impeller what size???? is it
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impeller what size???? is it

  1. #1
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    Default impeller what size???? is it

    what is this an "a" or "aa" it measures 8.997 at its widest point from side to side...no marking[/IMG]s anywhere

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    [/IMG]

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    Senior Member jetboatperformance's Avatar
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    Maybe measure the large and small exit diameters and the blade angle ? hard to tell from the pic but looks like a AA

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    B1 Racing cs19's Avatar
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    Im going with A cut

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    small exit diameter is 7.25 ,,,how would i measure blade angle??? mike

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    Senior Member jetboatperformance's Avatar
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    Quote Originally Posted by mikewtx19 View Post
    small exit diameter is 7.25 ,,,how would i measure blade angle??? mike
    A Protractor on the exit blade


    IMPELLER SIZE LARGE DIAMETER SMALL DIAMETER MACHINED ANGLE
    9 1/2" 9-1/2" 8-1/4" 25 DEGREES
    9 1/4" 9-1/4" 8-1/4" 20 DEGREES
    AA 9-3/32" 7-13/16" 25 DEGREES
    A 9" 7-1/4" 30 DEGREES
    B 8-3/4" 6-3/4" 33-1/2 DEGREES
    C 8-1/2" 6-1/2" 33-1/2 DEGREES

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    thanks ,probably an "A"....5200 rpms is my max...my buddy has an aggressor "C" what kind of rpm change do ya think i would see with the aggressor????

  10. #8
    Resident Ford Nut Sleeper CP's Avatar
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    S CP

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    fast is the other half.
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  11. #9
    Back into Boats Beal Motorsports's Avatar
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    Depending on the cut, aggressors chart shows changing from an A to a C should increase rpm by approx 700 rpm.
    Last edited by Beal Motorsports; 08-24-2010 at 07:59 AM.

  12. #10
    Senior Member hotbo's Avatar
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    i would cut your impeller to a B cut,i would not run the C cut in this boat.

    i don't care what the aggressor charts say about sizing


    im with Chris looks A to me,need better pics
    WFLC


    2011 Performer SS
    built by Scott Seastrom.

  13. #11
    Back into Boats Beal Motorsports's Avatar
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    Quote Originally Posted by hotbo View Post
    i would cut your impeller to a B cut,i would not run the C cut in this boat.
    Only 1 way to find out.....Cut it to a B and try it. If you need more rpm after that, cut some more.

    Has more to do with where his engine makes the best power.
    Last edited by Beal Motorsports; 08-24-2010 at 05:46 AM.

  14. #12
    i'm back!! 1QuickCP's Avatar
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    Its a "a" if your measurements are correct.....if its aluminium I'd cut it to a "ab" or "b"

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    anyone ever use a bowl shim to simulate a smaller cut impeller? i just had a feller offer me one .but ive never heard of this bowl shim that he speaks of????????????i think i like it though

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    "Need For Speed" Gearhead's Avatar
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    I don't buy that one.

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