water + electric fuel pump = problems?
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water + electric fuel pump = problems?
i'm putting an electric pump on my truck. every now and then, my truck sees some pretty deep water crossings. i was wondering how ya'll deal with water and electric accessories. i'm also putting in an electric fan. thanks in advance.
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From: Crowville Louisiana
The only thing that I have run an electric water pump on is a dragster. I don't beleive that I would want to run one on a trail or street driven truck. I would hate to be way off road and the electric pump crap out on me. Just my .02
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From: Crowville Louisiana
I guess that I am half blind. I dont know why but I thought Electric water pump.
I have seen electric fuel pumps on a lot of off road rigs. My buddies bronco has one.
I would use good terminals on the wires and put heat shrink on them.
I like electric fans for deep water because you can turn them off and not worry about tearing up a fan.
I have seen electric fuel pumps on a lot of off road rigs. My buddies bronco has one.
I would use good terminals on the wires and put heat shrink on them.
I like electric fans for deep water because you can turn them off and not worry about tearing up a fan.
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From: St George, SC I-95
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From: Tyler Co., West Virginia
Electric fuel pumps should do ok in mud and water, buddy of mine feeds a nasty 454 (sorry guys) with one. Hes the guy winching me out in my gallery with the orange s-10. Hes never had a problem with it, matter of fact its been in past builds hes used in the mud. Its a Holley with a Holley pressure regulator. Its mounted in the bed beside his fuel cell. I wouldnt worry about using one.
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Post Fiend
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From: Atlanta GA
If you are worried about it shorting out, it will not. Just mount your relay so the prongs face down and ziptie the connector and wire harness to the relay so they do not pull out from vibration.
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It is a DC circuit, and will never short out (unless the plus leg goes to ground), even if submerged.
The electric pump will continue to run even if it is under water. Problems only occur when corrosion limits conductivity after extended wet and dry periods.
Seal the connections and it will run for quite a while.
The electric pump will continue to run even if it is under water. Problems only occur when corrosion limits conductivity after extended wet and dry periods.
Seal the connections and it will run for quite a while.
Street Queen to the extr3m3
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From: Lubbock, Texas
Originally Posted by 75F350
It is a DC circuit, and will never short out (unless the plus leg goes to ground), even if submerged.
The electric pump will continue to run even if it is under water. Problems only occur when corrosion limits conductivity after extended wet and dry periods.
Seal the connections and it will run for quite a while.
The electric pump will continue to run even if it is under water. Problems only occur when corrosion limits conductivity after extended wet and dry periods.
Seal the connections and it will run for quite a while.
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Originally Posted by Truckin4life
If what you say is true then if a positivly charged cable is exposed and dunked it water, it wont travel around what ever reisitor there might be and back through a grounded cable in the same pool of water?
Not sure I completely understand that, but it sounds like you are trying to explain a common "drain" that would result by only the conductivity of the water. This conductivity is only due to the particles that are present in water. A 12VDC motor will still run this way. Corrosion is the biggest problem here, but the electric motor will still operate, even completely submerged.
While a brushless motor would be better for submerged use, one with brushes can run, and survive with the occasional dunk from normal, or not so normal off road use.
Holley blue, and red pumps are durable units, and will not have any troubles being exposed to water.
Street Queen to the extr3m3
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From: Lubbock, Texas
what i was saying is that the electric fuel pump is a load in the circut and there for has resistance, if the positive and negative terminals are underwater. Then wouldnt the current just jump from positive to negative and not run the pump or not have much juice left to power the pump. since water is an excellent conductor?
just an idea, im sure they do work completly submerged, just a thought that had crossed my head.
but on paper does what i said make since?
just an idea, im sure they do work completly submerged, just a thought that had crossed my head.
but on paper does what i said make since?
Post Fiend
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Originally Posted by Truckin4life
what i was saying is that the electric fuel pump is a load in the circut and there for has resistance, if the positive and negative terminals are underwater. Then wouldnt the current just jump from positive to negative and not run the pump or not have much juice left to power the pump. since water is an excellent conductor?
just an idea, im sure they do work completly submerged, just a thought that had crossed my head.
but on paper does what i said make since?
just an idea, im sure they do work completly submerged, just a thought that had crossed my head.
but on paper does what i said make since?
Water by itself does not carry any conductive value at all. Impurities in the water can create a conductive value, such as salt. Salt water is conductive, but still (for this topic) not a very good one. Lots of ions have to be created.
Consider that our alternators still work during a drive in the rain. Lots of water there, and they continue to work.
The same is true for electric winches. They still operate when things get a little, or even a lot wet.
Contaminating the comm. could create a problem, but this is a result of mud / dirt and such that might bridge the air gap of the stack, or the gap between the commutator itself, but again this is a contamination issue, and not directly related to water, and conductivity.
Not enough resistance in water alone to create a short large enough to prevent the motor from operating. This would require many many ions, and just not found in even salt water. Still not enough "free electrons" to make a high enough resistance value. Would require something with a greater conductivity value.