Here are some photos of a recent repair we did to a damaged R67 block.
The stud hole is cracked.
The engine case is bent nearly a millimeter.
The case is cleaned and bead blasted.
The cracks are stop drilled and cylinder face is tig welded and peened.
The new face is flycut.
The cylinder studs are located using DRO and steel timesert threads are installed.
The repair is complete.