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  1. #1
    Frequent Poster joshuabbrown's Avatar
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    Just picked up a 1990 Squarenose 650 Superjet. Very Happy.

    Had to toot my own horn a bit. Picked up the ski for free.....long story.
    Got it home, and after 5 hours of tinkering, it runs!!!!!!!!!
    Corroded to hell, but I cleaned it all up, cleaned the carb, washed everything down. Yet to water test it, but runs like a champ on the hose.
    Only thing it needs is a handle pole, this one is cracked to hell.
    I was looking for a "bible" thread...or just some good info on the 650 superjet....havent found much. Could anyone point me to another thread? Or point me to a handle pole? Thanks!!!!!

    Bragging Photos. Looks rough, but its a work in progress.
    20171013_170106.jpg20171013_170117.jpg
    Anyone in South GA, lets ride.

    The Fleet:
    1990 650sx (minty fresh)
    1993 650 X2 (currently broke as hell)
    1990 JS550
    1986 JS550

  2. #2
    PWCToday.com Is My Home Away From Home JSNate's Avatar
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    Re: Just picked up a 1990 Squarenose 650 Superjet. Very Happy.

    Nice find! A lot of people with SN's install a RN pole.

  3. #3
    PWCToday Guru
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    Re: Just picked up a 1990 Squarenose 650 Superjet. Very Happy.

    How in the hell did you get that for free?
    1989 650sx - 750 SP swap, Mariner large chamber pipe / intake grate / rideplate / 4 deg JetWorks bars, finger throttle, custom paint, dual SBN38

    1992 750SX - AC alum pole, factory wet pipe, BCW intake, Ocean Pro rp, westcoast scoop, (soon) westcoast intake w. dual SBN44

  4. #4
    PWCToday.com Is My Home Away From Home
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    Re: Just picked up a 1990 Squarenose 650 Superjet. Very Happy.

    You've just poisoned your Kawi fleet with a Yami. Nice find, especially for free. I'm jealous!
    Riding mostly Lake Austin

    1984 JS440 -- 1989 650sx -- 1991 X2 -- 1992 750sx -- 1995 900zxi (qty 2) -- 1995 X2

    Quote Originally Posted by cujo View Post
    God intended PWC to be two strokes, as well as dirt bikes, snowmobiles, and chain saws....

  5. #5
    PWCToday.com Is My Home Away From Home freekstyle's Avatar
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    Re: Just picked up a 1990 Squarenose 650 Superjet. Very Happy.

    Quote Originally Posted by StuRat View Post
    How in the hell did you get that for free?
    Because the og owner realized Kawi's rule!

  6. #6
    Frequent Poster joshuabbrown's Avatar
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    Re: Just picked up a 1990 Squarenose 650 Superjet. Very Happy.

    Hahaha. Probably all of those things. Long story short, the guy I was going to buy it from got tied up, but I was already there looking it over. Called and told him all that was wrong with it. He said just take it....
    I was going to try not to spend 400 bucks on a pole...
    Anyone in South GA, lets ride.

    The Fleet:
    1990 650sx (minty fresh)
    1993 650 X2 (currently broke as hell)
    1990 JS550
    1986 JS550

  7. #7
    Frequent Poster joshuabbrown's Avatar
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    Re: Just picked up a 1990 Squarenose 650 Superjet. Very Happy.

    Quick question, wish I had a good photo of it. Theres an extra hose at the pump.
    Its a 90 degree plastic elbow turned up coming out of the left side of the pump. Almost sticks out past the hull. No idea what its for. It seems to be plummed correctly.
    Wanted to know any ideas what it might be, and what the large rubber hose turned down at the pump on the left is?
    Anyone in South GA, lets ride.

    The Fleet:
    1990 650sx (minty fresh)
    1993 650 X2 (currently broke as hell)
    1990 JS550
    1986 JS550

  8. #8
    Resident Guru bored&stroked's Avatar
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    Dec 2006
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    Re: Just picked up a 1990 Squarenose 650 Superjet. Very Happy.

    Lines from pump will either be cooling, dual cooling, or bilge. Being a 1990 model I assume your asking about the bilge that losses alot of pump pressure to divert flow and create the suction. Its stupid and wastefull and they changed in 93 to the current style.
    '90 Superjet: ported 760, dual 44's, B pipe, ADA head 190psi, TDR waterbox, hooker 10-16, sponsons. Girlfriends ride
    '94 Suuuperjet: 718cc, pro tec pipe, Groupk head 175psi w/protec girdle, protec ride plate, MSD coil, UMI grate, Roundnose pole -4", rev footholds, sweet green turf and wrap.
    '95 Raider 701: Fiberglass not SMC, Hydrotrailer hitch, ugly purple and yellow everywhere.

  9. #9
    Top Dog Benflynn's Avatar
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    Re: Just picked up a 1990 Squarenose 650 Superjet. Very Happy.

    I have a 6m6 dual sBN protec manifold u can have for shipping if u stay 650, I had it for sale for ever and it's just chillin. I wish I went a season on the 650 before going 62t/61x, it's exhausting now. And I wish I spen the 200$ I spent on 62t cases on a single power bomb 48

  10. #10
    Frequent Poster joshuabbrown's Avatar
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    Re: Just picked up a 1990 Squarenose 650 Superjet. Very Happy.

    Interesting. With all my skis I make myself get them going and ride them for a season before doing crazy stuff. And to make sure they stay together.
    What does that manifold get me? Is it just the manifold? I believe I have two good sbn44s from a dual 650sx setup.
    Anyone in South GA, lets ride.

    The Fleet:
    1990 650sx (minty fresh)
    1993 650 X2 (currently broke as hell)
    1990 JS550
    1986 JS550

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