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Thread: Required Fuel Pressure for Sequential Fuel Injection

  1. #1
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    Default Required Fuel Pressure for Sequential Fuel Injection

    I know absolutely zero about this stuff, so I need some help.

    What would the approx required fuel pressure for sequential fuel injection be? I want to put an in-tank pump in the car, from its externally mounted one.

    I have a Weber style injector set-up with a 20 year old Haltec brain. I was to change to a Holley Terminator X, or something similar...
    Engine - 390 CI Ford Cleveland - 36 LB injectors
    the brain only has to control the FI - Nothing else - No transmission, no nitrous, no boost, just basic FI and associated FI functions.

    Does anyone have any real-world experience with this? Please don't tell me to read a book as I already know I can read a book or go to websites but they all leave me with more questions than answers. Has someone actually used a Terminator X or something similar for the brain? Is one brand better than the other?

    TIA....Gary

    I am removing the nitrous.....
    Picture 3566.jpg

  2. #2
    Club Member wrath's Avatar
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    Need to know what injectors are in it. Most are either going to be 3bar (43psi) or 4bar (58psi).

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    Quote Originally Posted by wrath View Post
    Need to know what injectors are in it. Most are either going to be 3bar (43psi) or 4bar (58psi).
    Here is what I was told they are...
    Bosch 36 lb/hr green top EV1 style

    Thanks.......Gary

  4. #4
    Club Member wrath's Avatar
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    Looks like they'll go from 2.5bar/36psi to 7bar/100psi.

    So pick your peak horsepower and get a pump that will flow the rate required through the injectors at that hp and pressure plus 20%.

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