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  1. #1
    novaboy's Avatar
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    different break in procedure

    I've recently read an article in the web about brek-in procedures.
    I remained really interested attending that the procedures suggested for break-in was exactly the opposite from what recommended in the majority of manuals.
    Instead of a "soft" break-in with a progressive load on the engine it was suggested a "hard" one with a sequences, after a proper warm-up, of variable WOT runs and cool down pauses.
    The object is to obtain a perfect seal between piston rings an cylinder liner.
    What do yopu think of this type of approach? Do you agree with it or it could be dangerous with a 2 stroke PWC engine?
    Any contribute to the thread is welcome!!


  2. #2
    sleeplessnMS's Avatar
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    ~double oil~ 20minutes up to 5000 cool off. 2nd 20mins midrange hits from down low. cool off. 3rd 20minutes midrange to almost peak ~up and down never consistannt speed/rpm's~ cool off. then run it like ya stole it! pour in normal gas/oil mix drink beer ride......

  3. #3
    zpeters's Avatar
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    Would really like to see more information on this.. Surpised people haven't stickied a thread like this...

  4. #4
    Moderator beerdart's Avatar
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    A lot depends on the type of cylinders and rings. Plated vs Sleeves. Every builder has there methods and reasons.

  5. #5
    One day at a time..... N8R's Avatar
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    32:1 on a full tank--on and off the throttle short busts under 5,000 rpms for 30 mins rest 20 then 30 on and off till the gas is on the buzzer...

  6. #6
    sleeplessnMS's Avatar
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    GETTING READY TO PUT THE SMACK DOWN ON ALL THESE NEW PORTED 1300 AND A FEW 1400 SKIS)
    Dang! Cant wait to see this at MBV!!!!!

  7. #7
    One day at a time..... N8R's Avatar
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    Quote Originally Posted by sleeplessnMS View Post
    Dang! Cant wait to see this at MBV!!!!!
    me to found alot more speed( damn celefane in my reeds)

  8. #8
    WATER WOODY's Avatar
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    15 minutes 0-1/4 throttle bursts
    15 minute cool down
    15 minute 0-1/4-1/2 throttle bursts
    15 muntire cool down
    15 minute 0-1/4-1/2-3/4 bursts
    15 minute cool down
    15 minute 1-1/4-1/2-3/4-full bursts
    15 minute cool down

    I run Yama-lube 2W for the break-in 32:1

    Run 1 full tank doing the suggested above,ALWAYS KEEP YOUR RPM VARIED... Keep the engine running fat for the first tank.

    Use a 1200 grate to help keep the engine fron coming unhooked.
    I also run a smaller prop for the first hour to take some of the load off the engine.After the one hour,you need to get heat built up! Put the bigger prop in and load the motor down,this extra load will spread the rings harder and seat them.Very important!

    This is just 'my way' of an engine break-in.Been working great for years.Other tuners/builders have different ways,im just sharing what 'I DO'.

  9. #9
    CHICKA WAH WAH bren's Avatar
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    Quote Originally Posted by WATER WOODY View Post
    15 minutes 0-1/4 throttle bursts
    15 minute cool down
    15 minute 0-1/4-1/2 throttle bursts
    15 muntire cool down
    15 minute 0-1/4-1/2-3/4 bursts
    15 minute cool down
    15 minute 1-1/4-1/2-3/4-full bursts
    15 minute cool down

    I run Yama-lube 2W for the break-in 32:1

    Run 1 full tank doing the suggested above,ALWAYS KEEP YOUR RPM VARIED... Keep the engine running fat for the first tank.

    Use a 1200 grate to help keep the engine fron coming unhooked.
    I also run a smaller prop for the first hour to take some of the load off the engine.After the one hour,you need to get heat built up! Put the bigger prop in and load the motor down,this extra load will spread the rings harder and seat them.Very important!

    This is just 'my way' of an engine break-in.Been working great for years.Other tuners/builders have different ways,im just sharing what 'I DO'.
    did this on sat with the XLLTD (1300 Kerry Hibdon in it) and she purrs like a kit...... actually no..she goes like a feckin banshee

    great way to run in a motor !

  10. #10
    WATER WOODY's Avatar
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    Quote Originally Posted by bren View Post
    did this on sat with the XLLTD (1300 Kerry Hibdon in it) and she purrs like a kit...... actually no..she goes like a feckin banshee

    great way to run in a motor !


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