zolo,
    If you cut the inner surface, you will be rasing the compression.
I would think this is not a good idea, unless you are going to use
high octane fuel.  I have belt sanded the surface on the heads
to take out pitting, and have not had any leaks.   If this path  is very
deep have it welded.
                                                               Eric

zolo wrote:

>I can't find any reference in the book about the depth the head has to be machined from the face.  And the tolerance that comes with it.  I need to cut a head face where the steam cut a path and would like to know what the proper size should be to recut the inner surface where the metal ring gasket goes.  I am sure it is an important size.
>Zoltan
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