Fwd: <VV> Corsa update II

[HallGrenn at aol.com]

In a message dated 6/25/2006 4:01:21 AM Eastern Standard Time, 
corvair at corvair.nl writes:

> My engine is missing the rear sheet metal that runs along the  
> harmonic balancer

Gus.  I would say this is a BIG part of the problem--especially at speed.  
You want all of the cooling air to be coming in from the louvers behind the rear 
window.  Sucking in the VERY hot air at the rear of the engine is a big deal 
at speed and under load.  You have both the Kamm effect making the hot air 
follow the rear of the car (remember how our oil leaks coat the rear cove?) and 
the low pressure in the engine compartment created by the cooling fan that 
sucks air in the easiest way.  By removing the lower shrouds you've reduced the 
restriction allowing more air to flow at a given horsepower, but you are still 
sucking in and recycling that very hot air that has already cooled the engine.  
The GM engineers knew what they were doing.  With the engine compartment 
fully sealed you will be able to put the lower shrouds back on.  If you need these 
pieces most of us have them.  Is the customs duty less if the parts are 
covered in three decades of oil and grit....................?  Chuck Hartzel is 
right as usual.

Bob Hall
Group Corvair
'64 'Brier
'65 Corsa
2 '68 Monzas