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  1. Replies
    3
    Views
    214

    Re: 98 ZXI 1100 piston damage/ corrosion

    Show us a picture of the piston skirts


    Bill M.
  2. Re: New Aftermarket X2 Expansion Chamber that uses stock headpipe

    Or, perhaps it has a .040" composite head gasket?


    Bill M.
  3. Re: New Aftermarket X2 Expansion Chamber that uses stock headpipe

    The stock 650 pipe is a big POS. It needs a large amount of water
    to make the short pipe length work at a decent rpm range (6000 to
    6500 rpm). Dried out (if memory serves me) it is tuned for ~7500 ...
  4. Re: I'm out of idea's please help ...... 650SX with SBN44, no top end

    I would like to see pictures of the rings (still in the piston). Good shots
    of the rings on the exhaust side. Other pics of piston skirts (in & ex),
    head & cylinder gasket surfaces.

    Thanks
    ...
  5. Re: I'm out of idea's please help ...... 650SX with SBN44, no top end

    There is supposed to be a 1/2 circle (square ring) that locates the
    crank shaft into the proper position inside the crank case.

    Lots of chatter marks from the crank flexing. That doesn't help, ...
  6. Replies
    17
    Views
    13,940

    Re: Does anyone recognize this pipe??

    Both PJS and R&D had a similar pipe. But that one is missing the
    embossed lettering of both companies.




    Which pipe was installed before the FPP?


    Bill M.
  7. Re: I'm out of idea's please help ...... 650SX with SBN44, no top end

    What I am concerned with is the transition from low speed to high speed.
    The low jet, needle & seat and spring combine together to help the carb
    transition from low to high speed circuits.
    ...
  8. Re: I'm out of idea's please help ...... 650SX with SBN44, no top end

    As I recall, you are using John's jet specs:

    135M
    115L
    2.3 seat
    95gr spring

    Did John sell you the Jets, or did you get them somewhere else?

    I like those specs, but I prefer a different...
  9. Re: I'm out of idea's please help ...... 650SX with SBN44, no top end

    Are you power tuning this in the creek?

    The need to jet richer than normal is a sign that there is a problem. You
    should resist the urge to jet richer, and take another look at what you
    have...
  10. Re: I'm out of idea's please help ...... 650SX with SBN44, no top end

    What is the condition of your stock aluminum impeller?

    You resealed the pump and the silicone was dry.



    Bill M.

    Impellers can cavitate through out the entire rpm range.
    And even if there...
  11. Replies
    77
    Views
    4,921

    Re: 92 TS 650 no compression in back cylinder

    I will keep a lookout for one.
  12. Replies
    12
    Views
    5,106

    Re: Yamaha WB1 - Starting Issue

    After you prime the engine, it only runs for a few seconds,
    then the engine quits running? I think it is important that
    the engine only runs on a prime because that indicates that
    the float...
  13. Replies
    4
    Views
    611

    Re: JetMate Carb replacement

    That was a common problem for all 650's in Kawasaki service
    departments. Our diaphragm carbs are adversely affected by
    problems that barely effect float bowl carbs.

    The most common problem is...
  14. Re: I'm out of idea's please help ...... 650SX with SBN44, no top end

    An over-pitched impeller accelerates out of the hole, then levels off.

    Have you modified the stock exhaust? does it have less water going
    into the pipe?

    The stock pipe is too short, but it...
  15. Replies
    77
    Views
    4,921

    Re: 92 TS 650 no compression in back cylinder

    It will need to be machined to fit a 650 pump.



    That isn't necessary. All of the ski's with a rubber mounted carrier bearing
    come without engine shims.



    I have never used anything but...
  16. Re: I'm out of idea's please help ...... 650SX with SBN44, no top end

    What impeller is installed? A steep pitched impeller will make jetting difficult.

    Please test the compression with someone else's compression gauge.
    The stock compression is 165psi, but because...
  17. Replies
    8
    Views
    908

    Re: GSX Limited Fuel Lines

    Glad to hear it!


    Bill M.
  18. Replies
    77
    Views
    4,921

    Re: 92 TS 650 no compression in back cylinder

    As I recall, that part was a sealing ring, possibly made of carbon and (since it
    is missing), may have led to the rubber bellows failing.

    I think it would be a good, to try and find one used,...
  19. Re: 1996 tigershatk 770 Monte Carlo where to start?

    If our watercraft had a regular float bowl style carb, a fuel pump would
    be a good starting point. But the diaphragm carbs watercraft use have
    a complicated way of opening the needle and seat. So...
  20. Replies
    77
    Views
    4,921

    Re: 92 TS 650 no compression in back cylinder

    What part #


    552803
  21. Replies
    1
    Views
    310

    WTB: Seadoo E-box Parts

    These parts are on the front or rear E-box on many SeaDoo's 1996 and down.
    I will take other parts too.

    I also need an overheat buzzer.

    Grommet (4 Ways) (Red)
    570026800

    Grommet (3...
  22. Thread: WTB: E-box Parts

    by wmazz
    Replies
    0
    Views
    275

    WTB: E-box Parts

    These parts are on the front or rear E-box on many SeaDoo's 1996 and down.
    I will take other parts too.

    I also need an overheat buzzer.

    Grommet (4 Ways) (Red)
    570026800

    Grommet (3...
  23. Replies
    10
    Views
    883

    Re: 91 SEADOO GT hard to start....

