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post #1 of 31 (permalink) Old 08-19-2007, 10:00 AM Thread Starter
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homemade fuel system

looking at making a regulated fuel return but need to know how much to reduce the return

wish it was as easy as throwin a washer it the return line like on other applications

just got free usage of a cnc machine so back to homemade parts it is for me hopefully

ryan

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post #2 of 31 (permalink) Old 08-19-2007, 02:58 PM
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Re: homemade fuel system

I assume by your question, you don't want to use a regulator. You want to put a restrictor orifice in line to produce the proper back pressure. Am I accurate?

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post #3 of 31 (permalink) Old 08-19-2007, 03:21 PM
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Re: homemade fuel system

If that is the case, then better to start off by stating that it simply will not work.

The fuel demand varies, so the flow through the return line will as well if constant pressure is to be maintained at the injectors and constant flow is to be maintained from the pump.

Or were you trying to size the return line?
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post #4 of 31 (permalink) Old 08-19-2007, 03:26 PM
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Re: homemade fuel system

keeping or deleting fuel bowl?

2002 F250
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post #5 of 31 (permalink) Old 08-19-2007, 07:47 PM
 
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Re: homemade fuel system

If cheap is your objective, use a regulator off an OBS truck.
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post #6 of 31 (permalink) Old 08-20-2007, 06:40 AM Thread Starter
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Re: homemade fuel system

Quote:
Originally Posted by strokin_early_99 View Post
I assume by your question, you don't want to use a regulator. You want to put a restrictor orifice in line to produce the proper back pressure. Am I accurate?

Keep Strokin'
no i want to make my own regulator
i was just stating that i wish it were as easy as just restricting the return line


ive already got a block made now all i need to know is what the return line needs to be reduced to

i am going to keep the fuel bowl for now since im in alaska but when i leave here its gonna come out

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post #7 of 31 (permalink) Old 08-20-2007, 06:44 AM Thread Starter
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Re: homemade fuel system

Quote:
Originally Posted by gregrob View Post
If cheap is your objective, use a regulator off an OBS truck.
greg i i dont want to be cheap just want to have an original

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post #8 of 31 (permalink) Old 08-20-2007, 06:54 AM Thread Starter
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Re: homemade fuel system

Quote:
Originally Posted by Charles View Post
If that is the case, then better to start off by stating that it simply will not work.

The fuel demand varies, so the flow through the return line will as well if constant pressure is to be maintained at the injectors and constant flow is to be maintained from the pump.

Or were you trying to size the return line?

No it will work or no one would be selling them

Not to start a debate but a regulated return means you are regulating the RETURN line right

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post #9 of 31 (permalink) Old 08-20-2007, 04:59 PM
 
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Re: homemade fuel system

I doubt you'll get any worth while responses because most people probably have just purchased some kind of reulator, rather than reinventing the wheel.

I think my fuel system is gonna be pretty original

I don't care if it's original though, I want what works.
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post #10 of 31 (permalink) Old 08-20-2007, 05:14 PM
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Re: homemade fuel system

If I'm reading this right, you are trying to control pressure simply with the sizing of the return line to the tank? That won't work, plain and simple. You need a pressure regulator, something that can "respond" to changes in fuel pressure when fuel demand changes. Using restricted return lines would provide you with a fixed volume return that won't change to respond to increases or decreases in rail pressure during high or low demand conditions.

Dennis Schroeder - Co-Owner of Strictly Diesel

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