Re: IML: thermostats

[PAUL WENTINK <randalpark@xxxxxxx>]

I don't understand how the lower temperature thermostat is going to 
cool down a hot engine. Once its hot, the only way to cool it down is 
to turn it off and wait. Sitting in traffic with it running will only 
make it hotter since there is less air and water circulation under stop 
and go conditions.

I do agree that an auxiliary fan will help since it would run at a 
constant speed or one related to the need for cooling without respect 
to the actual engine RPM.

Paul W.


-----Original Message-----
From: Klebert L. Hall <crocuta@xxxxxxxxxxx>
To: mailing-list@xxxxxxxxxxxxxxxx
Sent: Thu, 25 Oct 2007 3:17 am
Subject: Re: IML: thermostats


I have found that lower temperature thermostats are an enormous aid to 
a standard problem of big-block engines in hot weather - heat soak. If 
you're driving in mixed highway/city conditions with a high thermal 
load on the engine, when you get off the highway and immediately get 
stuck in gridlock, engine temperature skyrockets - on the highway, the 
thermostat was closed because of high engine-compartment air exchange, 
which is now no longer happening. In this circumstance, opening the 
thermostat wider, sooner, keeps peak temps down. 
 
  Another thing which helps for this is an auxiliary electric fan. 
 
  -Kle. 
  '69 Crown 4DHT (temporarily moribund) 
 
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