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Freeze plugs

To: "British Cars" <british-cars@autox.team.net>
Subject: Freeze plugs
From: "Rob Reilly" <reilly@admail.fnal.gov>
Date: 31 May 1994 12:44:25 -0600
                       Subject:                               Time:12:44 PM
  OFFICE MEMO          Freeze plugs                           Date:5/25/94
>Just as I thought I was getting a hang of the 'Merkun jargon on all these,
someone has to throw in a "Freeze Plug".
> called in
the UK, a Welch Plug (Spelling?).

Ha, ha, ha.
Yep, the old-timers called it a "Freeze plug" in that if the water freezes in
the winter the ice will push the plug out, saving the block from cracking....if
you're lucky.
The more usual name is "Core plug" in that the holes are to let out the broken
up pieces of the sand "core" used in the casting process to form the water
passages.
I've never heard "Welch plug" in the US. Perhaps named for the inventor?




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