30-08-2020, 07:19 PM
Hi,
I think you will find that the holes you refer to are just where the the two drillings meet and break out into each other.
The centre manifold stud is also interconnected in the same way.
Nothing to worry about, just remember that the stud threads often become a water path if not sealed, it often manifests it as a leak under the head nuts even though the head gasket is intact. I have also had leaks from the manifold studs too.
I think you will find that the holes you refer to are just where the the two drillings meet and break out into each other.
The centre manifold stud is also interconnected in the same way.
Nothing to worry about, just remember that the stud threads often become a water path if not sealed, it often manifests it as a leak under the head nuts even though the head gasket is intact. I have also had leaks from the manifold studs too.