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Old 07-11-2011, 04:57 PM
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Procomp fuel pressure regulator

I purchased a fuel pressure regulator from the local peformance shop procomp part # 2851. I was told it was a return style, from research on the net I have determined it is not. It has two outs. Im assuming one cant be simply used as a return, the gas will take the path of least resistance?? If this is the case, can it still be used? I got such an amazing deal on it. Thanks folks

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Old 07-11-2011, 07:38 PM
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You can use this pump and do the return line with it. Find a jet out of a holley carb, stick it in the line and it acts as a restrictor.
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Old 07-11-2011, 07:41 PM
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Thanks so much DV for the quick responce. I have a holley 2300. How can I remove the jet?
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Old 07-12-2011, 03:55 AM
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Ok have the jet....stupid question earlier...4 screws..sorry...whats the best way to fasten it in the line?
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Old 07-12-2011, 03:58 AM
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The fuel line and return line are different sizes.... i believe 3/8 and 1/4. Would having the smaller diameter return line increase the pressure in the other? much like using the jet from the carb?
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Old 07-12-2011, 03:11 PM
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oh and one mroe question if I may...will the fuel take the path of least resistance? or will it simply put 2 equal amounts of fuel down each line, just at whatever pressure its regulated to?
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Old 07-12-2011, 09:15 PM
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Fuel will flow greater with the least resistance. The side with the jet will flow less than the open tube to the carb. The jet will allow a small flow rate when fuel demand is low and float bowl valves are closed. When fuel demande increases, the regulator will open up. The jet will increase flow as well, though not much.

What kind of system runs on 7-9psi and needs a return line? I thought only higher pressure fuel Injection systems needed a return.
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Old 07-13-2011, 03:25 AM
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15 lbs tbi pump
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