sooo i just installed a biger turbo on my sr soo i figured it would be wise to do a new headgasket and arp studs.. i took the head to a local shop to get cleaned and the valve seals replaced... reinstalled everything got the motor back in the car had a few start up issues but narrowed it all down to a bad z32 maf... after that it started and ran perfect... i let the car run and go through a heat cycle like warm up and cool down... just to make sure everything settles good.. i took it around the block just to see if it drove smooth and ran good... it did and i made sure i did not get on it at allllllllllllllll....... and i didnt.. there was a weird clicking noise coming from my tranny when i would be in gear and driving but when i came to a stop it went away... i drove back home and parked and let it cool down.. my friend came over and wanted to see it run so i started it up for him and we where sitting there looking at it super pumped on it being done finally and just out of nowhere my motor started rattling making a werid knocking noise... i have broken down the head and tryed bleeding the lifters and checked for anything wrong in the head nothing and i put it back together and it still makes a knocking noise... it sounds like its coming from the head where it says 16valve on the cover... i use a screw driver and probed the head all around and heard it buzzing and then when i got to that spasific spot i heard the noise... i know this video isint the best sound quality but what are your suggestions.. do you think i spun a berring? or do you think i just have a bad lifter or bent valve? it could be anything really im just trying to save some time soo your input would be awesome thanks!!!

http://www.youtube.com/user/Chask941.../0/5Y5dr7Czq7M