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Thread: 99 ultra 150

  1. #1

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    99 ultra 150

    I bought a 99 ultra 150, guy blew it up and traded it in and the dealership put in a new 1200cc. I have parts that came with the ski and don't know if I should put them on it. blackjack carbs, ada head, triple pipes, vforce reeds, reed spacer, and timing advancement boxes with lots of wires. Its stock now and has r&d sponsons, extended ride plate, nozzle, and inlandjetsports waterbox. the speedometer reads 74mph, but I guess it really only goes sixty ?? how fast does it go now the way it is ? I was told to get rid of the parts cause it will just wear the engine out faster.


  2. #2

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    Quote Originally Posted by ultra150JCT View Post
    I bought a 99 ultra 150, guy blew it up and traded it in and the dealership put in a new 1200cc. I have parts that came with the ski and don't know if I should put them on it. blackjack carbs, ada head, triple pipes, vforce reeds, reed spacer, and timing advancement boxes with lots of wires. Its stock now and has r&d sponsons, extended ride plate, nozzle, and inlandjetsports waterbox. the speedometer reads 74mph, but I guess it really only goes sixty ?? how fast does it go now the way it is ? I was told to get rid of the parts cause it will just wear the engine out faster.

    It depends on what you want? With that combo the only thing that is going to require you to refresh your engine sooner is the triple pipes IMO but to go back to a single piper your going to give up ALOT if this ski is tuned correctly. What I mean if this ski is tuned correctly with this stuff on it it should be in the mid 70's. As for now, with your ski being stock your prob in the 64ish range + or - 1 or 2. If I had that ski and those parts I'd throw everything on there but the pipes and see how you like it. If you want more then go with with pipes. Whatever you do definitely put the Blackjacks on, you'll need spacers with them, the waterbox is junk IMO so take it or leave it, if you put the pipes on your bolting on alot more hp and your going to have to change your impeller, pitching, and if it were me possiby pump.

  3. #3
    btldigger's Avatar
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    Wow what a find! I tend to agree with stxr throw everything at it but the pipes. Get used to ridding that setup before you do pipes. With those parts you should have a 70mph ultra. Add the pipes and you should hit 77-78. You do need to check the domes in those heads to see what size they are. There is a # engraved in the back side that tells what it is. If the previouse owner was running the pipes it probably already has a solas 16/20 in it. You can pull the pump and look at the prop if its a solas the pitch will be rite there on the side. The timing adv box with all the wires is probably a electronic water injection control instead. It probably has a factory pipe or advent cdi, only way to tell is to open up the ignition box and see.

  4. #4

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    OK I talked to the original owner and he said it would do 80.7mph on gps. he said the "dreamometer" read 91mph. The timing advancement kit would allow it to run upto 8000rpm, but could set it back to 7800rpm, "what he did" He said I would have to run 108octane, and the domes in the head were made for that octane. He said the 99 year model was the fastest ultra stock, due to the advanced timing and the $13.95 sparkplugs a piece. He said it runs 67-68mph the way it is now, cause its got hull mods. He told me not to put the parts on it, to leave it stock, last longer. But I am tempted, I'm afraid to put them on now just the fact that money is tight cause I'm in a Radiology program in college and its all I got to keep me sane on the weekends. LOL. But I think I will hold on to them and next year when I graduate let her fly !!! Took it out this morning, man these are a blast to ride, they seem fast as shit. The waterbox has a deep low idle tone, but sounds stock at full throttle, he said I could adjust it for more sound ??? Thanks for the replys guys !!

  5. #5
    axgrider73's Avatar
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    Did they rebuild the original enigne or did the dealer replace it with a remanufactured one?

  6. #6
    btldigger's Avatar
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    Sounds like those domes are 36 cc since it needs 108. You could change them to 42 cc domes and run 93 octane pump gas. With that setup you could run the cheap plugs with the 99 ignition.
    You probably should take some time to get used to ridding the ultra. It tends to be more challenging to drive than most other skis you may have driven. Bone stock it is as fast as the newer supercharged skis. I still remember one ultra owner saying it was like ridding a pissed off paper plate. Since yours has sponsons and a plate it probably isnt that bad, those help alot. Post some pics, we like ski porn

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    Hmm, I wonder who's ski this was? Where do you live?

  8. #8
    axgrider73's Avatar
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    Quote Originally Posted by STXR814 View Post
    Hmm, I wonder who's ski this was? Where do you live?
    Sharpsburg Maryland??

  9. #9
    Last summer I purchased a 99 ultra from a friend of mine, my 1st pwc. I new I wanted to tweek the ski so I slowly purchased a shredmaster, ext nozzel, b.h. sponsons etc. The more I thought about it I felt I wanted more power so I purchased a set of buckshot 50's & a few months ago I found a set of tripple pipes, ecu etc. Personally, I wanted to get it up & running & not screw with adding this or that later. I unfortunantly haven't installed anything on the ski yet, winter project I guess.

    I do NOT want to use anything but pump gas so I am keeping stock heads

    O yea.... the plugs are NOT $14.... they are around $50 ea I beleive from my local shop. I am using a lesser NGK plug though which I replace every year.

  10. #10

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    Quote Originally Posted by Viggen View Post
    Last summer I purchased a 99 ultra from a friend of mine, my 1st pwc. I new I wanted to tweek the ski so I slowly purchased a shredmaster, ext nozzel, b.h. sponsons etc. The more I thought about it I felt I wanted more power so I purchased a set of buckshot 50's & a few months ago I found a set of tripple pipes, ecu etc. Personally, I wanted to get it up & running & not screw with adding this or that later. I unfortunantly haven't installed anything on the ski yet, winter project I guess.

    I do NOT want to use anything but pump gas so I am keeping stock heads

    O yea.... the plugs are NOT $14.... they are around $50 ea I beleive from my local shop. I am using a lesser NGK plug though which I replace every year.

    So what is your question? You've got this stuff now and don't know what to do is that it?

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