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Thread: RXT-X

  1. #1

    RXT-X

    HI guys first post...

    Just bought an RXT-X and had a few questions -

    1. Is 93 octane definitely required (my other ski is a 2005 GTX 155hp on 89)

    2. What oil is everyone using for changes (I do my own mx, use castrol gtx)

    3. Anything special for break-in? might not have much riding time left this season and will be storing soon

    picking it up in 2 days, cant wait!


    Thanks - Great looking forum!


  2. #2
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    Quote Originally Posted by WinniCandle View Post
    HI guys first post...

    Just bought an RXT-X and had a few questions -

    1. Is 93 octane definitely required (my other ski is a 2005 GTX 155hp on 89)

    2. What oil is everyone using for changes (I do my own mx, use castrol gtx)

    3. Anything special for break-in? might not have much riding time left this season and will be storing soon

    picking it up in 2 days, cant wait!


    Thanks - Great looking forum!
    Yes, premium fuel is required. I used castrol gtx, works fine. Do a search for break-in, theres some good articles here on how to do it properly. It's critically important that you break it in properly.

    I started out riding it at about 5000 rpm for about 3minutes or so, then I would nail the throttle for a few seconds, and back down. I did this, varying the rpm, and nailing the throttle for about 15 minutes. Then I shut the ski down and just sat for another 15 minutes. This is a heat cycle. Do this a couple of times and you should be alright. Your trying to seat the rings. Also, for the first 10 hours, don't run wide open for long distances, and when riding, vary the rpm's....cruise at 4000rpm..then 5000rpm...just go up and down, don't stay on one rpm too long.

    Also, the ECU will limit the max rpm til you have about 8 hours, or so I'm told. Mine didn't.....just remember, after 10 hours, it will haul ass...and the more you break it in, the faster you'll go.

    Stock, they do around 67mph....I have mine up to 73mph with just some bolt on parts from R&D. I have the Performer Kit.....

  3. #3
    YoYamma's Avatar
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    Welcome to the dark side Seadoo brother...

  4. #4
    Village Idiot projektrage's Avatar
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    i run 92 octane sometimes... damn wawa gas... seems to run fine for me... other than the problem of my crappy prop...

  5. #5

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    Ive run mine fine on 89,Sometimes thats all you can get when you burn a full tank out on the water.

    Follow the standard procedure for break in.Dont make any wide open throttle blast for more than a few second,and vary engine speed.
    try not to maintain a certain rpm for long.
    As far as ring seating,Ive been running forced inductions motors for 18 years and with a boosted motor you can seat the rings in less than a minute applying boost to them.

    As far as oil,Ive changed at the 10 hour mark and just used the
    seadoo oil,Its a few more bucks,but how often are you really changing it anyway.

    BTW i just bought my RXT-X and it is a freakin blast!

  6. #6
    Village Idiot projektrage's Avatar
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    i've heard... not sure if it's true or not... but if you do put 89 in it... the ECU will compensate... may not run as fast... maybe someone can verify that if it's true or not...

  7. #7

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    The engine from what i understand has a knock sensing device.
    If you run 89 there is a CHANCE for detonation,The motors are intercooled
    and depending on your outside temp and water temps,you will most likely not see any detonation,if it does the ECU will pull some timing to keep it in check.
    Ive run 89 for 2 straight tanks and honestly did not feel any power difference and in all actuality if it is not detonating on 89 it will make more horsepower and the 89 will burn faster than the 93.OVER octaning a motor does nothing more than make the fuel burn to slow and ultimatley make less power.
    The water I run in has never been higher than 77*.

    Sea Doo RECOMMENDS 93 and it will keep it from seeing detonation at stock boost levels,but it is not REQUIRED.

  8. #8
    YoYamma's Avatar
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    Guys, don't use the lower octane as a normal fuel... it's okay avery now and then if you're in a pinch but Jerry told me it will mess things up if you use it all the time. It's not worth the small amount of savings...

  9. #9
    Village Idiot projektrage's Avatar
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    is 92 bad?

  10. #10

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    I agree momma.I only use it for refills out on the water.
    And in essence,it is always mixed with the 93 that is on the tank
    as i dont run it all the way out.

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