Thanks Sean, thats a good site. I need to check it out more thoroughly when I get a free second or two.
I did notice that the chain procedure posted on that site only replaces the top rail. I need to redo the chain tensioner "rail" and lower rails too: so the pan needs to come down to get the front timing chain cover off. Oh well..
'84 190E 2.3
'83 Porsche 944 (track car)
'84 Porsche 944 (parts car)
85.5 Porsche 944 (sled)