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  1. Re: wtb steering nozzle for yamaha 650 vxr

    i have one. 30 dollars and it's yours.
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    Re: 550 parts wanted

    i have a stock water box. not sure on how to ship it to you and being paid for the box. i would sell it for 40 bucks.
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    370

    Re: WTB 1991-1995 Yamaha VXR Jet Pump

    I'm pretty sure i have what you need.
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    347

    Re: Wtb js550 motor mount

    I have a couple good used ones. 10 dollars each.
  5. Re: WTB 1991-1995 Yamaha VXR Jet Pump Complete

    I have one from a 92 vxr. It has a solas polished impeller on it. 75 dollars for the pump housing,the prop, and drive shaft.
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    776

    Re: 1985 JS 550 problems

    I know this is a old thread, but if you have not fixed your ski, you might want to try disconnecting the stop start switch wires. I think the orange and white wires going into the switch on the...
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    6,409

    Re: The 8 Thousand Dollar X4

    Hey Matt, I was just wondering if you ever finished restoring my brothers ski (Tommy the "Bomber" Bonacci). I would like to see some photos if you have some? I dug up some more goodies from his...
  8. Re: Need a spare hull in the I.E. or high desert

    I have a 1986 js 550 hull, with the pole and the hood. It is in great condition. I have it stored in my garage in blythe. im in orange county, but i do plan on going there soon. what would you give...
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    Re: ISO this style 550 pipe.

    I would replace that Lock-Tab washer on the crank/flywheel. Hate to see you turn that motor into a basket case if it worked its way loose.
  10. Replies
    12
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    1,474

    Re: 88 JS550 Start before rebuild?

    Once you get it running, a few quick easy mods will help your ski run like it was meant too. (1)- advance the timing all the way (32 degrees). (2)- Plug the rev-limiter and install a restrictor jet...
  11. Replies
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    84,847

    Re: Project HX

    I can tell you that Tommy Bonacci's blaster is completely legal. I helped build it. Tommy is my younger brother, and just a really good rider. He is super nice off the track, but on the race coarse...
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    1,027

    Re: JS550 bottom end opinions?

    That looks pretty bad. Who ever built that low end should have never used red silicone. I personally wouldn't run any of those parts except for the cases.
  13. Re: Early 440 ebox with later 550 stator?

    Yea i think i have ran that set-up before on someones ski. I'm sure it worked out for the guy i did it for.
  14. Re: Congrats to Tommy Bonacci 2014 Sport Spec World Champ1

    i had my hands in on that build. Thanks for noticing.
  15. Re: Tommy Bonacci's Bullet Pre-X4 Factory Racer

    Hey Matt, maybe just lay the stuff out and take a few pictures of what i sent you. I know it would be kind of hard to explain what was in the package. A photo is worth a 1000 words, so they say. lol
  16. Re: Tommy Bonacci's Bullet Pre-X4 Factory Racer

    I'm glad to help you out, keep us posted on the progress of your build.
  17. Re: Tommy Bonacci's Bullet Pre-X4 Factory Racer

    Hey Matt, did you get the package i mailed out to you?
  18. Re: Tommy Bonacci's Bullet Pre-X4 Factory Racer

    i know this is a old thread, but if you are still looking for info on that ski, i have all kinds of magazine write ups and photos. I even have the Bonacci stickers made for only the factory racers....
  19. Replies
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    1,357

    Re: waterbox sealing

    Sorry for the late reply...you can t-off from the front of the head into the tail end of the exhaust pipe.
  20. Replies
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    1,168

    Re: js440 flywheel/timing question

    Just line up the notched line on the stator plate with the with the cases where they come together. If you decide to advance the timing, i think 32 degrees is as much as it will go. On the older js...
  21. Replies
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    1,357

    Re: waterbox sealing

    I know this response is a little late to your post, but you can try diverting more water into the exhaust to make it a little less noisy. (still using the westcoast water box) If you choose to repair...
  22. Replies
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    1,687

    Re: Need help tuning my 550 carb

    Other mods to consider would be>>>milling the head, K&N air cleaner and a stainless steel prop (16 degree pitch).
  23. Replies
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    1,687

