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Re: Head leak

To: "Danny Varnado" <dannyvarnado@cox.net>, "MG List"
Subject: Re: Head leak
From: "Steve Gorr" <sgorr2@comcast.net>
Date: Thu, 21 Oct 2004 18:31:21 -0500
Cracked head, common, BTDT got the t-shirt. 78 B
----- Original Message ----- 
From: "Danny Varnado" <dannyvarnado@cox.net>
To: "MG List" <mgs@Autox.Team.Net>
Sent: Thursday, October 21, 2004 4:00 PM
Subject: Head leak


> List,
> >I have a very strange water leak problem on my '74 MGB engine.  After
> >driving about 10 miles a small white dried run of water (antifreeze
> >residue) will appear.  It shows up on the spark plug side of the head
about
> >3/8" from the top of the head above and towards the front of #3 spark
plug.
> >I have cleaned off the paint and wire brushed the area .  I have looked
at
> >the area with a magnifying glass and had it dye checked to look for a
crack
> >or pin hole.  I have inspected the area  cold, hot, and hot with the
engine
> >running without finding any indication of the leak.  I have never seen
the
> >leak wet, only the dried residue of the run after driving the car.   It's
> >almost like water loss through osmosis.  The amount of water leaking is
> >almost insignificant.  I cannot detect any drop in the overflow tank
level.
> >My concern is whether or not the head has a very thin spot in the water
> >jacket because of poor casting, corrosion or erosion.  I don't know
wether
> >or not it will get any worse  I'd hate to be going down the road and have
> >it blow out.  Any suggestions would be greatly appreciated.
> Danny V.

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