it is the head. But the side of the head, not visible in the example picture you posted. That makes sense. Clean, fuel rich air enters the SIDE of the head, flowing past the intake valve stem, then down into the cylinder, boom, then up and back out the other side of the head past the exhaust valve, past the valve stem, then into the exhaust headers. They're hot by the way.
Go on, ask me how I know.
__________________
Be Just and Fear Not.
|