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Thread: What is this Lycoming part?

  1. #1
    Coltasaurus's Avatar
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    Aug 2023
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    Default What is this Lycoming part?

    Located on top just behind #3 cylinder on O-320-a1. I glanced through the Lycoming manual with no luck or I missed it.

    IMG_1022.jpeg

  2. #2
    Vagabondblues's Avatar
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    Default Re: What is this Lycoming part?

    oil pressure relief, two types. Both control pressure on a ball. One is screwed in. Other is stack up of washers
    Attached Images Attached Images

  3. #3
    Glen Geller's Avatar
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    Default Re: What is this Lycoming part?

    That engine mount bushing is looking a little sad, are they all like that, and have they been replaced since Geo. W Bush was president?

    GG
    Glen Geller
    1955 PA22-150 "One For Papa!"

  4. #4
    mmoyle's Avatar
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    Default Re: What is this Lycoming part?

    Looks like your oil pressure regulator is screwed all the way out. I found the adjustable oil pressure regulator screwed all the way out on my sonís O320. It needed more oil pressure. Turned the adjuster in quite a bit. I needed to install three full thickness 3/8Ē washers under the nut to make sure the the roll pin was in the castle nut. The oil pressure is a little high. Will probably back out the adjustment a couple turns and install a half thickness washer and a shake proof washer.


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