[FC] PCV/vent tube/balance tube

[Clark Hartzel]

The crankcase venting goes into the air cleaner.  I believe the balance tube
still has the small orifice to prevent your concern.
Clark Hartzel

-----Original Message-----
From: corvanatics-admin@corvair.org
[mailto:corvanatics-admin@corvair.org]On Behalf Of Bruce Gwyther
Sent: Wednesday, February 02, 2005 2:53 PM
To: corvanatics@corvair.org
Subject: [FC] PCV/vent tube/balance tube


I'm confused!!  Some 'Vairs use road draft tubes ('60,'61), some use PCV
valves ( I believe '62,'63), some use metered orfice balance tubes (I
believe
'64 and later). All FC's I've seen have PCV valves. The Original PCV valve
is
a cv584c according to the parts book. My problem is that if installed the
way
indicated (small end towards balance tube-large end towards crankcase vent
tube), it would introduce large amounts of air into the vacuum system. Air
from the crankcase or air cleaner would pass through the valve straight to
the
balance tube and into the vacuum ports on the heads. With no metering, as
with
the metered orfice tubes, the large amounts of air would cause a lean
condition. Can someone straighten me out on this problem (at least a problem
for me)??

            Bruce Gwyther - - -  vairman@sisna.com
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