Looking for some feedback on electric Fuel pumps. I am considering installing one my my father/son project, and I notice that most recommend mounting as close as possible to the fuel tank?
Who else is using an electric fuel pump, and can anyone offer-up some photos of how you mounted it?
I am considering using the relay and oil pressure switch setup, so that the pump would not continue to run if the engine should stall or that the key is left on, but mounting the fuel pump in the back with this setup would be a real PITA as far as wiring goes?
Let's hear it! Good, bad, ugly?
steve m said
Mar 27, 2011
Most electiric pumps need to be below level of tank to work properly, most pump just push and dont create must suck.. depends on your pump, holley pumps are noisy and need to mount with rubber isolators, I ran a A1000 pump on my drag car and mounted it to the frame back by bumper, you could see it, The tank was sumped. I wound stick with a mechanical one if it is less than 500HP,
69SSConv said
Mar 27, 2011
After doing some research, it looks like for a street car, it is best to stay with a mechanical. This car will only run about 300 hp I estimate (SBC 355).
bowtie said
Mar 28, 2011
I would stay with mechanical too at that level. I had a Holley Blue electric on one car and it was noticeable when idling, and a Carter up over the rear axle when I was carb'd in this car, also kinda noisy. My Walbro inline one I can only hear when it's running but the car hasn't started yet. Mine is on the rear crossbar and hidden by the bumper. The best for sound would be an in-tank one.
As for the oil pressure switch, definately a good idea if you go with electric.
Lost in the 60s said
Mar 28, 2011
bowtie wrote:
I would stay with mechanical too at that level. The best for sound would be an in-tank one.
As for the oil pressure switch, definitely a good idea if you go with electric.
This brings up an useful subject for me. My engine has no provision for mechanical and has an electric pump mounted in front of the tank. I removed the electric sender for oil pressure and installed a mechanical gauge. It appears I should use a T at the block and wire the sender back in to trigger a relay for the pump instead of direct wiring as I was going to do.
bowtie said
Mar 28, 2011
I don't remember specifically, but I don't think mine has a relay. Basically, once pressure is built up, it feeds power to the fuel pump. If it's been sitting more than about a day, then it has to crank a little before getting fuel. I actually like it since it's also more like a pre-lube system too.
67ss said
Mar 28, 2011
bowtie wrote:
I don't remember specifically, but I don't think mine has a relay. Basically, once pressure is built up, it feeds power to the fuel pump. If it's been sitting more than about a day, then it has to crank a little before getting fuel. I actually like it since it's also more like a pre-lube system too.
Yours has a relay and an oil pressure switch to control the fuel pump. On a carbed vehicle just an oil pressure switch is typically all you need to run the pump.
bowtie said
Mar 28, 2011
Doh! I remember that, they're on my firewall. I was remembering the carb's versions.
Lost in the 60s said
Mar 29, 2011
I talked to my electrical engineer friend last night and he agrees, we will use an oil pressure signal to power a relay. There will be other relays anyway, for the headlights to run full power, and future electric fans, so I will make a panel to hold them and the buss bar up under the left fender out of sight, like my Camaro rs headlight control.
Looking for some feedback on electric Fuel pumps. I am considering installing one my my father/son project, and I notice that most recommend mounting as close as possible to the fuel tank?
Who else is using an electric fuel pump, and can anyone offer-up some photos of how you mounted it?
I am considering using the relay and oil pressure switch setup, so that the pump would not continue to run if the engine should stall or that the key is left on, but mounting the fuel pump in the back with this setup would be a real PITA as far as wiring goes?
Let's hear it! Good, bad, ugly?
Most electiric pumps need to be below level of tank to work properly, most pump just push and dont create must suck.. depends on your pump, holley pumps are noisy and need to mount with rubber isolators, I ran a A1000 pump on my drag car and mounted it to the frame back by bumper, you could see it, The tank was sumped. I wound stick with a mechanical one if it is less than 500HP,
As for the oil pressure switch, definately a good idea if you go with electric.
Yours has a relay and an oil pressure switch to control the fuel pump. On a carbed vehicle just an oil pressure switch is typically all you need to run the pump.
Doh! I remember that, they're on my firewall. I was remembering the carb's versions.
I talked to my electrical engineer friend last night and he agrees, we will use an oil pressure signal to power a relay. There will be other relays anyway, for the headlights to run full power, and future electric fans, so I will make a panel to hold them and the buss bar up under the left fender out of sight, like my Camaro rs headlight control.