I have an e50 case with a couple of stripped engine stud threads. I was thinking about retapping them to m7, but I can't find bolts or studs long enough. I was able to find some in m8, though. I did the measurements, it looks like theres enough case material to drill the holes out a tiny bit and retap them in m8x1.25mm, but those bolts would be huge, 2mm wider than stock. It seems like it would work, but am I missing something?
It seems like m8 bolts would even fit through the cylinder and head without modifications, but it would be a tigher fit than stock, of course. Are these holes usually bigger than the studs for a reason? Should I put the cylinder and head on a drill press and widen the holes a little?