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  • standupsonly
    PWCToday Regular
    • Jun 2009
    • 70
    #1

    1990 js 550

    For sale 1990 JS 550.

    Completely restored
    new marine two part urethane paint job
    motor just rebuilt will new OEM crankshaft and seals
    new pistons and fresh bore
    many upgrades In perfect condition runs perfect.
    new everything
    located Seaford Long Island
    price $2300
    Attached Files
    Tags: None
  • CA550sx123
    Frequent Poster
    • Sep 2019
    • 287
    #2
    Re: 1990 js 550

    clean

    Comment

    • restosud
      PWCToday.com Is My Home Away From Home
      • Oct 2006
      • 2206
      #3
      Re: 1990 js 550

      1990? thought they were sx hulls already.

      Comment

      • MrSki
        PWCToday.com Is My Home Away From Home
        • Sep 2005
        • 10878
        #4
        Re: 1990 js 550

        Originally posted by restosud View Post
        1990? thought they were sx hulls already.
        1990 is the first SX. But they were still piston port motors.
        1993 Laser Jet F15 - Mild port to PJS Cylinder.
        1992 Laser Jet F14 - Raced in 1992 World Finals.
        1992 550 SX - PJS Secret Weapon Big Bore, Kind of fast, LOL.
        1989 JS 550 - PJS motor Dual 46's, 50 MPH on GPS.
        1989 Wet Jet - Upgraded 1994 50 HP motor & exhaust. 45 MPH, yee ha!
        1986 JS 550 - Engine built. Working on fiberglass!
        1976 JS 400 - Pretty much just a shell. Sure want to restore this some day!

        Comment

        • restosud
          PWCToday.com Is My Home Away From Home
          • Oct 2006
          • 2206
          #5
          Re: 1990 js 550

          Originally posted by MrSki View Post
          1990 is the first SX. But they were still piston port motors.
          yes,but this does not look like a sx hull.

          Comment

          • Myself
            PWCToday.com Is My Home Away From Home
            • Jun 2006
            • 7793
            #6
            Re: 1990 js 550

            Originally posted by restosud View Post
            yes,but this does not look like a sx hull.
            I see a rear exhaust outlet......
            http://www.facebook.com/twinlakesjetskirepair

            '89 Kawi 650SX 42.4 GPS
            +3" stock pipe, ported ex. manifold, drilled waterbox, blueprinted pump, Ocean Pro ride plate

            '99 Yama GP1200 65U 61.8 GPS
            ported cylinders, matched cases, milled head, blueprinted pump, long ride plate

            '96 Seadoo HX 717 53.13 GPS
            light porting, massaged cases, lightened flywheel, port matched manifolds, Rossier pipe, stubby pump cone

            Comment

            • pjbaz
              PWCToday Newbie
              • Jul 2020
              • 48
              #7
              Re: 1990 js 550

              Originally posted by restosud View Post
              yes,but this does not look like a sx hull.
              I'm certainly no expert, but I agree that something seems odd. I thought the SX hulls were "stepped" in the rear, and the FE hole was on the left side; the rear exhaust in an alcove of sorts with an open starboard side. Perhaps I'm thinking of a different year SX (mine came without a HIN)

              Regardless, it's a wicked machine!
              Last edited by pjbaz; 11-13-2020, 11:09 AM.

              Comment

              • PrickofMisery
                PWCToday.com Is My Home Away From Home
                • Mar 2007
                • 11071
                #8
                Re: 1990 js 550

                PJ you’re correct, It is not an SX hull. The right side end cap also doesn’t jive.


                Don’t fret though.... this is a super clean looking ski that appears to have been built well. Someone will certainly be happy.

                Comment

                • pjbaz
                  PWCToday Newbie
                  • Jul 2020
                  • 48
                  #9
                  Re: 1990 js 550

                  Originally posted by PrickofMisery View Post
                  PJ
                  Don’t fret though.... this is a super clean looking ski that appears to have been built well. Someone will certainly be happy.
                  Agreed!

                  I can only dream of putting the time and effort into mine to look that good ... never going to happen. LOL

                  Comment

                  • Myself
                    PWCToday.com Is My Home Away From Home
                    • Jun 2006
                    • 7793
                    #10
                    Re: 1990 js 550

                    I have to agree with both y'all. SUPER nice ski. You start adding up parts and then hours upon hours of labor to make one pretty..........

                    No excuses for anybody looking now. Got this nice one in the Northeast, and the one MrSki is offering in the Southwest!
                    Last edited by Myself; 11-13-2020, 02:26 PM.
                    http://www.facebook.com/twinlakesjetskirepair

                    '89 Kawi 650SX 42.4 GPS
                    +3" stock pipe, ported ex. manifold, drilled waterbox, blueprinted pump, Ocean Pro ride plate

                    '99 Yama GP1200 65U 61.8 GPS
                    ported cylinders, matched cases, milled head, blueprinted pump, long ride plate

                    '96 Seadoo HX 717 53.13 GPS
                    light porting, massaged cases, lightened flywheel, port matched manifolds, Rossier pipe, stubby pump cone

                    Comment

                    • kawix2ontario
                      PWCToday Newbie
                      • Mar 2018
                      • 2
                      #11
                      Re: 1990 js 550

                      do you still have it ?

                      Comment

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