I have several 13 fin cyls. the 74s arent relieved and one of the 80s is. I heard that some of the 80s got factory relief. If the 74s got bored out, you had to do it yourself. Honest
Thank you for replay. I have one set 13 fin 80s for my 37 ULH, they have reief. I don´t know factory or not. All my 11 fin zylinder don´t have relief but i belive 11 Fin zylinder are only 74s.
Once again do 80s have factory relief and 74s not?
Best regards Joe