Noticed these marks when taking my head off the ek9. Just curious if anyone had any idea what they are?
There doesnt seem to be anything that would cause them?!lol
Yep that's pretty much it, they just roughly gouge out the rough edges for clearance before machining the area where the valve spring sits and for machining the hole for the valve guidesYep, every head is like that, I think it's when the factory was tidying up the rough cast