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Bad winter

Discussion in 'Shop Talk' started by Old Doug, Nov 23, 2020.

  1. Old Doug

    Old Doug Senior Member

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    I stocked up on freeze plugs. picture (24).png
     
  2. grandpa

    grandpa Senior Member

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    Must not get very cold there, those are tiny frost plugs.;)
     
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  3. CM1995

    CM1995 Super Moderator

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    What's a freeze plug?:p:D:rolleyes:
     
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  4. Old Doug

    Old Doug Senior Member

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    The only reason they are called freeze plugs is if your engine freezes bad they will pop out and fall to the ground then you need new ones to go in a new block.
     
    sled dog and westerner like this.
  5. kenh

    kenh Well-Known Member

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    Very few people know the original purpose in the engine .
    Sometimes the will hold and the blocks around them. (in years past anyway)
     
  6. 56wrench

    56wrench Senior Member

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    i was taught they are actually core plugs but around here we usually call them frost plugs
     
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  7. Mike L

    Mike L Senior Member

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    I thought they were actually to get the sand out of the block after casting.
     
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  8. Willie B

    Willie B Senior Member

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    I believe manufacturers bore holes in your engine, place these leak makers to encourage you to trade for newer vehicles. I reject that they get sand out of a casting & I utterly reject that they relieve frozen blocks.

    Only good thing ever made from a "freeze plug" is a hole to put a tea cup heater in.
     
  9. kenh

    kenh Well-Known Member

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    Yup, to aid in the removal of sand.
    AKA soft plugs
     
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  10. terex herder

    terex herder Senior Member

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    No, it's not to get the sand out, but that is a secondary benefit.

    The sand core that forms the water jacket has to be held in a precise position. It has extensions that are called core prints that are used to hold the core in the proper position. Those holes are where the core prints extend to the outer mold.
     
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  11. Mike L

    Mike L Senior Member

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    Well there. I learned something new today
     
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  12. Truck Shop

    Truck Shop Senior Member

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    And the Ford 427 were threaded no soft plugs. Which some were lost to freezing.
     
  13. Tinkerer

    Tinkerer Senior Member

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    Me to !
    But, I had to Google --- core print casting. Because i never heard of it before. o_O
     
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