Alky Pro help

Discussion in 'PSI Superchargers Tech Questions' started by cheyenne, Nov 28, 2017.

  1. cheyenne

    cheyenne Member

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    I'm trying to use the alky pro for the first time to adjust my blower od and i'm stuck. I want to go from 75% od to 31% od so how much fuel do I need to take away and where. This is a BBC with a PSI screw blower. HELP

    Made 31# at 75% od and 21# at 31% od.
     
    #1
    Last edited: Dec 6, 2017
    cheyenne, Nov 28, 2017
  2. Mike Canter

    Mike Canter Top Dragster
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    You have to know how much boost difference there between the two OD’s and multiply that by .34 to find the GPM difference then subtract that amount from the fuel actually flowing into the motor. You may have to increase the size of your pump loop to keep the main jet within the range you want. So how much boost at 9000 rpm did you have before and what is your new estimated boost at 9000?
     
    #2
    Mike Canter, Nov 28, 2017
  3. Mike Canter

    Mike Canter Top Dragster
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    Let’s wait and see if somebody on this forum can give us an estimate of the amount of boost at 31% on a screw blower then we can go from there on Alky Pro. So you are saying your pump loop is blocked off or you just haven’t figured out what size pill you need there?
     
    #3
    Last edited: Nov 28, 2017
    Mike Canter, Nov 28, 2017

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