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Old 03-06-2008, 03:30 AM
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fuel cell

when hookig up one of the plastic type fuel cells do u have to hook up the return line ? the stock fuel pump has this line running back to the stock tank but the Holley electric fuel pump that i'm going to use just has an in and out hook up no return line hookup

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Old 03-06-2008, 07:27 AM
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You don't have to hook up the return line. If the return line on the fuel cell is on top, you can use it as a vent instead. That is how mine is setup. If you are planning on racing and running a specfic class, you need to check the rule book to see what the stipulations are for this.
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Old 03-06-2008, 08:35 AM
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It also depends upon the type of fuel pressure regulator you have, it the Holley pump is internally regulated, no problem. If it's a constant pressure pump, such as the BG 220HR I'm running, using the BG regulator, yes, the return line is required.
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Old 03-06-2008, 12:32 PM
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Quote:
Originally Posted by wayneo
when hookig up one of the plastic type fuel cells do u have to hook up the return line ? the stock fuel pump has this line running back to the stock tank but the Holley electric fuel pump that i'm going to use just has an in and out hook up no return line hookup
If you'll go into detail about what type car, what carb, intended use of the car, how you mounted the cell, etc., I can line out everything for you so the car will be legal at the drag strip if that's what you plan to do with it.
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Old 03-06-2008, 12:50 PM
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Usually when hooking up an electric fuel pump you need to run a fuel pressure regulator with a return line port. This allows your fuel pump to run continuously without the fuel pressure building up in the line, this can cause the fuel pump to fail prematurely and run hot all the time.

If you just run a restriction type regulator when you open the throttle you will have inconsistant fuel flow which may cause flooding or bogging, and this will hurt your performance off the line.

Any good fuel system with an electric pump utilizes a return line.
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Old 03-06-2008, 01:13 PM
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Quote:
Originally Posted by Double_v23
Usually when hooking up an electric fuel pump you need to run a fuel pressure regulator with a return line port. This allows your fuel pump to run continuously without the fuel pressure building up in the line, this can cause the fuel pump to fail prematurely and run hot all the time.

If you just run a restriction type regulator when you open the throttle you will have inconsistant fuel flow which may cause flooding or bogging, and this will hurt your performance off the line.

Any good fuel system with an electric pump utilizes a return line.
EXACTLY! See model 4309 on page 112....
http://www.malloryperformance.com/pd...m_Products.pdf
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