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  1. #1
    snowrunner's Avatar
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    What impeller can an XLT run with and without a 150psi head?

    Wanted to know what pitch is the limit for a stock head and 150 psi rec head on an XLT? Seems like every different company recommends a different impeller. Group K, RIVA and R&D recommend a Solas 12/18 for stock and replacement heads. Island recommends a solas 13/19 for a stock head and 13/20 SB for a boat with a pro-tec head (150 psi).

    Looking to go to either the Pro-tec head or have a spare head modified by Group K. I'm already running a Solas 12/18 and getting 61.0 MPH on my GPS.

    All my other mods are listed below.


  2. #2
    big83bronco's Avatar
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    a good 13/19 is perfect, then get it tweaked just right for YOUR boat and iw ill make even more of a difference!

  3. #3
    need4pwr's Avatar
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    Quote Originally Posted by snowrunner
    Wanted to know what pitch is the limit for a stock head and 150 psi rec head on an XLT? Seems like every different company recommends a different impeller. Group K, RIVA and R&D recommend a Solas 12/18 for stock and replacement heads. Island recommends a solas 13/19 for a stock head and 13/20 SB for a boat with a pro-tec head (150 psi).

    Looking to go to either the Pro-tec head or have a spare head modified by Group K. I'm already running a Solas 12/18 and getting 61.0 MPH on my GPS.

    All my other mods are listed below.
    what are your rpm's now with the 12/18?

  4. #4
    snowrunner's Avatar
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    RPM's

    Need,

    Tiny Tach is 61.0 MPH at 7100 RPM

  5. #5
    Moderator OsideBill's Avatar
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    Dave at Impros recommended the 13/19 he said the 12/18 has a smaller hub diameter and cavitates too much. I had the 12/18 and it spun up the rpm's and went no where in a hurry. I went with his recomendation and it made a huge difference in hook up and acceleration. I have installed PPK, R&D Grate and an R&D Pump cone and am also running an R&D head 140 PSI and aftermarket carbs and F/A.

    OsideBill
    Last edited by OsideBill; 08-07-2006 at 08:03 AM.

  6. #6
    need4pwr's Avatar
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    Quote Originally Posted by snowrunner
    Need,

    Tiny Tach is 61.0 MPH at 7100 RPM
    Your RPM's are where they should be. If anything, you could use a 13/19 repitched to a 12/18. (larger diameter hub which will get you better speed).

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