Hey Lawrie;
I defer to your extensive experience with these cars, but you have to
explain to me how this:
"When she arrived home, the car was running rough. A compression test
revealed no compression in one cylinder. Removal of the head showed an
exhaust valve with a pie-shaped section burned away!"
.....is cured by the fitment of a hardened valve seat!
Happy New Year to you too...
Dave
>From: "Lawrie Alexander" <Lawrie@britcars.com>
>Reply-To: "Lawrie Alexander" <Lawrie@britcars.com>
>To: "Barrie Robinson" <barrier@bconnex.net>, "Rocky Frisco"
><rock@rocky-frisco.com>, <mgs@autox.team.net>
>Subject: Re: Blown Head gasket
>Date: Mon, 31 Dec 2001 12:26:07 -0800
>
>Barrie............
>
>Two observations - first, I have been a professional mechanic, specializing
>in repairing British sports cars, since 1975. In those 26 years, I have
>encountered many instances where valves have burned and heads have been
>damaged as a result of using unleaded fuel in engines not designed for
>them.
>
>Second, typically it isn't "hard" driving that causes valves to burn.
>Rather
>travelling at steady speeds for hours at a time is more often the cause.
>Example: I rebuilt a TC engine for a customer who then drove from Malibu to
>Vail, Colorado and back, in company with a group of enthusiasts attending a
>GoF West event. When she arrived home, the car was running rough. A
>compression test revealed no compression in one cylinder. Removal of the
>head showed an exhaust valve with a pie-shaped section burned away! This
>just 3,000 miles or so after a professional rebuild. Now, you have to know
>
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