fuel system question
Thread Starter
Burning Brakes
Joined: Oct 2004
Posts: 999
Likes: 9
From: Floyds Knobs Indiana
fuel system question
Which way is the best. Run from pump to the rails then regulator or pump to regulator then rails. I ha e had about 10 people tell me to do it one way and about 10 more the other way.
Le Mans Master
Joined: Feb 2004
Posts: 8,629
Likes: 16
From: York PA
Best to have full pump capability (volume) to the rails, then take away fuel to regulate pressure as needed after the rails
Drifting
Joined: May 2007
Posts: 1,841
Likes: 1
From: Ride the Lightning NJ
See: http://aeromotiveinc.com/tech-help/f...fi-regulators/
I’m trying to plumb my stand-alone EFI regulator properly, where do I put the regulator, before or after the fuel rail(s), and what ports do I use?
Unlike a standard or “dead-head” carb regulator, which controls pressure between itself and the carburetor inlet, a bypass regulator creates and controls pressure between itself and the pump. Therefore, the correct EFI regulator location is after the fuel rail(s) whenever possible, promoting the required fuel pressure, flow volume and velocity through the fuel rail and to the injector inlet, at all times. Most Aeromotive EFI regulators have two inlet ports, one on each side, and one bypass port, on the bottom. Either inlet may be used with a single fuel rail engine, both inlets with a dual fuel rail. Any unused inlet ports must be blocked with the appropriate port plug. The ideal flow-path is: out of the fuel pump, into one end of the rail; out the other end of the rail, into the regulator side port(s); out the regulator bottom port, back to the tank at the top. Dual rail applications should employ a Y-block to split the supply line before entering the rails, then individual lines are run from the opposite end of each rail to each inlet port on the regulator.
Thread Starter
Burning Brakes
Joined: Oct 2004
Posts: 999
Likes: 9
From: Floyds Knobs Indiana