    Re: Need help tuning my 550 carb

    Yea that is a good starting point for tuning. You really do need to pull your flywheel off and have the timing advanced. It makes a huge difference in performance and easier starting.
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    1,687

    Re: Need help tuning my 550 carb

    Oh did you mean you have no idea about your timing being advanced?
  25. Replies
    11
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    1,687

    Re: Need help tuning my 550 carb

    Just use a small screwdriver and turn them clockwise until it stops, then back them out 1 and 1/4 turns.
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    1,687

    Re: Need help tuning my 550 carb

    dont mess with the idle, just the low and the high speed ones. I also was wondering if your timing is advanced? if not, it should be advanced all the way. Which ends up being 32 degrees.
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    1,687

    Re: Need help tuning my 550 carb

    dont mess with the idle, just the low and the high speed ones.
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    1,687

    Re: Need help tuning my 550 carb

    set the air fuel mixture screws at 1 and a 1/4 turns out. That would be a good starting point.
  29. Re: Photos - Jettribe West Coast Series Round #6

    That is my brother #201 AKA the Bomber.....great shot Greg.
  30. Replies
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    Re: Rebuilt Engines from Seadoo Engine Shop

    I have worked at a watercraft shop back in the early 90's, and Bill O'neal was right next to me. I can honestly say he is a top notch Sea Doo mechanic. He is also a good person. He has been to our...
  31. Replies
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    Re: Js550 pump impeller questions

    If you decide to install the 440 pump you will need to install the complete 440 driveline!
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    593

    Re: Js550 stop switch

    You can set up the motor with no idle, then you wont need a switch. 2 strokes are better off with no idle because it forces the rider to blip the motor creating better lubrication for the motor.
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    Re: Vintage Race replica graphics

    Look at my profile photo---the kit on it was made by Z-1 graphics (my older brother Larry was the owner of Z-1) Those kits are very close in design to a PJS ski. I still have about 6 or 7 kits in my...
  34. Re: Hey i got a super clean 86 js-550 for sale...take a look.

    I just spoke to the owner of the ski, she said she would take $ 600 for it. My camera is taking some pretty hazy photos, but i will try and get some better shot up soon with a different camera. This...
  35. Hey i got a super clean 86 js-550 for sale...take a look.

    This ski is a girl friend of mine and im helping her sale it. Its been in storage since 1989, Its has a milled head and Mariner ride plate, handle pole spring and advanced timing. This thing still...
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    Re: Js 550 exhaust hose routing

    Ties into the front of the head.
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    Re: Exhaust pipe

    looks like a old coffman pipe.
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    Re: 440js question!!

    My guess is a stator, but i would check the other options first, just to make sure you dont by a stator for no reason because they are not cheap. Your symptoms do sound like a stator going bad.
  39. Replies
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    Re: trued and welded crank?

    Mr Ski is right. If you can get it with in .0005 then thats pretty darn good. I too have seen new cranks way out of wack. And i do like the comment tig it don't mig it!
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    Re: Everything look good?

    You can hone the cylinder lightly and mill your head to raise the compression if you are looking to spend less money.
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    Re: 550 tuning help needed badly

    Try a 2.0 needle and seats, with the pop off pressure set at around 8 pounds, air fuel mixture screws can be set around 1 to 1 1/4 turns out would be a good place to start.
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    4,107

    Re: trued and welded crank?

    It keeps the front of the crank from spreading apart at the pin. I personaly am not a fan of welding that pin, only because you are putting alot of heat on those near by needle bearings.
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    Re: 550 Doesn't like water

    Might be a stator, under a load (in the water) they just dont provide enough spark to burn all the fuel. On the stand (not under a load) they sometimes can run okay.
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    Re: crank seal question

    1211 is for the cases not the crank seals. I like to use a double lip seal for the front one, those heavy flywheels tend to be hard on the front seal. And always put grease on the inside of the...
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    Re: head gasket question?

    Run the green one, it should put your compression right around 180-185 with the Mariner head.
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