Mounting an electric fuel pump
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==Pump mounting== | ==Pump mounting== | ||
| − | Mounting an electric fuel pump directly to the vehicle's frame or underbody, etc. is not a good method for most vehicles. If you solid-mount the pump (bolt it directly to a frame member or other suitable structure of the car), it will transmit the noise and vibrations made by the pump into the sheet metal of the car and can make a pretty good racket that gets old to your ears after a while. | + | Electric pumps were designed to push fuel, not pull it. Mount the pump as low and as near to the tank as possible without putting it so low that it would get damaged by highway debris. |
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| + | Mounting an electric fuel pump '''directly''' to the vehicle's frame or underbody, etc. is not a good method for most vehicles. If you solid-mount the pump (bolt it directly to a frame member or other suitable structure of the car), it will transmit the noise and vibrations made by the pump into the sheet metal of the car and can make a pretty good racket that gets old to your ears after a while. | ||
One way to mount an electric fuel pump is to use rubber insulated muffler/exhaust pipe hangers. These are black rubber hangers that are about 3/4" thick and 1" wide and look like they may have been cut from an old truck tire. They have holes drilled in them along the length and a quarter-round metal piece riveted onto one end of the hanger that matches the exhaust pipe curvature. The metal piece can be removed and as many of these hangars can be combined to give the size needed, then bolt the pump to the hangers to isolate the noise. | One way to mount an electric fuel pump is to use rubber insulated muffler/exhaust pipe hangers. These are black rubber hangers that are about 3/4" thick and 1" wide and look like they may have been cut from an old truck tire. They have holes drilled in them along the length and a quarter-round metal piece riveted onto one end of the hanger that matches the exhaust pipe curvature. The metal piece can be removed and as many of these hangars can be combined to give the size needed, then bolt the pump to the hangers to isolate the noise. | ||
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A good pump like the Carter P4070 shown below will come with a mounting bracket suitable for most applications, Plus it usually comes with the mounting and electrical hardware. The cad plated bracket has a 90º bend in it that can be bent to fit most applications. | A good pump like the Carter P4070 shown below will come with a mounting bracket suitable for most applications, Plus it usually comes with the mounting and electrical hardware. The cad plated bracket has a 90º bend in it that can be bent to fit most applications. | ||
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If you decide to use a Holley Blue or Red pump, they come with a round clamp that grips the cylindrical body of the pump. Below are a couple of pictures of a mounting system that you could use on your application. It's somewhat flexible and protects the pump body from mechanical hazards. | If you decide to use a Holley Blue or Red pump, they come with a round clamp that grips the cylindrical body of the pump. Below are a couple of pictures of a mounting system that you could use on your application. It's somewhat flexible and protects the pump body from mechanical hazards. | ||
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| + | ==Filters== | ||
| + | It's a good idea to mount a fuel filter between the tank and the pump to keep junk out of the pump. | ||
The Holley pump and Fram filter below make a nice setup with a one-bolt mount to the body and a clamp around the fuel pump body. Easy access and a simple design make it user friendly. Notice that the fuel filter is an easy to remove/replace spin-on type. Flexible braided line eliminates most of the vibration from the pump, although the hard line used on the outlet side may transmit some vibrations. | The Holley pump and Fram filter below make a nice setup with a one-bolt mount to the body and a clamp around the fuel pump body. Easy access and a simple design make it user friendly. Notice that the fuel filter is an easy to remove/replace spin-on type. Flexible braided line eliminates most of the vibration from the pump, although the hard line used on the outlet side may transmit some vibrations. | ||
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[[Image:Mallory_fuel_pump.jpg|border|left|450px]] <br style="clear:both"/> | [[Image:Mallory_fuel_pump.jpg|border|left|450px]] <br style="clear:both"/> | ||
| + | ==Fittings== | ||
| + | Barbed or AN-type fittings can be used with flexible fuel line like braided stainless steel lines for the fuel in/out at the pump, instead of steel hard lines. Use a 2-3 inch long piece of fuel-rated rubber hose to attach the inlet and outlet hard lines to the pump to further isolate the noise and vibration produced by the pump. | ||
==Rollover protection== | ==Rollover protection== | ||
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The pump can also be wired through an oil pressure switch that will shut the pump off any time the oil pressure falls below a predetermined pressure. However this is no guarantee the pump will shut off in a rollover, etc. because the engine may remain running. So do not rely solely on such a set-up. | The pump can also be wired through an oil pressure switch that will shut the pump off any time the oil pressure falls below a predetermined pressure. However this is no guarantee the pump will shut off in a rollover, etc. because the engine may remain running. So do not rely solely on such a set-up. | ||
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| + | ==Mounting instructions on pdf== | ||
| + | *[[Media:Jegs fp install.pdf|Jegs instructions]] | ||
| + | *[[Media: Mallory inst..pdf|Mallory instructions]] | ||
[[Category:Electrical]] | [[Category:Electrical]] | ||
[[Category:Engine]] | [[Category:Engine]] | ||
[[Category:Carburetors]] | [[Category:Carburetors]] | ||
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