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Thread: What PSI are SVO injectors flowed at?

  1. #1
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    Default What PSI are SVO injectors flowed at?

    I have been tuning a guys car with my stock 28.8's on it. He just bought some SVO 42# Green Tops. If I remember correctly these injectors are not flow rated at 43.5psi like GM injectors. Does any one know what they are flowed at. I need to make a new IFR table and I don't want to retune the car. Thanks.

    Brett

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    Everything I've read indicates the SVO's are flowed at 43.5 psi.

    I've read recently on tech that the 28.8's are flowed at 58 & if you enter that value into the Excell SS for the 28.8's, the results are pretty close to the oem FIR. ???

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    Lifetime Member TAQuickness's Avatar
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    The flow rating for SVO's has been a long debated topic. I used 43.5 on RHS's spreadsheet to calculate my new IFR. I've heard though that Ford rates the SVO's at 40psi though.

    Assuming you have your buddies car back in CL, you could easily try a 40 and 43.5 psi IFR calculation and see which one yeilds the same LTFT's at the 28.8's.


  4. #4
    Joe (Moderator) joecar's Avatar
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    See post #36: showthread.php?p=67871#post67871

    So far we have: 39.15, 39.5, 40, 42, 43.5 [psi].
    Last edited by joecar; April 16th, 2008 at 10:30 AM.

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    Lifetime Member TAQuickness's Avatar
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    You da man


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    Lifetime Member hquick's Avatar
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    Everything I've read suggests 39.15psi. Problem is....I've also read they flow at 42lb at "39.15 and above".
    It's like trying to find a needle in a haystack. I've spent literally hundreds of hours online searching through forums and just running general searches.
    Do a search here for 42lb or Bosch and you'll find a couple of current threads.
    Howard

    YOU ONLY NEED TWO TOOLS IN LIFE - WD-40 AND DUCT TAPE. IF IT DOESN'T
    MOVE AND SHOULD, USE THE WD-40. IF IT SHOULDN'T MOVE AND DOES, USE THE
    DUCT TAPE.
    IF YOU CAN'T FIX IT WITH A HAMMER, YOU'VE GOT AN ELECTRICAL PROBLEM.


    98 K1500 'HOLDEN' Suburban.
    Custom Whipple SC, Mercruiser Marine intake, 0411 PCM, 4L80E w/shift kit

  8. #8
    Lifetime Member hquick's Avatar
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    Marcin...seems to me they're closer to 43lb/hr at 43.5...according to those sheets?
    Howard

    YOU ONLY NEED TWO TOOLS IN LIFE - WD-40 AND DUCT TAPE. IF IT DOESN'T
    MOVE AND SHOULD, USE THE WD-40. IF IT SHOULDN'T MOVE AND DOES, USE THE
    DUCT TAPE.
    IF YOU CAN'T FIX IT WITH A HAMMER, YOU'VE GOT AN ELECTRICAL PROBLEM.


    98 K1500 'HOLDEN' Suburban.
    Custom Whipple SC, Mercruiser Marine intake, 0411 PCM, 4L80E w/shift kit

  9. #9
    Junior Member jomobco's Avatar
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    I thought all gas injectors were calculated at a base rate of 43.5? Are there some that aren't?

  10. #10
    Lifetime Member hquick's Avatar
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    For some reason it seems Ford choose not to go by the way of 'industry (GM) standard'.
    Here's some info (there's a couple of us trying to do this at present).

    http://forum.efilive.com/showthread.php?t=7574

    http://forum.efilive.com/showthread.php?t=7713

    http://forum.efilive.com/showthread.php?t=7790
    Howard

    YOU ONLY NEED TWO TOOLS IN LIFE - WD-40 AND DUCT TAPE. IF IT DOESN'T
    MOVE AND SHOULD, USE THE WD-40. IF IT SHOULDN'T MOVE AND DOES, USE THE
    DUCT TAPE.
    IF YOU CAN'T FIX IT WITH A HAMMER, YOU'VE GOT AN ELECTRICAL PROBLEM.


    98 K1500 'HOLDEN' Suburban.
    Custom Whipple SC, Mercruiser Marine intake, 0411 PCM, 4L80E w/shift kit

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