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  1. #31
    TimeBandit's Avatar
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    Quote Originally Posted by Thor View Post
    . . . .
    WHAT DOES THIS MEAN to a VXR / SXR1500 owner who has shied away from supercharged pwc’s in the past, in an effort to keep life as KISS as I can?
    . . . .
    I’ll try to elaborate a bit more on your question . . .
    All it means, is that your ’18 VXR now has the option take advantage of the newly designed ’20 VXR jet pump. While this new pump will not make your VXR perform any faster (it’s still a 155mm pump), these new pumps are one-component now (i.e. impeller housing & stator are combined), and also include an integrated replaceable stainless wear ring. So the obvious benefit to this new pump, is being a feasible fix (or preventative measure) for those past skis which currently have, have had, or at the risk of (aka saltwater riders) developing wear ring blisters.

    Now, as far as how this related to supercharged skis (topic of this thread) . . . it’s the same one-component replaceable ring design as above, yet it’s a bigger 160mm pump. Past SC skis also have 160mm, yet this new design is considered a more true 160mm pump, therefore in addition to the one-component replaceable ring advantages, this new design might logically translate into potential performance gains for SC owners.

  2. #32
    superair's Avatar
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    So with this design if the impeller is stuck how easy will it be to heat it? Looks like it might require the shaft to be removed.

  3. #33
    Adam's Avatar
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    This looks very similar to a Skat trak setback pump , but not set back as far . This pump would retro fit GP1200R and GP1300R’s too .

  4. #34
    Thor's Avatar
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    Quote Originally Posted by TimeBandit View Post
    I’ll try to elaborate a bit more on your question . . .
    TimeBandit, endless thanks, man! A primary reason for my curiosity is an “itch” I am developing as to the possibility of adding a super-charged sit-down to our “stable.” I’ve pretty much gifted the VXR to my wife, my oldest has zero interest in standups but does love Speed and , we could use another 2-3 person ski and I can’t help but wonder if a SC model doesn’t make sense at this point ...

    One thing appears to be certain and that is, every season I wait brings more improvements to the GP line ....!

  5. #35
    Click avatar for tech links/info K447's Avatar
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    Quote Originally Posted by Thor View Post
    ... every season I wait ...


    Since new in 2017, not-waiting has provided us with over 200 hours of GP1800 fun.

    Yes, I did have to upgrade the ride plate and intake grate separately, and do the intake grate reinforcement. Not a bad trade-off overall.

    If the new jet pump configuration turns out to be worthwhile, I can upgrade that too.

    Most of the other upgrades I have added would also apply to the 2020 GP1800R SVHO model.

    Yamaha created something special with the GP1800.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    Last edited by K447; 09-29-2019 at 11:05 PM.


  6. #36
    MSX 150 guy lives on Mr. GP1800's Avatar
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    Quote Originally Posted by K447 View Post


    Since new in 2017, not-waiting has provided us with over 200 hours of GP1800 fun.

    Yes, I did have to upgrade the ride plate and intake grate separately, and do the intake grate reinforcement. Not a bad trade-off overall.

    If the new jet pump configuration turns out to be worthwhile, I can upgrade that too.

    Most of the other upgrades I have added would also apply to the 2020 GP1800 SVHO model.

    Yamaha created something special with the GP1800.

    I agree. The year over year changes to the GP1800 are very minor. My 2017 is set up better than he new models are. If the pump proves to be a worthwhile upgrade I will do it as well. But overall I’m very happy with mine. I’m at 120 hours and it’s been near perfect. I have a ride motor issue that was solved by unplugging the harness to it and reconnecting it. Problem solved

  7. #37

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    So all we need for the 2019 skis is the pump ? Or do we still need the driveshaft?

  8. #38

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    Deans transom plate mod

    Does this eliminate the need for the deans transom plate modification? Wouldn’t think so? Wonder why Yamaha doesn’t offer the whole series at 160mm.

  9. #39
    fx160's Avatar
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    Quote Originally Posted by SPW62 View Post
    Does this eliminate the need for the deans transom plate modification? Wouldn’t think so? Wonder why Yamaha doesn’t offer the whole series at 160mm.
    2021 models will possibly come with that mod

  10. #40
    TJBrad04's Avatar
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    Transom plate is still 155mm, 2020 FX SVHOClick image for larger version. 

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