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  1. #1

    Join Date
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    Impeller Shaft Seal (boot) - Billet Option?

    The Impeller shaft seal
    (located on the shaft forward of the prop/ cone shape)
    seems to tear and break apart frequently...

    Is there a Billet Alum alternative for the 250X stock prop?
    I think Solas makes them for their props...
    Also think Impros has a Billet 'Pro-Cone', but nothing for 250X...

    Any suggestions?
    Getting tired of replacing the rubber one...

    Thanks


  2. #2
    rhorne1053's Avatar
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    I have been running with out one for 2 years now. Harry, a poster on here told me a couple of years ago that he did not replace his so I tried without it and could not tell any difference.

  3. #3
    nicjak's Avatar
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    Quote Originally Posted by rhorne1053 View Post
    I have been running with out one for 2 years now. Harry, a poster on here told me a couple of years ago that he did not replace his so I tried without it and could not tell any difference.
    mines gone its only there to keep grease in the splines so as not to seize together

  4. #4
    Take the time to smile sirbreaksalot's Avatar
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    Quote Originally Posted by nicjak View Post
    mines gone its only there to keep grease in the splines so as not to seize together

    Some guy will argue this point,
    Yes the cone/seal is mainly there to try and keep water out of the spline to try and stop water getting in

    2ndly It is shaped that way to keep the water flow as least disturbed as possible, that is by assisting the water to not cause turbulance at the prop inputside, thus even reducing the chance of cavitation.

    its all about getting water to flow as cleanly as possible in and out of the pump/prop

    Waz

  5. #5
    nicjak's Avatar
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    Quote Originally Posted by sirbreaksalot View Post
    Some guy will argue this point,
    Yes the cone/seal is mainly there to try and keep water out of the spline to try and stop water getting in

    2ndly It is shaped that way to keep the water flow as least disturbed as possible, that is by assisting the water to not cause turbulance at the prop inputside, thus even reducing the chance of cavitation.

    its all about getting water to flow as cleanly as possible in and out of the pump/prop

    Waz
    +1 agree

  6. #6
    Formerly Ultra250 TN Aquaholic6801's Avatar
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    I know back in the Ultra 150's days, in a modded 150 it was worth @ .5 mph running with out one, I dont have any solid info to back it up on the 250, but I have run mine without it over 100 hours............

  7. #7
    JET250's Avatar
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    Quote Originally Posted by Ultra250 Tn View Post
    I know back in the Ultra 150's days, in a modded 150 it was worth @ .5 mph running with out one, I dont have any solid info to back it up on the 250, but I have run mine without it over 100 hours............
    I think you needed a skat sticker on the hood as well for the full .5 mph, otherwise you only got .2

  8. #8
    Ill post a picture of what happens to those without nose cones.

    The grease is striped from the inside spline section.

  9. #9
    Dubz1's Avatar
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    Quote Originally Posted by Skips313 View Post
    Ill post a picture of what happens to those without nose cones.

    The grease is striped from the inside spline section.
    Also.. what do you recommend? I've had a couple come out. I even tried to just put some silicone on the impeller to the shaft. That even came off! Looks like their could be a market for someone to produce a billet one.

  10. #10

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    +++++++++ 1

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