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Thread: I finally GPS'ed the new boat.

  1. #1
    Mr. Crusader 83
    71.4 with a stock pump at 6200rpms:jawdrop:
    Is that to high?
    Will a shoe and ride plate, droop and diverter bring that down some?
    Or do I need a new inpeller?
    What should I run.
    Its a 1981 18ft Crusader (splash of southwind) with a 468 and berkeley 12JG.

  2. #2
    hotbo
    71.4 with a stock pump at 6200rpms:jawdrop:
    Is that to high?
    Will a shoe and ride plate, droop and diverter bring that down some?
    Or do I need a new inpeller?
    What should I run.
    Its a 1981 18ft Crusader (splash of southwind) with a 468 and berkeley 12JG.
    what impeller do you have.tes imo thats way to high rpm for the speed you were running,have you verified if the tach is 100 percent on the money,might look into that first.if so then i would be looking into the pump.was it cavitating any at all any funny things going on.:idea:

  3. #3
    Mr. Crusader 83
    what impeller do you have.tes imo thats way to high rpm for the speed you were running,have you verified if the tach is 100 percent on the money,might look into that first.if so then i would be looking into the pump.was it cavitating any at all any funny things going on.:idea:
    Funny thing is. It doesnt cavitate at all. You can stand on it from a dead stop. And it just takes off. The inpeller looks good from under the boat. No chunks nmissing. The leading edge is in good shape.
    Im not sure about the tach. or the inpeller size.

  4. #4
    Senior Member
    Join Date
    Feb 2009
    Posts
    1,593
    My Southwind is a 78 with a 468 BBC and I am running about 76 MPH @ 5100 RPM's with a Berkeley A. I am guessing that the HP is a little less than 500. I would check the tach like said and call the old owner and ask him what size impeller he put in the boat. I would also ask him for the engine details and go from there.

  5. #5
    Mr. Crusader 83
    I would also ask him for the engine details and go from there.
    Yeah. He said it was around 700hp. but im not buying that.

  6. #6
    lamsv
    Yeah. He said it was around 700hp. but im not buying that.
    Oh No's...ebay power guestimation!

  7. #7
    BLOWN JOB
    what hull the tunnel or vee

  8. #8
    YeLLowBoaT
    1st check the tac... then check the gap on the impeller...

  9. #9
    ck7684
    Could be right if the impeller is small...need more info though...

  10. #10
    Mr. Crusader 83
    what hull the tunnel or vee
    V bottom.

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