Porting 596 Heads

trigger_andy said
DISASTER!

Started on the second Head and within the first two hours I’ve broken through into waster. This head has a few noticeable casting flaws and as you guys can see in the picture there was a bad one right behind the valve guide. It was noticeable quite a bit higher up and I chased it down. Very porous and ground out very easily.

Anyway, I’d there anyway of saving this head?

Would liquid metal work or could it weld up as it’s such an accessible area?

View attachment 1715109182

Removing that much from behind the guide was unnecessary. Tapering it is okay, but no help taking it out completely.
That head, toss it. You could try block rock, but you'd have to find a way to isolate the rock to that port and not the enitre head and or around the exhaust ports.
I will pull a tester head from under the bench and show you.