Head bolts how to tell if they are stretch or a grade 6-8
Posted: Sun May 25, 2008 10:37 pm
So I am new to rebuilding Cher-man BMWs and I have come to the point of putting my head back on the block after a nice overhaul. I went to go buy my gaskets and the gent at the store asked me if i had stretch bolts. My car is a 1987 325is US model, I live in Canada. On the top of the bolt it reads RIBE 12.9
I cleaned the bolts threads with a lathe and brush but i was wondering do i need to buy another set now?
picture of the bolts, if another full shot is need just say, sorry if there is already a thread about this i did not find one in a search and i am in pinch for time
I cleaned the bolts threads with a lathe and brush but i was wondering do i need to buy another set now?
picture of the bolts, if another full shot is need just say, sorry if there is already a thread about this i did not find one in a search and i am in pinch for time