Fuel pressure
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Fuel pressure

  1. #1
    Senior Member 2savage4you's Avatar
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    Default Fuel pressure

    Im going from a 3/8 line into a 5/16 port and then back to a 3/8 @ the pump.

    Will the change in line size affect the pressure? Mech Edelbrock pump BBC

    Im getting a fuel valve for dual tanks and the ports are 5/16
    Standard fuel valve for a chevy truck

    Before you say it , ive seen it done on ALOT of boats

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    One Free Call Does it All CP Performance's Avatar
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    What size and type of carb? Regulated? If its all pretty much stock I would say just run it.
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    gn7
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    any restriction is a restriction. and it's worse to have on the inlet side of the pump than on the pressure side. PERIOD! That said, you may not have any trouble, but never go by what some one else can get away with. It would work on my deal for 3 seconds and I would be starved for fuel and zip fuel pressure!



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  6. #4
    It's what we do BDMarine's Avatar
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    Don't do it. Never restrict fuel on the supply side.... or any side
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  7. #5
    Senior Member 2savage4you's Avatar
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    Quote Originally Posted by CP Performance View Post
    What size and type of carb? Regulated? If its all pretty much stock I would say just run it.

    850 Anular(sp) Regulated, But with the Mech Edelbrock fuel pump i dont think i need a regulator?
    Look familiar

  8. #6
    Senior Member GT Jets's Avatar
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    If you're talking about just a fuel tank selector valve and it's 5/16", run it, normally they are 1/4" and the seem to work ok, I like to see the fuel filter right after the valve though, it seems to even out the fuel flows better, you've got a fuel pressure guage on there, just keep an eye on it at speed and see if there are any loses, I doubt very much there will be one...Just another idiots opinion though...I like mechanicals for the reason that they are not effected as much by low inlet pressures as much as an electric because they don't overheat.

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