ok i turboed my d16y8 and did not retard the timing or tune at all the 4th rod bearing got smashed it didn't spin so stupidly i tried to put a set of new std. bearings in it 5 minutes after i started it up the rod knock started up again. so i'm pretty sure my crankshaft is messed up and maybe the part were the bearing goes on mayb warped also is my crankshaft out of Balance also? will a micropolish be good enough to get rid of the knocking. How much do they cost and if it is not good enough were do i get another d16y8 crankshaft.