Either that or your overbore has revealed a porosity in the block, with
number 3 cylinder leaking into the water jacket. Needless to say, this
would be unfortunate as it is basically unfixable. But the head gasket
would be the prime suspect.
William E. Snyder had this to say:
>My 1971 BGT engine is overheating. The engine has less than 200 miles since
>a complete engine rebuild. Head and block were machined. New 40 over
>pistons. Street cam. New Carbs. Head made no-lead. Flow test on cooling
>system reveals no problems.
>
>Symptons
>
>1) Within 50 miles water started getting into the oil (White foaming).
>Mechanic retorqued head and leak went away. No overheating at this time.
>
>2) Now engine overheats within five miles of strating from cold.
>
>3) Compression test shows 170 lbs on cylinders 1, 2, and 4. Number 3 shows
>115 lbs. No change with wet test.
>
>4) Running is a little "lumpy"
>
>My conclusion is that my mechanic did a poor job installing the head to
>begin with or that the head gasket was defective.
>
>What does the group think?
--
Max Heim
'66 MGB GHN3L76149
Runs great,
looks particularly bad since some SUV clown backed into it.
If you're near Mountain View, CA,
it's the red one with the silver bootlid.
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