[T3] cylinder head breather ports on a 1972 Squareback

Dave Hall dave at hallvw.clara.co.uk
Sun Aug 4 10:19:54 PDT 2013


My '72 FI has the heads without breathers but it has the two caps on the
breather box.  We didn't get the recirculation valve though in the UK, so it
may depend on what he's allowed to leave off as far as the desmogging law
permits.

Dave
UK VW Type 3&4 Club
===================

-----Original Message-----
From: type3-vwtype3.org-bounces at lists.vwtype3.org
[mailto:type3-vwtype3.org-bounces at lists.vwtype3.org] On Behalf Of
Bobsnotch at aol.com
Sent: 04 August 2013 17:18
To: type3 at vwtype3.org
Subject: Re: [T3] cylinder head breather ports on a 1972 Squareback

In a message dated 8/3/2013 10:04:48 P.M. Eastern Daylight Time,
jadney at vwtype3.org writes:
 
The situation you describe occurs when you don't have the breather ports in
the heads AND you don't have the IAD suction applied to the breather. In
this situation, you will get pressure buildup in the case  from accumulated
blowby. A pressurized case will cause oil to get blown  out of the unsealed
rear crank hole.

I'm assuming that he has the  intake portion of his '72 system intact. 
If I'm wrong about that, then  this changes everything.
 
Or, IF he used the earlier style breather box with the single plastic plug.


Bob 65  Notch S w/Sunroof and IRS aka Krusty
64 T-34 Ghia aka Wolfie
71  Square-vert under  construction


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