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Thread: Primer Lines

  1. #111
    Administrator Steve Pierce's Avatar
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    Default Re: Primer Lines

    Necessity is the mother of invention. We don't realize how easy we have it.

  2. #112

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    Default Re: Primer Lines

    We have just replaced the copper primer lines with Lycoming stainless lines and the new style tee’s. We also installed the new style primer nozzles. We will have to use copper line from the gascolater to the primer. Does anyone know if the original gascolater primer outlet is a 45 or a 37 degree flair?
    Thank you!
    N2709P

  3. #113
    Administrator Steve Pierce's Avatar
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    Default Re: Primer Lines

    The original Weatherhead fittings are 45 degrees.

  4. #114

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    Default Re: Primer Lines

    Thanks Steve!
    N2709P

  5. #115

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    Default Re: Primer Lines

    Quote Originally Posted by N2709P View Post
    We have just replaced the copper primer lines with Lycoming stainless lines and the new style tee’s. We also installed the new style primer nozzles….
    N2709P
    If you have time, would you be so kind as to post some pictures of your new stainless line installation? Also, aproximately how much did it all cost? Thanks!

  6. #116

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    Default Re: Primer Lines

    3BEC7875-068E-4A83-8F1D-E0C62FBAD4D1.jpegF40DEEEC-C751-4F4D-9C91-89A931B09C2F.jpeg8889555B-5666-4E86-96C9-46F682F025DF.jpeg
    The cost was around $1,300. The stainless lines are a bit over $100 each, the three tee’s were stupid expensive. Around $200 each. The nozzles were not too bad. It took about 10 hours to bend the lines and secure them as the lines come straight without bends. The hardest part was to find pictures on how Lycoming ran the lines. If you decide to do this, start with the rear tee at the center of the oil pan and work the lines around to the front. I left the exhaust system off to gain easier access. I will now be using copper lines from the rear tee and gascolater to the primer.
    N2709P
    Last edited by N2709P; 01-15-2023 at 01:18 PM.

  7. #117
    smcnutt's Avatar
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    Default Re: Primer Lines

    We kept having our copper lies crack at the cylinder and kept cutting them off and re-flaring. Finally replaced the line (think it hardened with age) with new from AS or National Areospace Parts Association-aka NAPA. We have coils near the cylinder to give vibration resistance. No problems since. I'll look for pictures.

    Edit: Found it on Aircraft Spruce
    Last edited by smcnutt; 01-15-2023 at 06:31 PM.
    “Seek advice but use your own common sense.”
    ― Yiddish Proverb

  8. #118
    Gilbert Pierce's Avatar
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    Default Re: Primer Lines

    O-320 Primer lines.
    Attached Images Attached Images

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