Pump Sizer Question

Discussion in 'Manton Push Rods Top Alcohol Tech Questions' started by Dirty Deeds, Sep 16, 2018.

  1. Dirty Deeds

    Dirty Deeds New Member

    Joined:
    Nov 27, 2016
    Messages:
    2
    Likes Received:
    0
    I am replacing a Hilborn -4 pump with an Enderle 990 flowing 14.54 gpm.

    I am not currently running a pump sizer.

    Using Spud calculator Its telling me I will need to run a .180 pill at 96 psi

    I calculate I need .150 pill in a pump sizer to get the pill size to around .100

    My question is what would this do to the fuel pressure?, I'm worried it will drop it too low.

    Is there any way to work out what the pressure will be with the pump saver installed?

    Thanks
     
    #1
  2. Mike Canter

    Mike Canter Top Dragster

    Joined:
    Mar 10, 2004
    Messages:
    4,190
    Likes Received:
    87
    Ideal fuel pressure is around 125 psi at 8000 rpm in first gear. Where are you at now? Your new pump is going to raise you fuel pressure. Never seen a problem having the fuel pressure too high, only a problem if it gets too low
     
    #2
  3. Dirty Deeds

    Dirty Deeds New Member

    Joined:
    Nov 27, 2016
    Messages:
    2
    Likes Received:
    0
    Thanks for that Mike.
    Ive had a complete brain fade.
    After I posted the question I forgot I was replacing the .180 with a .100 so theoretically the orifice stays the same and so pressure should stay the same as well
     
    #3

Share This Page