Re: Poly Block Prep & Freeze Plugs

[Ray Bell <camberkits@xxxxxxxxx>]

There are two kinds of plugs. Usually the earlier blocks have the dish
plug, it's a slightly convex plug with no lip around the
circumference. These you put in 'backwards' then give them a serious
tap and they expand to hold in place.

Generally the later blocks are what we regards as the more regular
style of plug, like a cup you put into the hole bottom first and tap
into place.

There was definitely overlap in the years these were used, I've seen
the early style in '64 and maybe later blocks, and I've seen the later
style in '63 blocks. It might have depended on which plant they were
built in.

They are not impossible to find.

Ray


On Dec 6, 7:25 am, Bill M <y1topbanan...@xxxxxxxxx> wrote:
> I'm stripping down my poly block to send to the hot tank and I noticed
> that the freeze plugs appear to be inserted "backwards".
>
> Did someone install them incorrectly or is this another weird "poly
> thing" meaning that the freeze plugs are made of unobtainuim?
>
> Thought it would be a good idea to ask before I started popping out
> $100 a piece un-replaceable plugs!!
>

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