Re: [Chrysler300] G Freeze Plugs

["Tim Tomlinson" <tomlin@xxxxxxxxx>]

Mike, and other club members,
1.  I just have to add my two cents worth here.
2.  I had the engine rebuilt in one of my 64 300-K's about 5 years ago.  The
center right hand plug soon came out under driving conditions (was that an
experience).  The replacement soon followed after being installed by a
knowledgeable Chrysler mechanic.  Then followed an expandable rubber type
which also came out.  Finally the knowledgeable Chrysler mechanic gave
himself a self induced concussion as it dawned on him--he knew Chrysler
sometimes produced oversized "frost plug bores" and fitted oversized plugs
at the factory.  He checked, had a slightly oversized plug in stock and
installed it.  It is still there.
3.  Moral of the story is that the standard plugs don't always work.  They
did in all but one of the bores in the water jacket of the motor--but not
that one.  To may knowledge, they are all sealed in with Permatex as they
are seated to preclude possible leakage, etc.   Personally I have never
installed any--just relating what I ran into and the solution.
Tim Tomlinson
2 300-K's, 1 68 New Yorker
----- Original Message -----
From: Mike Apfelbeck <moparmike@xxxxxxxxxxxxxx>
To: Richard Osborne <richard@xxxxxxxxxxxx>; <chrysler300@xxxxxxxxxxxxxxx>
Sent: Saturday, May 01, 2004 2:42 PM
Subject: Re: [Chrysler300] G Freeze Plugs


I like to use Permatex #1 aviation type (non-hardening) sealer, it works
really well on both freeze plugs and pipe threads. Use a deep socket
slightly smaller than the od of the plug and tap it in place, then you can
"set" it with a blunt ended tool and a hammer. If it was up to me I would
look around for a flanged style plug, they seem to hold a bit better.
Freeze plugs are available in 1/64th increments, it may be worth your time
to check to make sure the guy at the parts counter gave you the right size
before you reinstall it.
Mike

At 12:47 PM 5/1/2004 -0400, Richard Osborne wrote:
>Good Afternoon,
>
>Yesterday afternoon we (Tom Miller and I) finally fired the G for the
>first time. About 4 to 5 minutes into the cam break-in, it spewed a
>freeze plug from the right side cylinder head.
>
>After a few adult beverages and a cool down, I easily popped the
>offending plug from the head. I was surprised to find a "flat" expansion
>plug. By this I mean that it doesn't have a flange.
>
>I just got back from Car Quest with a couple of similar style plugs. Am
>I correct in understanding that the insertion method is to "ping" the
>center of these to make it expand and seat propperly? After looking at
>the previously installed vs. the uninstalled, this appears to be the
>case (I paid the machine shop to do this about 3 years ago, so I wasn't
>the original installer.).
>
>Also, are these to be installed dry? It appearas as though the machine
>shop used some sort of tacky yellow colored stuff on the plugs when
>installed? Does this make sense. Of course, the machine shop was closed
>by the time all of this happened.
>
>Please advise if the concave shaped plugs are meant to be installed by
>hitting in the center as to expand the plug and if you recommend
>installing these dry or with some sort of sealer?
>
>I may try to put a temporary rubber plug in just to see how many others
>will pop out during operation. I'm not too sure I can get it in. We'll
>see.
>
>Best regards,
>
>Richard Osborne
>
>
>
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>
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>
>
>
>





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