<VV> 90 degree cooling fans

[Mark Durham]

Guys, the whole idea of sucking versus blowing to cool something; both
methods do the same thing.
You can pressurize the air on top of the cylinders which provides a
pressure differential so the air flows in sufficient volume past all the
hot parts and cools them. the pressure helps the air to more heavily
contact the metal for better cooling.
Or you can provide a suction on the underside to do the same thing, suck
air past the hot parts to cool them. However, the pressure on top actually
provides better cooling because the higher pressure in the box helps push
the air thru areas where a suction method would not cool. Air does cool as
it speeds up and moves thru a restricted space like a venturi however
designing a cooling system around that principle would be difficult. Plus
GM built the tin to keep the engine at about 250 degrees warmed up, which
is a great operating temperature for an engine to be at. The best thing to
do is to have good tin and a sealed engine and it will run for years. Mark
Durham

Sent from my Windows Phone
------------------------------
From: ScottyGrover at aol.com
Sent: 7/15/2012 11:35
To: virtualvairs at corvair.org
Subject: Re: <VV> 90 degree cooling fans