gotcha
i gotcha: so you would feel confident that i could use those adapters in my fuel system to take advantage of my factory hard lines
Gabe: I wouldnt have a problem with it at all as long as they are in good shape.
i gotcha: it would keep a clean appearance under the car thats for sure
i gotcha: they are in very nice shape
Gabe: Feel free to call me any time if you want to talk about this system.. I have installed a couple myself.
i gotcha: and 3/8 is fine? i know thats about the diam of #6an
i gotcha: and 5/16 on the return side
Gabe: yes sir... you can run higher. But that is usually what I recommend
i gotcha: oh ok
i gotcha: um
i gotcha: lets see
i gotcha: so i shouldnt exceed that 50psi rating correct?
i gotcha: and the inline pump will do ok drawing out of the top of my factory sending unit?
Gabe: No, unless you are running close to the 550 hp mark and we have to crank up the horsepower
Gabe: Yes it will work great there
i gotcha: just as long as the pump is below bottom of the tank or the top of the tank?
i gotcha: sorry i would call but im at work right now and this is a little more suttle
Gabe: I understand.... That is why we have it
i gotcha: ok so my motor should be high 400hp 500 would be a max for sure more like an over exageration haha
i gotcha: its a 10.5:1 350 60 over
i gotcha: .060 over haha
i gotcha: Hydraulic roller tappetBasic Operating RPM Range 2,400-6,000Intake Duration at 050 inch Lift 234Exhaust Duration at 050 inch Lift 242Duration at 050 inch Lift 234 int./242 exh.Advertised Intake Duration 294Advertised Exhaust Duration 302Advertised Duration 294 int./302 exh.Intake Valve Lift with Factory Rocker Arm Ratio 0.533 in.Exhaust Valve Lift with Factory Rocker Arm Ratio 0.548 in.Valve Lift with Factory Rocker Arm Ratio 0.533 int./0.548 exh.Lobe Separation (degrees) 112Camshaft Gear Attachment 3-boltComputer-Controlled Compatible NoLifters Included YesLifter Style Hydraulic rollerValve Springs Included NoRetainers Included NoLocks Included NoValve Stem Seals Included NoTiming Chain and Gears Included NoAssembly Lubricant Included NoPushrods Included NoRocker Arms Included NoGaskets Included NoValve Springs Required YesQuantity Sold as a kit.
i gotcha: oops that went wild
i gotcha: but those are my cam specs
i gotcha: i should make the minimum 8in vacumme with the 112 lobe sep
Gabe: It is ok... I get the drift. One thing I would check though. HOw much vacuum do you have now?
i gotcha: motor is still being built
i gotcha: currently mapping out the rest of the build
Gabe: That 112 should do it....
i gotcha: i went with 112 to have enough for power brakes
Gabe: Save my email address
[email protected]. When you get ready to order, or if you need anything else
i gotcha: so im hoping it should be good for the efi
i gotcha: i got the email saved
i gotcha: what hoses do you supply?
Gabe: What is your email addresss, I will send you the full parts breakdown
i gotcha: i was looking at the fragola push lite 8000 fiber wrapped hose to finish any last plumbing if i ran out
i gotcha: oh yeah
i gotcha: its
[email protected]
Gabe: I just sent it.
i gotcha: got it
i gotcha: is it a fiber wrapped hose?
Gabe: It is
i gotcha: ok cool deal
i gotcha: im hoping this system will work well on my setup
Gabe: I see no reason why it wont
i gotcha: it looks to be interesting to say the least
i gotcha: do you guys happen to offer discounts to forums?
i gotcha: i know hughes performance offer the us guys over at
malibu racing a discount
Gabe: I can take care of you some on it..
i gotcha: oh really?
Gabe: I also ship for free....
i gotcha: what would we be looking at i suppose for the 30227
i gotcha: well thats a good word
i gotcha: the best i have seen yet is around $1800
i gotcha: 1879.95 w/ free shipping
Gabe: I definately cant go that low.... That is from a supplier that spends tons of money with us.... Mine would be $1999.99
i gotcha: oh ok
i gotcha: so i would be good on that price i listed then
i gotcha: well im going to save all this info and post some on my forum gbodyforum.com as we are having a bit of discussion on the fuel setup. if that is cool with you
Gabe: Not a problem at all
i gotcha:
viewtopic.php?f=13&t=28648&p=259791#p259791 if you care to stop by some time
i gotcha: i really appreciate your help
Gabe: Anytime!! Have a good one
i gotcha: now to find those hard line to an adapters in black
