[no subject]

For 72-3 the vapors were pulled directly into the intake manifold. Extra 
breather ports were added to the rocker boxes on top of the heads where 
additional air, cleaned by the air cleaner, could be pulled INTO the case where 
they would scavenge vapors on the way to the breather box and the intake 
manifold. These engines are easily identified by the fact that they have 2 
plastic caps on top of the breather box.

The latest system is the only one which could accurately be called a positive 
crankcase ventilation system.

-- 
Jim Adney
jadney@vwtype3.org
Madison, WI 53711-3054
USA

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~