Frank, thanks for taking my call at work. Here's the pictures of the "cancer" I was referring to. This is the driver's side head, between 4 & 6. From what I described on the phone, Frank thinks it's glycol etching, which I've seen before but never knew what to call it. I'm inclined to agree. I've got a call in to my machinist to get his opinion... It appears to be just in the hole opening in the head gasket and looks like it will be contained with proper clamping. But, I'd like some (Frank, KevinC, Eddy, and anybody else that would like to weigh in <img src="/forums/images/graemlins/smile.gif" alt="" />) eagle-eyed opinions...

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And here is the corresponding galley in the block.

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Fasteddy's advice is occasionally sound...