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Shops that will bend exhaust header pipes

in 912 / 914 Technical Questions 7 years ago
Subject says it all. I'm looking for an exhaust shop that will bend me a new Rotax header pipe. Mine cracked. A lot of aviation exhaust repair shops don't work with small diameter pipes like the ones Rotax uses. thanks for any info. John

  • Re: Shops that will bend exhaust header pipes

    by » 7 years ago

    How about just welding it? That's what most do.

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

      
    Report

  • Re: Shops that will bend exhaust header pipes

    by » 7 years ago

    It was repaired via weld before. It might be possible to reweld it, but I would think the pipe would get weaker each time. This header pipe (#3) is the same one that had cracked before.

    I read one of your previous postings recommending an anti-seize lubricant to go between the exhaust collector and each pipe.

    thanks.

    John
    Thank you said by: Roger Lee
      
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  • Re: Shops that will bend exhaust header pipes

    by » 7 years ago

    If this cracked again then it may mean the first welds weren't properly stress relieved or you have a lot of vibration. Make sure the exhaust studs are properly torqued and the springs on the exhaust pipe are sprung correctly. The engine mounts may need replacement if over 5 years old. Even the prop could cause this vibration and you may never feel it.

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

      
    Report
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