the only thing that had not been rebuilt were bores and pistons, I bought a second hand 200 block which was supposed to be rebored and installed new pistons 15.000km ago so I let them

Oil pump is std with kent cams spring HP

I will make a last test today because I think I've a bad camshaft and cleaning all tuppets (but reading your comments probably has nothing to do) and if it continues doing the noise I will have to remove engine out of the car