You can see from the slight inner exhaust port surface rusted area, these ports have never been modified. This uniformity of rust penetration is "Patina" which is a direct indicator of the non disturbed Cast Iron Ports in the cylinder head
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Title: Virgin Exhaust
Description: You can see from the slight inner exhaust port surface rusted area, these ports have never been modified. This uniformity of rust penetration is "Patina" which is a direct indicator of the non disturbed Cast Iron Ports in the cylinder head
