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Thread: 2001 X21 setup

  1. #1
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    2001 X21 setup

    any have any experience w/x-21 with a 225 promax looking for props an motor heights any ideas will help
    good holeshot w/25m prop but not getting rpms up to run due to losing water pressure
    have turned it to 6100 but lost pressure an overheat comes on
    thanks in advance


    current setup previous setup

    16" set back 12 setback
    3.75 ptp 4.5 ptp
    5200 53mph 5000 50 mph

    lithium batteries
    light load
    losing water pressure at 1/4 trim

  2. #2
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    Is this the boat? What lower unit is on your Promax? CLE or a Sportmaster or a Torquemaster?
    Can you fix the water pressure by lowering the motor on the jackplate?

    Xpress Boats X21 Review - Wired2Fish

  3. #3
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    Click image for larger version. 

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ID:	506213it has a stock 2.5 200 lower unit no torquemaster an i have lowered the motor to 5.5 below pad an get the same results when i get past about 1/4 trim mark im overheating an losing pressure from 15psi to around 8 psi then it will kick off a overheat alarm bring it back down an within 15 seconds it will cut off the alarm

    an yes it is that boat style but not the same boat
    Last edited by myob75; 06-15-2022 at 03:09 PM.

  4. #4
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    5.5" below the pad should be deep enough for no water pressure worries at all. And perhaps 8 psi is enough anyway, but you can't ignore the overheat alarm. Is the water pump good?

  5. #5
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    Brand new water pump checked the entire cooling system from the lower unit to the mid took the heads off an etc just to make no blockage

  6. #6
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    I got nothing, except that I don’t think your overheating is a prop problem. Maybe you could start another post about overheating in the technical section

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