Bowl Clearance
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Bowl Clearance

  1. #1
    Senior Member gregb's Avatar
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    Default Bowl Clearance

    Recently I took my impeller out to get it cut down a size, before removing it I checked the clearance between the bowl and the back of the impeller and it's close to an 1/8 inch. (used the play-doh method). Was thinking of putting in a stuffer. What is an acceptable clearance range for that area? What are you folks running for max efficiency and performance out of your jets? Thanks,
    Greg

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    mo balls than $cents$ IMPATIENT 1's Avatar
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    Quote Originally Posted by gregb View Post
    Recently I took my impeller out to get it cut down a size, before removing it I checked the clearance between the bowl and the back of the impeller and it's close to an 1/8 inch. (used the play-doh method). Was thinking of putting in a stuffer. What is an acceptable clearance range for that area? What are you folks running for max efficiency and performance out of your jets? Thanks,
    Greg
    i think everyone i've ever asked that question had a different answer. 1/8th is fine, close'n it some helps, opening it up hurts alot. i've had to cut a few bowls at the flange to draw in the bowl some to the impellor, holeshot got meaner for the effort.i'd have to see my notebook on the tx19, but i think i had alil less than 1/8th at the back(dominator bowl with dom style stuffer ring), and a 1/8th min at the veins(with a amt ss aa cut).

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    Senior Member jetboatperformance's Avatar
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    The Impeller is always wanting to push the pump shaft forward thru the bow of the boat,virtually no aft movement , you could safley close it up quite a bit from .125 Tom

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    "It's HONDO, honey" Kyle's Avatar
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    Quote Originally Posted by jetboatperformance View Post
    The Impeller is always wanting to push the pump shaft forward thru the bow of the boat,virtually no aft movement , you could safley close it up quite a bit from .125 Tom
    Uh oh............ so mine's a "little" tight then Tom
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    Senior Member jetboatperformance's Avatar
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    Kyle ,as close as .015 (maybe) to .030 if your confortable with it Tom

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    Boat Nut sleekcrafter's Avatar
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    You can build a simple stuffer plate out of .100 aluminum, center diameter enough to clearance shaft and nut, outer diameter is the same as the center of the bowl (about the diameter of the back side of the impeller) Secure it with 4 to 6 stainless screws, drilled, and tapped into the bowl. (counter sunk screws)

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    Senior Member DuaneHTP's Avatar
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    That will work fine, but we feel it is best to use the coned type stuffer to eliminate the volume of water that the impeller has to churn back there.


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