"Was there some material in those holes before you cleaned?"
Yes. But I could easily poke thru with the sharp end of a chainsaw file. It was not until I accessed the water chamber, flushed out the little bit of goop and cleaned off the crankcase side that I could see the shape of the drill holes.
"Do you have more pics of the outside of the clean block?" I can try and take some today.
I can say that compared to what I have seen firsthand and in pics on the forum this A-4 is in good condition. Not counting the leak.
When I first found the leak I assumed that the block itself had rusted thru and there could be other places just as bad. Considering the solid and well defined edges of the holes I think the block may be fine and it was just the plug/filler material that failed.
Dan
S/V Marian Claire
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