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  1. #1

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    Exclamation Changing to a 160 mm prop amd wear ring!

    I want to get the correct information on the forum. I see lots of post that a 160mm prop and wear ring will cause a top speed to be lost when you go to this 160mm prop over a 155 mm prop. This information is 100% wrong! The problem is that guys switch to a 160 prop/wear ring and never get the prop pitch and reduction nozzle size combination corrected to get the rpms and pump thrust where it needs to be. The 160 prop/wear ring is just a fast as a 155m set up IF you are willing to spend the time testing props and nozzles conbinations. In almost every case I have seen they try to use too tall of pitch with a 160 mm prop and incorrect nozzle size and never get back to there target rpms. When you come up short on your max rpms you will never get a good of speed as when you reach your target rpms. So don't blame the 160 prop for you speed lose. Guys try to use similar pitch and nozzle sizes as the 155 prop had and this just won't work. Just trying to set the records stright for you! Tommy Jordan


  2. #2
    Site Admin Green Hulk's Avatar
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    Tommy, thank you for posting this. I see this bad information being posted all the time also.

    While this forum is the best place on the net for great information, it can also be a source of spreading terrible information


  3. #3
    formerly Gold06RXP Turbo Nick's Avatar
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    Good points! Thanks

  4. #4
    Full Throttle or Broke!!! UNSANE's Avatar
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    Is there a basic guideline on where to pitch a prop when going to a 160 that will put you in the neighborhood?

  5. #5
    Site Admin Green Hulk's Avatar
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    Quote Originally Posted by UNSANE View Post
    Is there a basic guideline on where to pitch a prop when going to a 160 that will put you in the neighborhood?
    Not really, it all depends on the modifications on the ski and your desired RPM levels.

    When you order a 160mm Skat impeller in the forums online store you need to leave a note in the comments with your list of performance mods and your desired RPM's and we will have an impeller pitched properly for your application
    http://www.4-tecperformance.com/inde...oducts_id=1451

  6. #6
    Gus13letter's Avatar
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    Yeah, I couldn't agree more. This also goes with a twin impeller vs a single and with any other mods for that matter. Simply bolting on parts is easy. It is the tuning and getting the power to the water where it really counts.


  7. #7
    Duke's Avatar
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    Couldn't agree more Tommy, so much bad info out there about this its actually funny.

  8. #8
    fx160's Avatar
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    I would like to know
    What is the suggested outlet diameter 85 or 87 or something different all together

  9. #9
    Site Admin Green Hulk's Avatar
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    Quote Originally Posted by fx160 View Post
    I would like to know
    What is the suggested outlet diameter 85 or 87 or something different all together
    That entirely depends on the mods on the ski and how fast it's going.
    Generally the faster the ski goes the larger the nozzle has to be.

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