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Old 11-10-2004, 08:17 AM
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Question Holley Blue Electric Fuel Pump

I know this is not 100% correct, but can anyone tell me the major problems with mounting a fuel pump toward the front of the car (well, at the very front)? Also is there any PROBLEM with mounting a pump "upside down"?

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Stroke of Genius

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Old 11-10-2004, 08:39 AM
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Stroke,
Electric pumps are made to "PUSH" fuel, they do not "PULL" fuel well at all. The pump will be very hard to prime (get fuel flowing from it), even if you are lucky enough to get it to prime it will lose it's prime all the time. Your fuel pressure will fluctuate dramatically and drop to zero pretty regularly. Electric pumps "MUST" have head pressure, meaning to get fed by gravity. For the best results mount the pump below the level of the fuel tank/cell, using a relay is a "MUST" if you need help on wiring a relay let me know.

NO, you shouldn't mount the pump up side down or on it's side. There are several reasons why up side down is a bad idea, I would say fire danger would be the main reason. If the pump leaks (which does happen from time to time with the Holley pmps) the fuel will run down to the eletric motor, not a good thing.

I have run electric pumps for many years and have had great success, there will be people that tell you they are noisey (some are pretty noisey) and they have had problems. The main reason anyone has a problem is because they are not installed correctly. If you don't mount it as close as possible and as low as possible to the fuel supply you WILL have problems, no doubt about it. The relay is a must, if not you are risking a fire, also he pump will not get full current.

I guess if you have a front mounted fuel cell then mounting the pump up front is fine but, that doesn't sound like the case.

Royce
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Old 11-10-2004, 11:35 AM
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Question Thanks for the help! Glass Filter after gas tank?

That all makes sense. I bought a "painless" relay , seems pretty straight forward. Now, the Fuel filter can I leave my main fuel filter upfront by the engine, and place a glass (inline) filter between the tank and the pump?

I'm apolagizing for all my ignorance upfront,
Thanks


Stroke of Genius
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Old 11-10-2004, 12:30 PM
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Stroke,
This is what this board is all about. Don't be ashamed of any question you might have. It's better to ask here and learn from others mistakes and experience.

You must run a good quality filter between the tank and the pump. Even a small piece of debris can cause an electric pump to fail. I HIGHLY suggest you do NOT use a glass filter. Buy an aluminum filter if you want an inline stlye filter (or even a plastic one). If you are going through the trouble of installing a electric pump you might as well do it right. I would suggest either a canister style filter or one of the new high flowing aluminum inline filters. Just make sure they filter and flow well.

Royce
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