Coolant leak -hydro locked engine

not to veer to far off course: had W5 heads ported, 50 passes 3I leaking water, sent head back to porter.... he epoxied it. 150 passes later engine dies on return road, epoxy failed flooded cylinder, removed head and sent it to a recommended shop.... guy had brought Brodix sprint car heads back from the dead. He had the head three months and it would basically crumble when he tried to weld on it. Hindsite being what it is I would have acid washed the water jackets, and literally poured a layer of epoxy inside of it.... of course we'd always would have had the "what if it leaks again" issue looming over us. My dad took that short block and put our other set of W5's on it.... two passes later #3 rod broke in two.... the end.