I am doing a vintage dirt bike project with my son. I have no intention of making it into a museum piece, but I would like to keep things as original as possible. Does anyone know what the black finish on 1970's era dirt bike engines is? Epoxy, Enamel, Powdercote, Anodizing are all possibilities. Not sure how each works with the heat on the air cooled cylendar head. Anyone with knowledge of oem finish or who knows what is the accepted modern solution is please offer advice.
Thanks
Fitz