Cut the metal away with an air nibbler. No sparks.
Fantastic build you have here, this is going to be a proper wolf in sheeps clothing, awesome keep up the good work :bo:
Wouldn't they be stretch bolts on a modern engine and not need re torquing?Check head bolt torques after its run a heat cycle, the heat expansion of the metal crushes the gasket still further and when it cools off the torque on the head bolts drops back, sometimes quite a lot!
Are the cam seals supposed to go all the way in ? I thought they are supposed to sit flush