So, I started trying to mock up my fuel cell and it hangs pretty low in reference to the frame. I was told a long time ago (caraburated days) the pump needs to be lower than the outlet of the fuel cell. Now, I wanted to mount the pump to the rail which is appx. 5-8 inches above the cell outlet. It wouldn't be a direct 90, but not sure the fluid would get to the pump. Do the fuel injected pumps create enough suction to get the fuel to it or, am I just gonna have to figure a way to mount it on the cell and deal with it? It's a walboro 255 and using -8 line to the pump.

 

Its possible, but its goin to work it harder id imagine.. and if the level gets low, after you turn the pump off the fuel could drain back and might have a problem trying to get it to prime??

 

Well, I'm figuring since the regulator is right next to the pump, the pump would prime ok, pushing the air thought the return port. I am however worried about the pump, possibly cavitating. I'm curious if it would have enough suction to break open a check valve......that way it wouldn't let the fuel drain back to the cell when the pump is turned off.

 

heres mine and i dont have any issues :

 

Good to hear. How long you been running it like that? Where you running the regulator?

 

on passenger side firewall, i tried to put it on the rails bout with my intake it was virtually impossible, been running it for a few months now! it primes quick, the pump shown is the jays racing upgrade of the bosch 340 though.

 

so your using the bosch pump still??? Did you ever run the walboro like this? by the way, beutiful pic

Here is how far i have to go. it is a little misleading due to the panoramic pic from the gopro. trying to put the pump on the passenger frame rail.

 

i personally dont see a issue regardless, as long as youre as close to the tank as possible, you wanna keep the feed line to tank from pump as short as possible. before i had a internal walbro ran on stock fuel lines, never used a walbro external. i think if youre with in a couple feet from pump to feed line on fuel cell you'll be fine, but thats just me.

thanks, i just need to install the standalone and i should be done under the hood for now

 

Ok. Cool. Well I'm gonna go a little overkill making the mount/cage for the tank so, I think I'll make a spot to mount the pump and regulator next to the tank instead of the frame rail.

Why didn't you put the FPR back near the tank?

 

there you go, solve your own question

absolute pressure at the rails, if the FPR is at the rails and youre reading proper pressure then you know you have enough fuel, if youre back towards the tank you could end up with fuel pressure problems of dropping PSI before it hits the rail.wanna keep the lease amount of fuel pressure drop going into the rails