I want to run a simple mr gasket 7psi pump.. I read that a electric pump should be mounted lower than the tank fuel line.. I have a 19gal. mustang tank in my car and there is no spot to mount lower, even the frame rail is higher.. The place I want to mount it is just above the sending unit on the bracket the tank straps mount to.. Will the pump work ok if it is pulling the fuel up hill to the pump ? It will have 12" of fuel line between the sending unit and pump... If I build a bracket to make it lower, I have a fear it will be way to low and could snag on something...
They are pushers, in theory, but really, think about it, it is going to have to pull from somewhere if it is going to push... If it is blowing the fuel forward, it has to have at least a little "suck". Try it on the frame rail and I bet it will work just fine. Wimpy fuel pump, though... For a little less altitude, I did this...and note the rubber grommets to reduce vibrations and quiet it down.
Ditto. Which pump is it? These things are like welders in that it's usually better to have a bit more duty cycle ratings than required. Helps them run cooler and last longer when they don't work as hard.
the pump wont be able to supply as much fuel if its above the fuel level in the tank. thats why they want it as low as possible. build a drop down bracket of some sort to drop the pump to where its at least level with the bottom of the tank. those mr gasket pumps are pretty weak to begin with and to put it above the fuel level in the tank will make it even weaker. if its above the fuel level it may not even be able to prime it self.
The problem I had when mine was mounted just a few inches higher on the frame rail was that it would cavitate when I got down around 3/8 or 1/4 tank of gas. It would start to make all kinds of noise, which was fine by me...reminded me to turn into a gas station soon. But it could not have been all that great for the pump.
I have always read where an electric pump should be mounted below the tank outlet so, when I built my fuel cell can/cradle, I made the brackets for the pump and filter so the pump will be about level with the outlet in the cell - a drop bracket on a stock frame rail might be the way to go
While efficiency can certainly be improved by low mounting the pump.. many guys still have pumps located in their trunks too. I personally won't do it with rear battery locations any more due to potentially faster kabooms.. but the pumps do still work well enough in the higher location.
I've also seen pumps mounted right behind the cell/tank right inside of the rear valence - talk about the first thing that is going to get hit in a rear end collision
I've got mine mounted directly to the cell.... I dont think height is as critical as people tend to believe
I saw a build in a Hot rod mag. that mounted the E-fuel pump (mr. Gasket ) to the fire wall... when I ran in one of my EFI setups I had mine mounted to front inner fender.
My MrGasket 12S is mounted to the frame rail forward of the rearend. It has never failed to keep the three-twos supplied with fuel. It's mounting is about even with the bottom of the stock tank.
this is what i did for my fuel pump / filters, its mounted horizontally in front of the fuel tank, i have 3" or so brackets i welded that have it almost level with the bottom of the tank, its isolated for vibration and noise as well using dual isolaters . https://scontent-b.xx.fbcdn.net/hphotos-frc3/t1.0-9/305060_2401025268463_576552092_n.jpg
I have mine in my trunk (front battery) and have no issues at all with it. It's a Holley red pump I also have the fuel pump on a switch though. Just in case I need to shut it off in an emergency. Probably not a bad idea wherever you decide to mount it.
