[Vwdiesel] PCV vents

[Libbybapa at wmconnect.com]

In a message dated 5/23/06 11:36:36 PM US Mountain Standard Time, 
LBaird119 at aol.com writes:


> IIRC that has nothing to do with oil separation.  It's an anti overpressure 
> device similar to what Ford pickups have (at least the older diesel ones.)
> I can't remember exactly how it works but something to do with more 
> pressure in the intake than the crankcase or vise versa.
> 

I don't quite get that for a couple of reasons.  The intake (pre-turbo where 
the vent enters) will always be less pressure than the crankcase any time the 
engine is running.  I can't see any reason to add a valve that let's crankcase 
pressure build higher than it would otherwise???  Why would VW add a 
complicated plastic part that didn't really accomplish anything.  From personal 
experience it does a very good job taking oil out of the crank vent.  Has anyone 
here ever had a runaway on their TD with the puck properly installed in the valve 
cover?  Anyone had a runaway without the puck?

There are commercial oil seperators available on ebay.  One could also be 
made fairly easily.  I considered it in the past, but didn't have cause to 
actually complete the project.

Andrew