Darrell, In my opinion at idle you risk having temperatures in the head reach
unacceptable numbers before your fan is activated, even with the lower
settings as you've indicated. I find that my car runs best at 180 to 190 water
temperature. I am able to maintain that temperature even at idle if the fan
turns on soon enough. If allowed to get too hot it takes an inordinate amount
of time to cool. My engine is warmed up a bit with larger pistons, a milled
head and cam so I am generating more heat too.
What does your temperature gauge read at the time when the fan is activated?
JVV
----- Original Message -----
From: Darrell Walker
To: tr list
Sent: Saturday, April 05, 2003 9:47 AM
Subject: Re: Electric Fan Control
On Saturday, April 5, 2003, at 04:32 AM, Gerald Van Vlack wrote:
> Incidentally, I would strongly
> recommend against monitoring the temperature via any kind of device in
> the
> lower hose or pipe between lower hoses unless your setting is much
> lower than
> your desired running temperature. Reason; the hottest water is coming
> off the
> head and needs to be monitored there in order to keep the engine
> running in an
> acceptable temperature range. It is after all where the temperature
> gauge is
> sensing the engine temperature.
>
I chose to mount the switch at the bottom, my reasoning was that it
only comes on if the water isn't getting cooled after it passes through
the radiator. But my switch comes on at a much lower temperature (on
at 180, off at 170 or 165, I think).
--
Darrell Walker
66 TR4A IRS CTC67956L
Vancouver, WA, USA
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