On the head side of the flange there should be some weld thats been ground flat but not to the flange.This would be on the face of the header flange that contacts the manifold gasget.That weld is ground flat but still raised from the flange to aid in sealing.There should be a bit of weld thats been ground to contact the gasget.Don't belt off all the weld to the flange face or you will have seal problems.

Last edited by xderelict; 05/13/08 11:25 PM.