[Healeys] PVC value question

[warthodson at aol.com]

In my opinion either location will provide positive crankcase ventilation. My
related question is what purpose does adding the valve into the PVC serve?
Gary Hodson


-----Original Message-----
From: john spaur <jmsdarch at sbcglobal.net>
To: healeys <healeys at autox.team.net>
Sent: Sat, Dec 15, 2012 6:17 pm
Subject: [Healeys] PVC value question


An article on John Sim's website shows the installation of a PVC
valve. However, the vacuum source is from the intake manifold on the
front carburetor for a tri-carb.

Why can't the vacuum source come from the rear carb air filter where
the existing crankcase ventilation hose connects?

Thank you,

John Spaur
'62 BT7
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