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How can l tell the age of my engine

in 912 / 914 Technical Questions 12 years ago

  • Re: How can l tell the age of my engine

    by » 12 years ago

    Hi Roger that is worrying because the only person that serviced the engine was a rotax authorized dealer here in Australia.
    The engine has done 351 hrs with piece missing l didn't think that was possible you can see the marks on the barrel where the spring has been rubbing the barrels must be very tough.
    l will put on so photos.
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  • Re: How can l tell the age of my engine

    by » 12 years ago

    Hi Geoff,

    WOW,

    That's something. The cylinders are Gilnisil. It's a very hard nickel type coating. It takes a Dimond hone to even touch it. If the cylinder is messed up don't bother trying to hone it. Someone may have broke it on the install and didn't catch it. I don't know for sure and that is strictly a guess on my part.

    What symptoms did this engine have that lead you to this find?

    Roger Lee
    LSRM-A & Rotax Instructor & Rotax IRC
    Tucson, AZ Ryan Airfield (KRYN)
    520-349-7056 Cell

      
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  • Re: How can l tell the age of my engine

    by » 12 years ago

    Hi Roger

    The previous owner said that it has always ran rough on start up once it got warm it would run reasonable but during a flight it would run rough then come good he flew it like that for years .
    When l purchased the aircraft the aircraft needs a total rebuild but before removing the motor l ran it to see how it was running it ran so rough that l though it would come off the mounts it had a spark issue the leads where shorting out once l fix that problem it ran reasonable but number one exhaust wasn't very hot l could put my hands around the pipes and wasn't very hot not like the rest couldn't touch them .
    It had plenty of spark l pull the head off ,the exhaust valve had that much carbon build up it is lucky it work then removed the barrel and that is what l found.
    cheers Geoff
      
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