Fuel Pressure question

Discussion in 'InsideTopAlcohol.com Tech Questions' started by Scooby1, Mar 28, 2019.

  1. Scooby1

    Scooby1 New Member

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    What would be an ideal system pressure for the best tunability with a Whipple Screw motor?
    I have read anywhere from 100 to 200psi and would like to know what is best for best results.
    Thanks in advance Jamie
     
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  2. Mike Canter

    Mike Canter Top Dragster
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    I find the best is 125-130 psi at 8000 rpm in first gear.
     
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  3. Scooby1

    Scooby1 New Member

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    Thanks Mike yet again. My system pressure was 156lb @ 8000 with no loop and .090 main. Being a 110 pump and having 9gpm into motor for 25lb boost would this pressure be ok?
     
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  4. Mike Canter

    Mike Canter Top Dragster
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    It is not going to hurt anything being a little high. Too low will hurt you but higher within limits will not. Looks like you tuneup is right on.
     
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  5. Scooby1

    Scooby1 New Member

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    Thanks Mike it puts my mind at rest.
    I would say to anybody to always get your system flowed and dont trust advertised pump figures.
    New pump was 7% off advertised flow.
    Thank you once again Jamie
     
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