<VV> Cooling the Corvair Engine

[James Davis]

The Ultra Van will maintain a 30 degree differential just by using 
engine heat with headers cruising at 60 mph.  There is also a 15,000 
btu propane heater if the ambient is colder than 40 degrees 
F.  Remember the engine has full lower shrouds. Low oil temperature 
is never a problem on an Ultra Van.  Even with an ambient of 15 
degrees F, the oil temper will run 230/240 without an external oil 
cooler.  The UV frontal area is twice that of a car and the Cd is 
0.77 or so the engine needs to produce over three times the power 
output of a car,under comparable conditions.   You can hear the 
engine with the heat on but it is not objectionable as the heat duct 
is 16 feet behind the driver.. With the heat off, I cannot hear the 
engine; that is why most traveling UV owners have a Safeguard.
Jim Davis  .




At 09:23 PM 8/4/2007, J R Read_HML wrote:
>YEP,  Running headers will help drop the CH temps considerably.  If 
>you never need to run the heater, that is a way to go.  On cool 
>nights, check the oil filler tube for white "mayonnaise" buildup - 
>indicating you are running too cool.  There is also the "ringing 
>ear" problem to consider on distance driving.
>
>Later, JR
>CCE and CORSA member
>'61 Rampside Standard 4/110
>'65 Monza Convertible 4/140 (headers replaced with stock system)
>'66 beater 500 Coupe "icemobile" 4/140 (50%)
>
>
>
>----- Original Message ----- From: "Dennis & Debbie PLEAU" <ddpleau at msn.com>
>To: <virtualvairs at corvair.org>
>Sent: Saturday, August 04, 2007 3:54 PM
>Subject: Re: <VV> Cooling the Corvair Engine
>
>
>>Wow some real instrumented data!!!  Jim lowered his temps under the 
>>same conditions by around 200 degrees using the same meter.  Other 
>>than reversing the logs reversing the logs, everything he did is 
>>applicable to a car or van.
>>
>>Dennis