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

 

dont sound to good!!!!!u did put the shims under the rockers didnt u?

 

Had this on 2 of my rockers on my cvh head..whole tread out of the head .
Overtightend them i guess.... put helicoils in them and running fine again.
Would search what is wrong with yours though but you could have overtightend them??

 

lol yeah I had this and I hadnt put the shims/spacers in!
£11 a pop for a helicoil to be fitted at my local engineers, all good after that!

 

think i might just swop the heads over and pull the cam out the new one
i was trying to tighten it up last night as the bolt went back in and was solid until i tried turning it by hand and i could not move the cam at all the whole thing was seized solid it would go backwards but not forwards and im seriously annoyed as its just cost me £200 aswell i think i might just strip that head of and put an old one on grrrrrrrrrrrrrrrrrr

 

the cam is also clicking when i try to turn it over any ideas?wud 2 rocker arms of make it do this?