so i fitted my new head yesterday only for it to make a horrible crunching noise intermitently took the head of and the metal seat that sits on top of the valve and lifter has come of now the bolt that holds this on has half sheared in the head but half is still there the cam is also clicking when u turn the engine by hand it will turn smooth then click a few times then fine again.i need to know have i done damage?
at the moment im gonna tap the bolt hole and refit but i dnt wanna start the car if its gonna damage things