[Vwdiesel] 5+ years of engine noise 1.6TD mech head

[Mark Shepherd]

Hi chaps,
In an effort to cure my engine noise, I have decided to share a video of the sound of my engine!

http://s1329.photobucket.com/user/Quantum-man/media/IMGP2505_zps4a50dfac.mp4.html

As some may be aware this engine suffered from an overzealous head skim, and has always knocked since. Various experts have suggested big ends, little 
ends, injectors and tappets Turned out to be valve clash...[No discernible wear to shell bearings back in 2009]
No problem, because I stupidly broke the cam and cam belt with a finger tight tensioner, this summer. :o( 

Great, a genuine VW CX complete and unskimmed head was found and installed.

That should have cured my noise issue, however it hasn't. Just maybe I do have a bearing issue now due to the thump of the pistons hitting the valves on the 
old head and hammering the cam lobes enough to break the cam in 2 places.
Currently the knocking still happens like previously when decelerating with engine switched off but in gear, but now there does seem to be a change in sound 
when applying loading.The sound track clearly shows problem confined to one cylinder only and only on compression stroke. Previously the sound track had 
shown a secondary noise from another cylinder. I will see if I can confirm this from an old recording if I can find it. 
Most of the young mechanics I come across don't have experience with the expected noise levels of this type of engine...
Cheers,
Mark