Getting ready to build a new set of headers, so removed the old ones today. Exhaust ports are a little curious-looking, the front port on both sides of the motor are quite dark, and the other 3 are a very light whitish-gray (see pics). Maybe an anomoly of throttle-stop racing? (My Dedenbear throttle stop has the secondary blades almost completely closed when on the stop). Both pictures are of the right side of the motor, the left side is identical. Any thoughts, opinions, or similar experiences?

7916189-Exhports1.JPG (113 downloads)