Re: Efi fuel system setup question
[Re: AndyF]
#2419704
12/17/17 01:34 AM
12/17/17 01:34 AM
|
Joined: Nov 2006
Posts: 840 southern Idaho
moparcyco
OP
super stock
|
OP
super stock
Joined: Nov 2006
Posts: 840
southern Idaho
|
Yes that should work. Is there a return line that hooks to that regulator? On my Duster I'm putting the regulator in the back of the car by the fuel tank so the return line is super short. Then I just run the high pressure line up to the front and dead head the rails like you are planning to do.
You'll probably want to put your fuel pressure sensor at the end of the last rail up by the compressor. That way you'll know what the fuel pressure is at the end of the system. Yes it has a return its on the bottom on the regulator. Not sure about fuel pressure sensor? Do you mean a pressure gauge? the regulator has a port for one but I can't decide where to put it. The engine bay is tight I thought about putting it in the back like you are that might be my best bet. Should I drill and tap the end of the rail for a gauge? Thanks
|
|
|
Re: Efi fuel system setup question
[Re: moparcyco]
#2420091
12/17/17 11:46 PM
12/17/17 11:46 PM
|
Joined: Jan 2006
Posts: 132 Kingman, Az
Scojodak
member
|
member
Joined: Jan 2006
Posts: 132
Kingman, Az
|
There's "tight 90°" an/o-ring elbows out there for the end of that rail.
Dakota for life!
|
|
|
Re: Efi fuel system setup question
[Re: moparcyco]
#2420122
12/18/17 01:07 AM
12/18/17 01:07 AM
|
Joined: Nov 2006
Posts: 2,255 IL
furious70
top fuel
|
top fuel
Joined: Nov 2006
Posts: 2,255
IL
|
I have my regular on the back of the pass side rail, cross over in the front, and my pressure isolator for my interior gauge on the back of the driver's side rail. Never had any issues.
70 Sport Fury 68 Charger 69 Coronet 72 RR
|
|
|
Re: Efi fuel system setup question
[Re: DaytonaTurbo]
#2420904
12/19/17 01:15 PM
12/19/17 01:15 PM
|
Joined: Nov 2006
Posts: 2,255 IL
furious70
top fuel
|
top fuel
Joined: Nov 2006
Posts: 2,255
IL
|
I did my efi conversion like a lot of newer vehicles with the regulator back by the tank. My first though was the fuel needs to flow through the whole system but so many modern vehicles do it so it can't work that bad. I used the factory vapor line as the return but when/if I EFI my Coronet I'll likely do the same, no reason to run all the extra line and run the fuel back and forth
70 Sport Fury 68 Charger 69 Coronet 72 RR
|
|
|
Re: Efi fuel system setup question
[Re: moparcyco]
#2420928
12/19/17 02:06 PM
12/19/17 02:06 PM
|
Joined: Jun 2007
Posts: 2,432 NorCal
RylisPro
top fuel
|
top fuel
Joined: Jun 2007
Posts: 2,432
NorCal
|
Here is my engine bay is setup from a year ago. Its the same now minus the wiper motor. My first EFI system as well and has worked flawlessly on several track days, thousands of miles, and even in crawling traffic on hot days. I run Aeromotive but do not recommend their stuff since finding out a bunch of current products are Made in China. I studied their diagrams and built my full return system off that. A benefit is that it keeps the fuel system cooler when road racing. https://www.aeromotiveinc.com/fuel-cell-diagrams/I run an ATL fuel cell with an internal 255 Walbro pump to a 10 micron then 100 micron filters. I use XRP stainless braid underneath the car along the factory fuel line path to a one way valve to my Y block. From there it splits to the two fuel rails. There is a bracket that supports the regulator. I run XRP Race Crimp stuff as its easy to measure and install, PTFE lined to use with all fuels.
|
|
|
Re: Efi fuel system setup question
[Re: RylisPro]
#2420963
12/19/17 03:22 PM
12/19/17 03:22 PM
|
Joined: Aug 2003
Posts: 43,112 Bend,OR USA
Cab_Burge
I Win
|
I Win
Joined: Aug 2003
Posts: 43,112
Bend,OR USA
|
I was told by Rich at Fastman EFI to not dead end fuel to either fuel rail, it needs to circulate back to the tank through both rails so one side of the motor doesn't see different fuel pressure than the other I'm plumbing a hemi motor for dyno testing now and will rearrange the fuel system and wiring after this once the motor is in the car. I'm routing the fuel feed from the pump through one side fuel rail and then looping it on the back side to the other side and then back through the regulator and then return it to the cell Lots of fun joining this generation of fuel controls Better now than later
Last edited by Cab_Burge; 12/19/17 03:24 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
|
|
|
Re: Efi fuel system setup question
[Re: moparcyco]
#2421076
12/19/17 07:05 PM
12/19/17 07:05 PM
|
Joined: Nov 2006
Posts: 2,255 IL
furious70
top fuel
|
top fuel
Joined: Nov 2006
Posts: 2,255
IL
|
Don't know anymore than my own experience but mine has run fine and with a eddy rpm perf intake I've managed to have 8 spark plugs that are virtually identical over 8 years of street driving.
70 Sport Fury 68 Charger 69 Coronet 72 RR
|
|
|
Re: Efi fuel system setup question
[Re: Mopar_Rich]
#2421632
12/20/17 10:36 PM
12/20/17 10:36 PM
|
Joined: Nov 2004
Posts: 25,050 Texas
GoodysGotaCuda
5.7L Hemi, 6spd
|
5.7L Hemi, 6spd
Joined: Nov 2004
Posts: 25,050
Texas
|
You want to minimize any "dead heading" if possible. With a dead headed fuel system an air bubble (from cavitation or a low fuel tank level) needs to flushed out through the injector which can cause a rough spot. Also, full flow plumbing keeps all the fuel at the same temperature. It's just a better way to go. ...works for every factory Hemi since 2003. (and many other OEMs) Their pumps may be pwm to help with temperature, but that won't help the bubble problem.
|
|
|
|
|