Dual Feed Double Pumper
- Thread starter BEATAV8
- Start date
BEATAV8
The Engine Whisperer
- Joined
- Feb 14, 2002
Agreed, it will have a relatively short life. I'll be swapping it out at least once per year, which for me is only a few thousand miles anyways.
BEATAV8
The Engine Whisperer
- Joined
- Feb 14, 2002
Naughty naughty Prasad!Oh Steve, you're such a bad boy!!!!! LOL!
Looking good, are those braded lines E85 proof? Do they have teflon coating on the inside?
Prasad
They are Jegs Pro-Flo 200. Supposed to be good with just about anything, including straight methanol.
BEATAV8
The Engine Whisperer
- Joined
- Feb 14, 2002
The factory fuel supply is on the driver side. It's gone now on my car.
The return and vent line on the passenger side are soon to be gone as well.
The supply(s) and return are on the driver side on my car now. Still setting it up though.
Routing will be just like the original supply, through the frame, around the left front spring pocket and poke out through a hole in front of the engine cradle.
BEATAV8
The Engine Whisperer
- Joined
- Feb 14, 2002
I leak checked the system tonight. Looking good. I was thinking it might have a leak somewhere after assembly but it's nice and dry.
With one pump running (either one), the system regulates to 49 PSI steady. With both pumps running, it regulates to 51 PSI steady. This is with the engine off. Seems the Accufab is capable of dumping the flow adequately with the -6 return line.
With the engine running, the pumps will be a bit stronger (more voltage) but I expect the system to still be capable of regulating either way.
With one pump running (either one), the system regulates to 49 PSI steady. With both pumps running, it regulates to 51 PSI steady. This is with the engine off. Seems the Accufab is capable of dumping the flow adequately with the -6 return line.
With the engine running, the pumps will be a bit stronger (more voltage) but I expect the system to still be capable of regulating either way.
Flyin Brian
Member
- Joined
- Jun 18, 2011
Cool! Let us know how it runs. What do you set your base fuel pressure at?
BEATAV8
The Engine Whisperer
- Joined
- Feb 14, 2002
Before the upgrade, it was at ~46-47 psi. And fuel pressure was really messy when the 2nd pump came on.
jasjamz
THS Racer
- Joined
- Sep 30, 2004
Great!! Let us know how the car feels. Don't let him out yet, just make him clean up the mess you've made and put the tools away. I need to work on mine but have other friends to help first.
BEATAV8
The Engine Whisperer
- Joined
- Feb 14, 2002
Looking pretty good for a first whack at it.... She's feeling like her old self again. Except now she's running $3 Thorntons E85 instead of $12 race gas!
Pulling like a freight train, clean fuel pressure, no knock retard at all, and plenty of room for more boost and more timing.
The new Hoosier drags couldn't hold it from 30mph. I had to bring it up to 50mph and ease into it.
These are the tires she's roughing up.
Prasad told everyone he's on vacation. But he's really polishing my shifter knob.
BEATAV8
The Engine Whisperer
- Joined
- Feb 14, 2002
Restrictions built into in the stock supply and return lines, including the single feed tube coming through the fuel header. I think it was popping the relief valves in the pumps, and bouncing the regulator at the rail. Pressure at the pumps was probably 100psi, just to get 70 to 75 at the rail.
Still using the same pumps and same regulator, just all new fuel lines. Can't say it was any of those components causing the ratty pressure.
