[Fot] Valve cover breather

Peter Vucinic pvucinic at netspace.net.au
Sun Dec 30 20:35:58 MST 2007


The Venturi system I have generates about 1.5PSI of negative at best. If you
are looking for more than this, you should consider using a smog pump or
similar. The venture is a 'cost you nothing' in horse power terms to run. I
don't see a down side to using something you already have available to you.
However, it has its limitation like any system.

Peter V
TR-4



 

-----Original Message-----
From: fot-bounces+pvucinic=netspace.net.au at autox.team.net
[mailto:fot-bounces+pvucinic=netspace.net.au at autox.team.net] On Behalf Of
William G Rosenbach
Sent: Monday, 31 December 2007 8:06 AM
To: william.tobin3 at verizon.net
Cc: FOT at autox.team.net
Subject: Re: [Fot] Valve cover breather

>>>"08 SCCA GCR; Section 9.3.37
states that it is prohibited to allow the breather to go directly to the
exhaust.

That sounds like the SCCA going 'green' on us. 
Can not go 'directly', so you could evacuate a fluid separating chamber
that is in line with the crank case vent line. 
I've always wondered if the exhaust Venturi could move enough air to
actually create a negative pressure in the crank case. If it was more
than up to it, excess vacuum capacity could be applied to the
transmission and rear end. Imagine, an English car that never got called
in for leaking fluids! Except for fuel from the fuel cell. 
Bill R
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