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  1. Jul 8, 2023, 08:27 PM #1
    Altair
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    Making pistons from scrap aluminum - GIF

    Making pistons from scrap aluminum.




    Previously:

    Ship engine piston cutaway - photo
    World's largest piston - photo
    Piston head table - photo
    Casting and machining pistons - GIF
    Piston ring pliers - GIF

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  3. Jul 8, 2023, 09:55 PM #2
    desbromilow
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    what are the small holes below the piston rings grooves for?

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  4. Jul 9, 2023, 08:18 AM #3
    Frank S
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    Quote Originally Posted by desbromilow View Post
    what are the small holes below the piston rings grooves for?
    If you are talking about the holes below the oil ring perpendicular to the gudgeon pin, these are to allow lubrication to the piston skirt.
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  5. Jul 9, 2023, 04:19 PM #4
    desbromilow
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    Quote Originally Posted by Frank S View Post
    If you are talking about the holes below the oil ring perpendicular to the gudgeon pin, these are to allow lubrication to the piston skirt.
    Frank, Yes - thank you for explaining!!!!!! I figured they were for some type of lubrication, but didn't know what they were lubricating.

    thanks again,
    Des



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