<VV> Overcooling (was: LM turbos and no lower shrouds)

Tue Oct 25 17:25:04 EDT 2011

Could be ... I really am not an expert engineer or mechanic -- just a 
good shade tree that finds it easier to stay out of trouble by not 
re-engineering my cars.  If I keep them well maintained in stock 
condition they last forever.  Have a 1980 Toyota I bought new and now 
has 250k miles, several 90s Ford trucks, etc.  All going strong.  As 
soon as I mess with them ... like the Ford, add a chip.  Now I need 
bigger exhaust, more intake.  And on and on.  On my Corvairs I have 
just observed that a stock car runs pretty good.  Don't need to go 
removing things to make it better.  But that is just an opinion.  But 
the gun is cool, even if it does not always work :-)  E

At 02:02 PM 10/25/2011, Ron wrote:
>An IR gun can give erroneous readings by reading the air temp 
>between the gun and the object you're aiming at.  Hot air emits IR waves.
>RonH
>
>----- Original Message ----- From: "Eric S. Eberhard" <flash at vicsmba.com>
>To: <virtualvairs at corvair.org>
>Sent: Tuesday, October 25, 2011 1:05 PM
>Subject: <VV> Overcooling (was: LM turbos and no lower shrouds)
>
>
>>I use stock instruments which are not as accurate as one would like,
>>or consistent between cars.  Change the thermister on a Spyder ...
>>and it'll run 50 degrees hotter or cooler.  So I generally go for "is
>>this car acting normal."  Having said that, I have often used a
>>really cool instrument that is fairly exact -- it is like a pistol
>>and you aim it at things and it gives you the temps.  The oil filter
>>is much different than the oil pan.  Enough so that my A/C car which
>>was really off, I installed an aluminum pan (better).  The person who
>>taught me that trick (and owns the gauge) is an old Corvair mechanic
>>in the Verde Valley.  After rebuilding my sedan he used that all over
>>the place until he was happy.  To some degree consistency was more
>>important than the actual numbers.  And, of course, there probably is
>>a difference between oil temps at the idiot light versus the pan and
>>oil filter (those two are wildly different at times), on the cooler, etc. E
>>
>>At 11:36 AM 10/25/2011, you wrote:
>>>Message: 2
>>>Date: Tue, 25 Oct 2011 14:33:02 -0400 (EDT)
>>>From: jvhroberts at aol.com
>>>Subject: Re: <VV> Overcooling (was: LM turbos and no lower shrouds)
>>>To: Vairtec at optonline.net, virtualvairs at corvair.org
>>>Message-ID: <8CE615BA9C5F774-5F0-58B92 at webmail-m098.sysops.aol.com>
>>>Content-Type: text/plain; charset="us-ascii"
>>>
>>>
>>>  Define operating temperature, and how did you measure it?
>>>
>>>This is where I get the most grief, trying to get accurate data!
>>>When I was debugging the cooling on my Mazda 13B powered boat, I got
>>>all kinds of 'advise' from others who tried, like, they couldn't get
>>>an oil cooler that worked very well, etc.. Adding a decent
>>>instrument helps a lot. I bought a Fluke two channel digital
>>>thermometer and a pair of Type K thermocouples, and that answered a
>>>LOT of questions. Meaning, often, factory gages aren't worth SQUAT!
>>>Turned out my oil cooler setup worked fine, and a couple of guys who
>>>duplicated said it never worked right AT ALL, until I lent them this
>>>thing, and gee, it's amazing what you learn when you measure stuff 
>>>accurately!
>>>
>>>So, I ask, how do you know it was overcooled?
>>>
>>>
>>>
>>>John Roberts
>>
>>
>>Eric S. Eberhard
>>(928) 567-3727          Voice
>>(928) 567-6122          Fax
>>(928) 301-7537                           Cell
>>
>>Vertical Integrated Computer Systems, LLC
>>Metropolis Support, LLC
>>
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Eric S. Eberhard
(928) 567-3727          Voice
(928) 567-6122          Fax
(928) 301-7537                           Cell

Vertical Integrated Computer Systems, LLC
Metropolis Support, LLC

For Metropolis support and VICS MBA Support!!!!    http://www.vicsmba.com

For pictures:  http://www.vicsmba.com/ourpics/index.html

(You can see why we love this state :-) )  