Piker Porting (Intake Manifolds)
You do that, or your son? I forget who does the actual work that you occasionally post about.:poke:
Gasket matching
gasket manufacturers make the perimeter of the gasket sealing surface larger than the opening that is to be sealed so that the gasket will accommodate the normal casting and machining shift that occur. There is no need to blow out the cylinder head port opening and the intake port opening to match the size of the gasket.
What you do want to do is check to make sure the intake port walls align to the cylinder head port walls.
To do that get a single piece of paper about the thickness of normal copy paper that will cover the length of the cylinder head port deck from end to end and top to bottom.
Punch holes that fit tightly to a couple of the mounting bolts and insert the bolts to hold the paper in position. Then take a light hammer and tap on the port edges to mark and cut the port openings out. Write on the paper template: intake face and front and rear in the correct areas. Then remove the paper template and place it on the correct intake face in the position that would match the cylinder head using the bolts to align the template.
What you now have is a visual that shows how well that cylinder head fits to that intake. If there are walls that do not match perfectly, clean then up so they do match.
For a v engine, do repeat for the other bank.