I took it to another mechanic and he wants to make sure the head is not cracked so he asked me to take the head off so he could take a look at it. He's older so he doesn't do does types of jobs anymore but he said he would help me if i did all the heavy lifting work. He did a compression test and the numbers were 160, 150, 160, 160 for cylinders 1, 2, 3, 4 in their respective order. That number 2 cylinder has the lowest compression and is the one that is making the weird noise.

With the head and oil pan off how can i check if it's the wrist pin or the bearing? And can i really just change all the bearings? This is the last effort into getting this thing running if it doesn't get fixed ill try to sell it for parts or just junk it and move on. Thanks for all the help.