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  1. #1

    04 185 GTX Cavitating

    My wife's 185 will bounce off the rev limiter when taking off. Runs fine up top at 7600-7650 and will run 67mph on speedo(she is 110lbs) It has a new ring and a rebuilt impeller from SBT. Any ideas to fix this?


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    WOT 88's Avatar
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    Quote Originally Posted by Kragar View Post
    My wife's 185 will bounce off the rev limiter when taking off. Runs fine up top at 7600-7650 and will run 67mph on speedo(she is 110lbs) It has a new ring and a rebuilt impeller from SBT. Any ideas to fix this?

    You may want to verify that SBT sent you the correct prop for that boat.

  3. #3
    I have been doing some reading and wondering if the Carbon seal needs replacing. If so, How is this done?

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    Quote Originally Posted by Kragar View Post
    I have been doing some reading and wondering if the Carbon seal needs replacing. If so, How is this done?
    Yes its quite possible that the carbon seal/accordian boot are worn enough to allow just air to pass, causing low end cavitation. I read a thread on this topic that suggested loosening the rear clamp, sliding it forward and putting a 1/4'' zip tie behind the back of the boot to put more forward pressure on the assembly and then retightening the clamp.

    You may want try that as a cheap test to see if it cures the problem first. Just a thought.

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    West Texas RXP skoepp's Avatar
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    Quote Originally Posted by Kragar View Post
    My wife's 185 will bounce off the rev limiter when taking off. Runs fine up top at 7600-7650 and will run 67mph on speedo(she is 110lbs) It has a new ring and a rebuilt impeller from SBT. Any ideas to fix this?
    Something dosn't sound right.
    With the right prop and good ring the 185 should not spin what so ever.
    I would be surprised it would make enough suction to pull boot back, but i guess if it was worn real bad it could happen on that ski. IF so, you should have had the issue before the new prop IMO.

    You got any pics of this rebuilt impeller?????????

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    Quote Originally Posted by skoepp View Post
    Something dosn't sound right.
    With the right prop and good ring the 185 should not spin what so ever.
    I would be surprised it would make enough suction to pull boot back, but i guess if it was worn real bad it could happen on that ski. IF so, you should have had the issue before the new prop IMO.

    You got any pics of this rebuilt impeller?????????
    + 1

  7. #7
    the origial impeller was scared on the edges and it would bounce off the rev limiter at that time on take off and on top end which is why I replaced it and the wear ring at the time. Now it just will bounce off rev limiter on take off from a dead stop. This ski runs real close top end to my 05 RXT. Both machines are stock. Like I said it will alway run 7600-7650 rpm. Just wondering why it is spinning out of the hole.

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