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Re: Oil from the vent

To: andycost@earthlink.net, Datsun-roadsters@Autox.Team.Net
Subject: Re: Oil from the vent
From: Keith0alan@aol.com
Date: Thu, 25 Nov 2004 10:31:43 EST
The Cosworth Vega had a check valve on each exhausr manifold runner with a 
line to the valve cover or air cleaner(I forget which) rather than an air pump. 

kw

In a message dated 11/24/2004 2:41:46 PM Pacific Standard Time, 
andycost@earthlink.net writes:

> I've always wanted to do the negative crankcase pressure trick ala NASCAR.  
> They sell a kit at www.summitracing.com
> It has a tube with a valve at either end.  One end welds onto the exhaust 
> manifold and the other onto the valve cover.  Drawing a vacuum on the 
>crankcase 
> increases piston ring seal and raises the compression in the combustion 
> chamber.  It also reduces oil foaming in the sump which decreases windage 
> associated drag.






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