ok, so now the motor is pretty much disassembled, and heres what I found.
First, after removing the tin over cylinders 3 and 4 I found a nice spark plug socket, right between the jugs blocking any airflow lol.
Second: my oil cooler vents were clogged like crazy with some of that extremely brittle insulation stuff...not sure where it came from.


third Remember the cylinder that basically had no ompression? Well, THAT was the source of why my motor was so loud all right! it appears some time ago (possibly with previous owner or the one before) someone might have dropped a nut or something down the intake, and never went after it... have you ever wanted to know what it does when something hard like that starts banging around in your cylinder? well, apparently it keeps digging and digging till it finally finds a way out. and on mine all the damage was dont to the head itself as you can see here between the valves and along the sealing edge where the cylinder meets the head.

Well there you have it!