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[oletrucks] T-stat, cooling system general info...

To: oletrucks@autox.team.net
Subject: [oletrucks] T-stat, cooling system general info...
From: bigfred@unm.edu
Date: Mon, 06 Oct 2003 14:26:27 -0600
Hi all, 
I'm trying to get some basic info regarding how my cooling system 
works, or should work.
I have a totally new system, including motor, heater core, water pump, 
hoses and radiator.
1- How does a T-stat work? I have a 180 degree T-stat. Does it *start* 
to open at 180, or is it fully open at 180?
2- I have a factory temp gauge in the front of the motor and an 
aftermarket temp gauge in the back of the motor. My back one always 
reads a few degrees hotter then my front one, which I would expect. 
However, I start to get worried when I see it creep up around or above 
210.  Given that the system is pressurized and the boiling point of H20 
is 212 at sea level, it seems like the system should be able to operate 
at well above 212. Is this correct?
3- What is the ideal fan set up?  I have a non-flex fan w/o a clutch. 
It is set all the way inside my shroud.  I have heard that it should 
sit 1/3 out and 2/3 inside the shroud. Is this correct? if so, why?
Should I run a clutch? Should I just ditch the engine driven fan and go 
with an electric fan?
4- What is the opinion on auxilliary pusher fans? Are they just a 
solution to a problem that is not being addressed?

I know I've asked a lot of questions, but I can't seem to find a 
general concesensus on these.
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959

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