Even with 10-15 in/Hg vac at the dipstick tube
(leaky tube to block...wiggle could jack it to 20 in/Hg.)
the rocker cover still 'puff's' about a lb. It will build up
almost 2.5lbs of pressure in the rocker cover
even though there is a vacuum in the crank.
hhhmm... so where is the rocker cover pressure coming from?
Paul Tegler
ptegler@gouldfo.com
www.teglerizer.com
----- Original Message -----
From: "Donald H Locker" <dhl@chelseamsl.com>
To: <spitfire-enthusiast@yahoogroups.com>
Sent: Tuesday, May 27, 2003 10:03 AM
Subject: Re: [spitfire-enthusiast] crankcase venting EVERY LBC! Tricks !
Vacuum - Long
> However, a simple pipe to the outside air may not be sufficient
> venting -- it takes pressure to make the gases flow and if there is a
> lot of blowby, it may take lots of pressure to get it out of the
> crankcase. (Try blowing through a straw.) A proper PCV system is
> highly recommended, as it reduces pollution, prevents engine damage
> from condensed blowby gases, and does NOT affect performance if
> porperly installed. Which is quite easy.
>
> Donald.
>
> > From: "Nolan" <pnolan@carr.org>
> > Date: Tue, 27 May 2003 08:53:43 -0400
> >
> > The crankcase can only build up pressure if it's unvented. Simply
> > venting the crankcase, such as through the valve cover tube that's
> > there for that purpose, prevents crankcase pressure. Just don't
> > plug that tube and there is no pressure
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