You're living in Europe and don't know where to find Volvo parts!!! I wish I had those problems. Buy a copy of the German classic car magazine MARKT. Look in the classified advertising section under "Volvo". There are at least 6 very good and knowledgeble sources, almost all with websites. I agree about the timing gear analysis. Been there. It seems to be true that the loudest and most scariest noises turn out to be the less complicated fixes. It's the small and hard to hear noises that will bite you in the bumper.

I have in my parts bin an ALUMINUM (Aluminium, for you Brits)timing gear. Appears to be used, but unmarked. Anyone have any experience with one. Should I try it out, or leave it in the bin? Also, there are some Japanese timing gears in circulation, are they a good alternative to OEM?