550/650 Pump and Engine Conversion
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  1. #1
    PWCToday Newbie
    Join Date
    Jul 2011
    Location
    Oregon City
    Age
    34
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    42

    550/650 Pump and Engine Conversion

    Iíve been working on this project for a couple years. Itís had a couple different versions and I think that this will be close to its final form.

    I bought it seven years ago as a stock 85 JS550. After some serious cutting and fiberglassing it has the guts of a 89 650sx (including the whole pump intake from the 650) with some aftermarket things. Hereís a reasonably comprehensive list:

    -650 motor
    -46 mm Mikuni (120 pilot and 150 main jets)
    -Stock Head
    -PJS exhaust
    -Dual cooled exhaust
    -Mariner water box
    -Stock 650 electronics stuffed into a 550 ebox
    -Blowsion fuel pickup
    -FCV
    -Blowsion flame arrestor
    -650sx throttle cable
    -140mm pump w/ 10/16 Impros Hooker impeller
    -Pump wedge to help with porpoising
    -Blowsion pump cone
    -PJS ride plate and intake grate
    -Rhaas products zero slop steering cable ends
    -Blowsion steering system
    -ODI Grips
    -Blowsion billet trotted
    -Rhaas bilge pump switch holder
    -Blowsion Brap Strap
    -Blowsion recessed dash switch (I relocated the On/Res switch and primer bulb)
    -Blowsion foot wells

    I did all the paint, body work, and hydroturf myself.

    Itís only been on the water a couple times and it rips. Itís worth the look on Superjet and SXR riders faces everyday of the week and twice on Sunday.

    Last edited by ScottyD32; 08-15-2018 at 06:50 PM.

  2. #2
    Frequent Poster
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    Oct 2008
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    Greece
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    162

    Re: 550/650 Pump and Engine Conversion

    Nice ski!!!

  3. #3
    PWCToday.com Is My Home Away From Home BLRider's Avatar
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    Apr 2007
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    SE MI
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    Re: 550/650 Pump and Engine Conversion

    Well done.
    Never argue with an idiot, they will drag you down to their level then beat you with experience.

  4. #4
    Frequent Poster
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    Aug 2002
    Location
    Seattle
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    43
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    Re: 550/650 Pump and Engine Conversion

    Nice work!

  5. #5
    PWCToday Regular bonkers73's Avatar
    Join Date
    Jun 2005
    Location
    Huntington Beach, ca
    Age
    46
    Posts
    142

    Re: 550/650 Pump and Engine Conversion

    Sweet Ski!
    \"If it isnt wet, whats the point\"
    www.soggydiaper.com

  6. #6
    PWCToday Newbie kailuaboy89's Avatar
    Join Date
    Jun 2014
    Location
    San Diego
    Posts
    18

    Re: 550/650 Pump and Engine Conversion

    throw some tubbies and fish sticks on her and it will really turn, and definitely give the bigger boats some fits! nice build man! looks clean!
    "Don't Sweat the Petty things, Just Pet the Sweaty things"

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