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  1. #1
    RaiderMagic's Avatar
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    Oil Injection. Ratio? XLT 1200

    I've got an XLT 1200 that has 30hrs on it. The carbs have recently been rebuilt along w/ D-Plate, Fuel Accel. Delete, Intake filters.. but I kept the oil injection pump(& clamped the lines).

    I know the factory oil injection is a variable rate based on throttle position. I'm pretty sure this is also not adjustable(?)

    My question is: If the carbs are tuned for more fuel, wouldn't this make the oil ratio slightly less?

    it's probably such a minute amount but I'm curious about this. Say, if the factory ratio @ WOT is 32:1 & the carbs were retuned, could it now be like 30:1 or less?


    -Flame suit is already on. No, I do not want to go pre-mix on this ski, not yet at these hours. Pumps rarely fail, its more often the lines/clamps.

    - I was thinking of adding some 'pre-mix oil' on fill ups to compensate.


    what's your theories? thx.


  2. #2

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    1. You are overthinking it. The point is you will still have X amount of oil at a given rpm either way no matter what jet size you have, and that is enough. That is the important part, the ratio is so when you don't have oil injection you calculate to have enough oil at peak rpm(and waaay too much at idle and low speeds). I converted 1 XLT to premix and will not do it again. 1390 and other race boats are a different story.
    2. The variable oil pump is adjustable, you change the cable adjustment to open the pump up a bit more than the adjustment marks on the cam. However, I will tell you that will cause you to smoke more at idle also.

  3. #3
    you were at Carls, have him update lines and clamps and be done. Leave the pump ratio alone your fine.

  4. #4
    RaiderMagic's Avatar
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    Yeah Scott. Carl did this. Left the lines as they were like new, but added clamps.
    Over thinking it I guess. Just didn't want to go lean( on oil ratio) and damage anything. I ride WOT quite a bit.

    How do you guys feel about a small amount or pre mix added?
    Defeats the purpose of keeping the pump or overboard?
    I like this ski a lot and with 30 hrs. It's like brand new. I want to keep it healthy for some time to come.
    Thx

  5. #5
    RaiderMagic's Avatar
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    Cable adjustment sounds like a good idea. I tend to keep out of the No Wake Zones


    ... I got pulled over yesterday(1st time), for going past a House too fast. There was a boat there. I was doing 15. I stayed right to lessen wake(I'm not an ass) and it's not a No wake zone.
    I got the '100 ft ' warning and lecture.
    The BC was just busting balls I guess.

    - so I've run into the BC 2x now. Every time, the 1st thing they ask me is 'is this your ski?'
    Wtf, do I look like a ski thief or something?
    Last edited by RaiderMagic; 11-07-2013 at 11:09 AM.

  6. #6
    OzarkYamMonster's Avatar
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    Hey ... Raider Magic You ride it .. like you stole it .. don't you Ha Ha

  7. #7
    your ratio is fine and way over thinking

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