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  1. #1

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    Bough maybe the worst '99 Ultra 150 - Help?!

    This ski may or may not have been properly secured during a storm and spent a few days bobbing around the beach (explains all the sand in the pics).. and now its mine!
    Give junk a chance right?

    Anyways I'm pretty versed in powersports but not particularly the Ultra 150.

    There are some things missing / changed/ not stock that I can identify already I'm hoping some of you gurus can help give me some more info.

    Carbs are not stock, look like mikunis, no choke, throttle position sensor hanging.



    The plug is just hanging over the battery, is something missing?


    this small 2 wire plug (hard to see) is cut and taped together. Common mod?


    Cylinders are marked, this one states "HC". High compression? anyone recognize anything like that


    I'm pulling the motor to clean the sand out of everything and inspect the engine, hopefully the case isn't full of water TBD.
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  2. #2
    steve45's Avatar
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    I Welcome aboard, Wiskey!

    I hope they paid you to take it.

    I can almost guarantee that the engine has water in it. If so, the crank is toast. The crankcase is probably OK, which is a valuable commodity these days. The jet pump is also worth some money. I seriously doubt that the display will work, that's big bucks.

    I have no idea what the cut & taped wire is.

  3. #3

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    Quote Originally Posted by steve45 View Post
    I Welcome aboard, Wiskey!

    I hope they paid you to take it.

    I can almost guarantee that the engine has water in it. If so, the crank is toast. The crankcase is probably OK, which is a valuable commodity these days. The jet pump is also worth some money. I seriously doubt that the display will work, that's big bucks.

    I have no idea what the cut & taped wire is.
    thanks Steve45,

    display works great. 136 hours on it.

    Any idea what gets plugged into that 6 or 7 wire connector above the battery i have shown?

    Also in regards to the crank, Anyone rebuild them? DIY or are they a must to send out?

  4. #4
    Nothing thats a service port.

    Damn it looks like a mess

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  6. #5
    steve45's Avatar
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    The display works??? Wow! That's great!

    There are several places that rebuild the cranks, but it's been so long that I've had it done that I don't remember who did it. I'm sure somebody else here will chime in.

    I have no idea what that plug goes to. Sorry, I'm not being much help...

    By all means get a service manual! There are some peculiarities about the 1200 engine that you really need to watch, such as putting oil in the balance shaft galleys, making sure that the oil lines go to the correct places (they're not all the same), etc. The cylinders on that engine are nikasil plated. Some will disagree, but I think stock is the best way to go on cylinders.

    There are some mods that are really necessary, such as the Triple Pisser Mod.


  7. #6

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    Quote Originally Posted by turboman412 View Post
    Nothing thats a service port.

    Damn it looks like a mess
    Beyond a mess, i could have filled a 5 gal bucket with sand, not done yet.
    Great news about it being a service port, thanks!

    Quote Originally Posted by steve45 View Post
    The display works??? Wow! That's great!


    By all means get a service manual! There are some peculiarities about the 1200 engine that you really need to watch, such as putting oil in the balance shaft galleys, making sure that the oil lines go to the correct places (they're not all the same), etc. The cylinders on that engine are nikasil plated. Some will disagree, but I think stock is the best way to go on cylinders.

    There are some mods that are really necessary, such as the Triple Pisser Mod.
    I downloaded the manual yesterday. I think i have to replace all bearings, seals, lines.
    Someone modded this ski pretty heavy at one point, non stock items i've found so far.
    Mikuni carbs
    Pumper to replace choke
    R&D ride plate
    Worx intake grate.

    pulling the motor later today, will keep updated

  8. #7
    PWC Engines rebuilt my crank. They are in NY. Here is a link: https://pwcengine.com/kawasaki-ultra...lt-crankshaft/

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  10. #8
    steve45's Avatar
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    If the Mikunis are in good shape, I might try running them.

    If you go back to the original Keihin carbs, you'll need chokes to get proper fuel metering. You can add separate primers if you want.

  11. #9

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    Quote Originally Posted by steve45 View Post
    If the Mikunis are in good shape, I might try running them.

    If you go back to the original Keihin carbs, you'll need chokes to get proper fuel metering. You can add separate primers if you want.

    The mikunis appear to be Sbn 46, i do plan on running them as i don't have anything else. there is a pumper already hooked up in place of the choke.

    I also feel pretty lucky, cracked the motor open yesterday, it looks like the crankcase was filled with 2 stroke oil, whoever did that is my hero because the crank looks perfect. It also looks like the cylinder has been ported along with some Weisco pistons, measuring out at 80mm.

    I think i might just slap some new rings, seals and call it a day. Is there a trick way to know if the head has been milled to higher compression besides getting the measuring tools out?

    filled with oil





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  12. #10
    steve45's Avatar
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    Looks like a diamond in the rough!

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