23-01-2020, 08:34 PM
OP here.
Got the manifold off and it's apparent the rear bolt was sheared many years ago, as there's a few threads in the block and the bolt's flush with the manifold surface. I think there's enough thread in the block to enable a secure enough fixing. I need to remove the remains from the manifold. The front bolt's a different kettle of fish. The remaining stub is very thin and corroded and I think it may be preferable to cut it off flush with the block and then drill it out.
Got the manifold off and it's apparent the rear bolt was sheared many years ago, as there's a few threads in the block and the bolt's flush with the manifold surface. I think there's enough thread in the block to enable a secure enough fixing. I need to remove the remains from the manifold. The front bolt's a different kettle of fish. The remaining stub is very thin and corroded and I think it may be preferable to cut it off flush with the block and then drill it out.