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  1. #1

    new engine break-in advise...do u agree?

    Hi Guys,

    I'm about to break-in a 07 SC RXT & RXP and have been reading different things and suggestions about break in. Thanks to this site I'm not going to listen to my curent dealership and use the learner key for the first 10 hours.

    This thread mentions that 80% of the intial pistons rings seal occurs during the first hour of actual running time.

    Please take a read on this break-in info and let me know your oppinions.
    http://www.mototuneusa.com/break_in_secrets.htm

    Many thanks,
    Scottyj


  2. #2
    Quote Originally Posted by scottyj View Post
    Thanks to this site I'm not going to listen to my curent dealership and use the learner key for the first 10 hours.
    What retards!!!!! They told you to only use the learning key for the first 10 hours???!!!

    Do not use the learning key during the first ten hours. You need to be able to vary your speed and RPM more. And yes, that is a good site.

  3. #3
    formerly Gold06RXP Turbo Nick's Avatar
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    Just vary the throttle often and do some short wide open runs occasionaly to seat the rings.

  4. #4
    REID2168's Avatar
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    3 to 4 hours of varied throttle toppping out throttle on occassion for SHORT BURSTS ONLY 1 to 2 seconds! then after that RIDE IT LIKE U STOLE IT! this is of coarse AFTER U CHANGE YOUR CERMIC WASHERS TO METAL! PERIOD!

  5. #5
    RXPkid,

    Yes the Sales Manager insisted that what the factory advised them. I wonder how many people follow such incorrect advise. The factory should test these dealerships to see what they really know and don't know about their products.

    Guys thanks for the feedback and keep it coming.

    Scottyj

  6. #6
    REID2168's Avatar
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    HEY HEY SCOTTYJ U DA MAN NOTHIN ELSE TO SAY!!!!!!!! im a rhymin fool! foolisious anyway! bet!!!!!!!!!!!

  7. #7
    My new toys at work bruinsrme's Avatar
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    2004 owner manual
    BREAK-IN PERIOD (page 62)
    CAUTION: Scrupulously follow the instructions of this section. Failure
    to do somay reduce the engine’s life and/or performance.
    With Sea-Doo watercraft powered by Rotax® engines, a break-in period of
    10 hours is required before continuous operation at full throttle.
    To achieve a good break-in, throttle lever should not be depressed more
    than 3/4, however, brief acceleration and speed variations contribute to a
    good break-in.
    CAUTION: Continued wide open throttle runs and prolonged cruising
    without speed variations should be avoided, this can cause engine
    damage during the break-in period. NOTE: Never add oil

    2007 owner manual RXT
    BREAK-IN PERIOD (page 66)
    CAUTION: Scrupulously follow the instructions of this section. Failure
    to do so may reduce the engine's life and/or performance.
    With Sea-Doo watercraft powered by Rotax® engines, a break-in period of
    10 hours is required before continuous operation at full throttle.
    To achieve a good break-in, throttle lever should not be depressed more
    than 3/4, however, brief acceleration and speed variations contribute to a
    good break-in.
    CAUTION: Continued wide open
    throttle runs and prolonged cruisingwithout speed variations should
    be avoided, this can cause engine damage during the break-in period.
    NOTE: Never add oil in fuel tank during break-in period.

    No mention of the learners key in the break in period in 2004 or 2007 owners manual.
    Last edited by bruinsrme; 10-14-2007 at 01:54 PM. Reason: added page numbers

  8. #8
    YoYamma's Avatar
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    scottyj, I would not run it WOT during the first 10 hours (not even for a little time) you see the manual SPECIFICALLY says not to go over 3/4 throttle... keep the rpm's moving up and down, variation in speed is good.

    No learning key during break in—throw the learning key in the drawer and follow the manual, bruinsrme has laid it out for you—vary the rpm's but don't break the rules on break in, enjoy your new skis...

  9. #9
    formerly Gold06RXP Turbo Nick's Avatar
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    You have to have some wide open throttle to seat the rings during break in. If not they wont seat and the engine will take longer to break in. W/ modern machining / tolerences on new engines the only thing that breaks in is the piston rings to the cylinder walls. That is also why engine builders recammend not using synthetic oil during the break in period. Because it does not allow the rings to seat properly because its to slick. The rings need high cylinder pressures pushing them out against the cylinder walls to seat them. This is why it is good to have some WOT during break in, to push the rings against the cyl. walls w/ max force. If another part of an engine is wearing (rod bearings, main bearings, cam, etc..) during the break in period something was not machined properly during the manufacturing process.

  10. #10
    Quote Originally Posted by YoYamma View Post
    scottyj, I would not run it WOT during the first 10 hours (not even for a little time)
    I totally disagree. If you want a strong engine you have to do some quick wide open bursts. Not long at all, but you must do them. Read that webpage, it is vey informative and you will see why.

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