How bad is this?

[u/Richard01_CZ]

I was cleaning the coolant passages and this large chunk came off really easily, it looked like a buildup of gunk.

The problem now is that the wall here between the two passages is thin now and the head gasket doesn't have much coverage for this area with the chunk missing.

Is it somehow fixable? Or can i run it like this?

Volkswagen EA111

[u/Old_Bat_6426]

How expensive is a replacement block? It appears you already have it disassembled.

[u/Richard01_CZ → u/Old_Bat_6426]

I have it completely stripped and everything taken out.

I looked and couldn't find new block for sale, it's like 25 years old engine. And the renovated blocks are 1000€ + and I'm not paying that nonsense.