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Old 10-23-2010, 03:24 PM
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Fuel Pressure Regulator

i have an 88 f150 that i dropped a 351 in, its carburated and the 300 that was in it was fuel injected. i was wondering if i kept the stock in tank fuel pump and just put an adjustable regulator in the lines to drop the pressure how long that stock fuel pump would last at a regulated 5psi. i figured regulating the pressure that much would cause more strain on the pump. i have a mechanical pump on the engine thats in there but i figured id be easier to use a regulator on the in tank pump rather then runing new fuel lines and having to gut the stock sending unit. i just dont wanna get stuck on the side of the road due to a burnt out fuel pump. any ideas on what would work better in the long run?
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Old 10-23-2010, 03:29 PM
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Whatever you do it wont pass PA emission inspection
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Old 10-23-2010, 03:33 PM
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i knew that from the start. its mostly a play truck so i dont plan on getting it inspected. it will be on the road but not a lot. you think the pump will last with a regulator on 5 pounds?
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Old 10-23-2010, 03:42 PM
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I would have to say yes.You will need to vent the tank also as you have eliminated the evaporative system so it is most likeley closed to the atmosphere at the time being. If you dont it will build excess pressure and flood your carb anyhow.
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Old 10-23-2010, 03:51 PM
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i think ill give it a shot. its just easier to put a regulator in there instead of doing all the other jazz to make the mech pump work. if it is sealed, how do you think i should go about venting the tank?
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