    Back in 1991, we only repaired the dual carb engines, was that because
    the single carbed SP's still had the small duration RV?


    Bill M.
  24. Replies
    10
    Views
    852

    Re: 97 GSX and GS family parts, new and used

    These parts are on the rear E-box on both skis.

    I also need an overheat buzzer.

    Grommet (4 Ways) (Red)
    570026800

    Grommet (3 Ways) (Black)
    278000193
  25. Replies
    10
    Views
    852

    Re: 97 GSX and GS family parts, new and used

    I need rubber grommets for the e-box wire loom and the black caps
    that hold them in place.


    Bill M.
  26. Replies
    14
    Views
    2,546

    Re: Parting out 1996 XP800 and 97 GTX.

    I need rubber grommets for the e-box wire loom and the black caps
    that hold them in place.


    Bill M.
  27. Replies
    3
    Views
    454

    Re: 1997 Seadoo XP parts

    I need rubber grommets for the e-box wire loom and the black caps
    that hold them in place.


    Bill M.
  28. Replies
    8
    Views
    908

    Re: GSX Limited Fuel Lines

    Was the engine hard to start with the choke?

    In the long run, the choke is more reliable than a primer, and there is no
    performance gain by removing the choke.



    2 thoughts: Either the...
  29. Re: 1996 tigershatk 770 Monte Carlo where to start?

    Do all the simple stuff first.



    If it doesn't start without a prime, that is a good starting point.


    Bill M.
  30. Thread: 720 carbs

    by wmazz
    Replies
    4
    Views
    534

    Re: 720 carbs

    The dual 720 carbs are my favorite carb set-ups. Especially for short
    stroke engines and reverse jetting.

    The 96 GTi is one of my favorite SeaDoo's.

    Damit!, I just like 720's.



    Bill M.
  31. Replies
    10
    Views
    883

    Re: 91 SEADOO GT hard to start....

    The big difference between your problem and the problem we
    repaired back in 91' is back then the RV problem effected new
    SeaDoo's.



    There was a service bulletin back in 91' that covered the...
  32. Replies
    34
    Views
    5,097

    Re: 1989 Js550 won’t start

    Yes, it prevents water from being directed into the flame arrestor.

    Water can damage the pistons if the carburetor ingests water while
    the engine is running.


    Bill M
  33. Replies
    34
    Views
    5,097

    Re: 1989 Js550 won’t start

    On 440/550 piston port engines, the piston to cylinder clearance will
    cause hard starting too.

    Is the stainless steel splash guard still mounted to the driveline?


    Bill M.

    Do you know...
  34. Replies
    10
    Views
    883

    Re: 91 SEADOO GT hard to start....

    It is normal many compression testers to read low, up to 30psi
    low. But a 10psi difference is serious. Sea Doo compression specs
    do not work with automotive home mechanic's rule of thumb.

    A...
  35. Replies
    5
    Views
    562

    Re: 89 300SX Carburetor

    Then you should install a stainless steel impeller before you try
    installing a bigger carb.


    Bill M.

    I have installed 38bn's before, and I was not happy with the mod.

    Bigger isn't...
  36. Replies
    3
    Views
    500

    Re: Need help with hx jet pump

    Are the nuts galled?

    Normally there is no problem. I would just replace them, and
    maybe the bolts too.


    Bill M.

    If they are galled, a tap might get stuck inside the nut, and a
    die will...
  37. Replies
    5
    Views
    562

    Re: 89 300SX Carburetor

    Is the 300 stock?


    Bill M.
  38. Thread: alot of x2 pics

    by wmazz
    Replies
    1,884
    Views
    462,220

    Sticky: Re: alot of x2 pics

    Large Sarge's X2
  39. Replies
    34
    Views
    5,097

    Re: 1989 Js550 won’t start

    Please post pictures of your bad piston.

    It is common for a new top end to seize, if the reason for the previous
    seizure isn't discovered.


    Bill M.
  40. Replies
    5
    Views
    5,590

    Re: Recommendations for a Sport Spec Blaster

    I have watched Jet Ski racing since the late 80's and Jet Ski racing is
    boring to watch, unless it is in the surf.

    I have never built a modified Blaster before, but I have fixed failed ...
  41. Replies
    17
    Views
    13,940

    Re: Does anyone recognize this pipe??

    Last night I found a post by X2Pilot, I was hoping that was you.



    I was hoping that it was intended to be used like a "Limited Pipe"
    for the 750/800 stock exhaust. It is just about the right...
  42. Replies
    17
    Views
    13,940

    Re: Does anyone recognize this pipe??

    What was it designed for? Freestyle?

    Does it use the FPP front cone?

    Bill M.

    Looks like it would use water injection, or a really small impeller?
  43. Replies
    17
    Views
    13,940

    Does anyone recognize this pipe??

    Looks like it might fit an FPP headpipe or possibly a oem Kawi 750 pipe?

    Bill M.

    552670
  44. Thread: strange pipe

    by wmazz
    Replies
    4
    Views
    9,891

    strange pipe

    552669

    44444444444444
  45. Thread: 650sx stumbling

    by wmazz
    Replies
    13
    Views
    1,177

    Re: 650sx stumbling

    Some of what Dsdirect complained about, could be easily explained
    with an exhaust leak or a fuel leak. Both problems would cause:
    "just hit a wall - would not go past."


    Bill M.

    An...
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