This is really an interesting question. My GT has a Buick 300, iron block,
ally heads, and I was worried about cooling from the onset of the
conversion.
My sender for the electric fan is indirectly from the block. As I had a
custom radiator made, I had 2 extra bungs installed for whatever. I used one
for a sender to power a second temp guage reading the temp at the radiator.
Comparing the two different readings has been interesting. During normal
driving, the engine temp is 195`(F), as determined by the engine thermostat,
and the radiator temp is as low as 140`. As soon as I get stuck in traffic,
the radiator temp will rise fairly quickly to 195-200` even though the
outside temp is as low as 34-40`. My electric fan is set to turn on when the
block hits 200`.
In summer, the engine temp will rise to about 210` before it starts to drop
as the cooler water from the radiator circulates. In cooler weather, the
engine temp rises to only 200-205`.
I am not saying use the radiator and set the fan at 200`. I am saying you
can use either the block or radiator to set the fan, but it is helpful to
know what is happening within your own system to make the right setting.
A note about my "indirect" block reading. I have a fan controller that reads
from the temperature gauge, eliminating some wiring, and making adjustments
possible while driving, from a knob just below the dash.
Jim Stuart
Reply to <jimbb88@comcast.net>
-----Original Message-----
From: owner-mgb-v8@Autox.Team.Net [mailto:owner-mgb-v8@Autox.Team.Net]On
Behalf Of Barrie Robinson
Sent: Tuesday, January 02, 2007 3:26 PM
To: Simon & Donna; mgb-v8@autox.team.net; mgs@autox.team.net
Subject: Re: Temp sensor position
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