First reaction is lifters but there's an invoice from the previous owner of "stage 3 lifters" installed 20-30k ago...
It still drives smooth though as soon as I noticed it Ive taken it home to minimise damage...
Hopefully it's not a fucked valve... It sound higher up in the head...
Edited by Rvr_HSG, 18 February 2018 - 12:27 AM.