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Thread: Welch plugs. Kill me now.

  1. #11
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    Has kimsl70 got the correct plug type if his information showed 'dome out'? Was there a machined landing in the hole as described by JDNSW - hinted at by the fact you can't get the plug in further? Either way I've learnt something.

  2. #12
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    The type of plug in the photograph is a "Cupped" Welsh Plug, the other type mentioned is a "Dished" Welsh Plug.
    Welsh Plugs can also be referred to as Core Plugs, Freeze Plugs, or Expansion Plugs.

    Cheers, Mick.
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  3. #13
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    Quote Originally Posted by workingonit View Post
    Has kimsl70 got the correct plug type if his information showed 'dome out'? Was there a machined landing in the hole as described by JDNSW - hinted at by the fact you can't get the plug in further? Either way I've learnt something.
    So have I. It’s been great.
    Kim

    'Maggie' 1960 Series 2 88, 2.25 Petrol 3MB

  4. #14
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    edited, not sure why the goose quote got here

    Quote Originally Posted by Kimsl70 View Post
    So have I. It’s been great.
    no but on some engines there is a lip so when you beat the plug in it automatically tilts in the right direction..

    theres a non LR breed of engine whence if you do that the plug will sit square on whats behind it and you have exactly no chance of getting it out in the normal fashion. Much inventiveness and application of mechanics words at the appy who got it wrong is required.

    And no, you cant just beat it till it bends, the casting behind it breaks off, Which in turn means
    1. 1. if the piston was at BDC you can now inspect the crown
    2. 2. you have a dry liner inserted and dont really need to stress too much
    3. 3. you wanted to do a dry liner conversion
    4. 4. technically its now going to be a wet liner conversion.
    Dave

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  5. #15
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    G’day all. The great people at Turner Engineering came up with NOS Welch plugs appropriate to my block. Thanks for all the help and guidance. I really appreciate it.
    Kim

    'Maggie' 1960 Series 2 88, 2.25 Petrol 3MB

  6. #16
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    Quote Originally Posted by mick88 View Post
    The type of plug in the photograph is a "Cupped" Welsh Plug, the other type mentioned is a "Dished" Welsh Plug.
    Welsh Plugs can also be referred to as Core Plugs, Freeze Plugs, or Expansion Plugs.
    Welch.

    The Welch plug was originally designed in the 1900s at the Welch Motor Car Company in the United States.
    Core plug - Wikipedia
    Ron B.
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  7. #17
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    Quote Originally Posted by p38arover View Post
    Thanks for that. The Welch plugs I got fit perfectly.
    Kim

    'Maggie' 1960 Series 2 88, 2.25 Petrol 3MB

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