Kind of a silly question I imagine, but when installing the engine I neglected to remove the clear packing tape I had placed over the exhaust ports on the heads. I originally planned on keeping them taped until I installed the headers, and didn't realize they were still taped when turning the crank to bolt the TQ converter to the flexplate. The crank made two full revolutions and I assume the air finally bled through the tape and exhaust port. Question is, could I have damaged anything like a valve seal by this happening? I was under the car and someone was turning the crank so I wasn't in touch with the setup from that standpoint.