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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