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Re: Can't get freeze plug fitted

To: mgs@autox.team.net
Subject: Re: Can't get freeze plug fitted
From: Bullwinkle <yd3@nvc.net>
Date: Mon, 29 May 2000 23:36:58 -0700
Yes, the "Freeze Plugs" holes original purpose was to provide
webs to hold the inner sand cores in place.  I suppose they got
to be called "freeze plugs" when they sometimes would pop out
when the coolant froze in those pre ethelyn glycol days.  Older
blocks had thinker walls, so mayber they were strong enough to
resist cracking until the plugs popped out.

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