Part K Be the first to write a review. In Stock. Your Price. Add To Cart. Add to Wish List Create a new list. Holley offers a full line of high performance fuel pumps. These Holley electric in-tank fuel pumps have been designed to the highest quality standards to provide increased performance and fuel efficiency for most stock, turbo, and supercharged applications.
The and universal in-tank fuel pumps are intended as an ideal option for engine swaps and supports systems up to horsepower. Both pumps are rated for continuous duty service and have been tested up to 2, hours. About Holley. Tech Resources. Electric pumps push fuel much better than they can pull it. You must have the correct wire size to it. A relay is preferred. You may be getting the proper voltage to it, but not enough amps. Remember, the longer the run the more the power will drop.
Many people will scrape the area where they mount it, or even add a ground wire. However, they forget that they don't have a good ground from the body to the frame or to the engine. This will kill pumps real quick. Preferably, run a ground wire to the front. Many professional auto electricians will run ground wires from a unit to a common grounding point in an older car, just like in a fiberglass car. That way, there is no question if your ground is good, and it's just 1 extra wire Once, a buddy and me were going to a show in his '26 Buick roadster.
It was built much like a T-bucket and it had an electric fuel pump. It was wired in correctly, and grounded by screwing into the frame by the pump. We were about 50 miles out, and the pump quit What happened was the older metal of the frame simply wasn't carrying the current well enough.
The pump overheated and shut down. Fortunately, he had some extra wire and we screwed one end to the ground wire at the back and ran it to the front where we attached it to the negative side of the battery. The pump started back up after it cooled down and we were trouble-free all the way there and back. When we got home he wired it in neatly and never had a problem after that If something lets go in your engine bay like a fuel line, the engine will eventually quit.
However, if you don't have a way to automatically shut off your electric fuel pump you will keep spraying raw fuel all over your hot engine and wiring.
Also, in a crash, your pump can continue to run feeding a fire if you don't have a way to stop it. Note: Never mount an electric fuel pump in an enclosed area such as the trunk or interior space The easiest way is to use an oil pressure switch. The switch will stop the pump whenever the oil pressure in the engine goes away. So, whenever the engine is off, the pump will turn off automatically.
Some switches just do that. But how do I get the pump to run when I'm trying to start the motor and the oil pressure's not up yet? The switch will also let the pump run when you hit the starter because the engine doesn't have oil pressure yet.
One wire goes to the pump, one to the start circuit, and the other to the ignition circuit. Since you need the fuel pump back by the tank and at the same level as the fuel or lower, that usually means you're going to have a long run of wire. So, you need to have really good wiring going back to it.
Wiring that will carry enough current. Running the current through your ignition switch isn't a good idea since it's probably already overloaded, and will kill the voltage. That will kill the pump. However, it's nice for convenience. That's why a relay is really good to use. It lets the ignition switch activate the pump, while keeping the power from having to run through it. It will keep your pump alive and happy because it is getting full voltage.
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