Stripped down the 2e engine of a 1991 Toyota Starlet EP81 after the headgasket blew in great style. Checked the block and it seems ok, checked with a feeler gauge and a straight edge on the cylinder head and can get 0.10mm feeler under there between cylinders, so I guess this will need to be ground down. However, whilst cleaning the head I noticed some of the head had melted in one of the coolant holes, or at least that's what it looks like. If you see the attached photos, one without the gasket, one with the gasket over it so you can see how the gasket warped, and then a wide shot to see the whole head.
Is this worth going any further with? My fear is that I grind it down, take all the pistons out, clean them up, lap them etc, then after fitting a new head gasket, that defect creates another leak and I'll have done all that work for nothing.