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

[lbaird119 at aol.com]

I said it wasn't from overskimming since I've seen new heads where the valves are higher than the head surface (slightly) and your old head likely still has the valves recessed regardless that you've skimmed it down.
  From your description, it sounds like you have wrist pin slop.  Slow internet at the beach (none for the last couple days) so not going to try and listen here.
     Loren


-----Original Message-----
From: Mark Shepherd <mark at shepher.fsnet.co.uk>
To: vwdiesel <vwdiesel at vwfans.com>
Sent: Sat, Aug 31, 2013 11:51 am
Subject: [Vwdiesel] 5+ years of engine noise 1.6TD mech head


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



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