Thanks for the replys guys. Im 100% on the rod noise as it sounds likes it gonna come through the side of the block. Regarding the brown sanding discs, Ive never heard of these causing problems as long as u cleaned up afterwards and we do use these little 2" discs regularly. However, I will probably find something else to use then since I don't wanna take any chances. It is a very big possibility that he could have dropped something in the motor or left something in there like rags or something like that. It wouldnt surprise me it the intake isnt sealed very good as he seems inexperienced with this kind of procedure but its not a spark knock or detonation. Timing was a couple of teeth off which has been corrected. This guy is no longer working for me since he was caught using drugs in the bathroom which explained the numerous trips to the bathroom ha ha. I figure the motor is pretty much trashed so I dont think Im gonna tear it back down since time is money and since I have to provide a new motor anyways(about 1200).