5 cyl interference

[JanDebL at aol.com]

I saw all the responses from the other listers.  I concur the 10V turbo is an 
interference engine - I have repaired one where the valve contacted the 
pistons by cranking the engine with the starter.
As a kid growing up with small block chevy V8s which had valve reliefs 
machined into the pistons,  I could never understand the reason the German's 
would not use them also.  The small difference in ultimate engine performance 
could not possibly be offset by the very real probability of piston valve 
contact.  I know there are people who will argue this point but my response 
is - if someone wants to consider themselves a "world class engineer" they 
should design a camshaft drive that doesn't fail instead of the current belt 
design that looks like it was stolen from a sewing machine.  I take care of 
my vehicles and change the belt more often than recommended but I can't count 
how many disappointed VW, Audi and Porsche owners I have talked to who 
experience this problem - all which could have been easily prevented.
My .02 DM
Jan Lahtonen  
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