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**'68OrangeSunshine** · 06-29-2023, 05:00 PM

I have a mech temp gauge on both my trucks, a 292 L6 and a 350 V8. In both cases the probe is mounted directly in the head.
While teflon tape might make extraction of the probe easier, I think isolating it from direct contact with the metal of the head could result in a lower, innaccurate reading. While there's no electric current to worry about, if it were electric, that would also block continuity.
I'm also not sure of your T configuration. Would there be any temperature difference between indications at the water pump, as opposed to the head? IDK. But the head is the preferred source.
All of this is my own, unprofessional opinion.
But maybe this discussion will be interesting to an ''expert.''

06-29-2023, 05:00 PM	#2
'68OrangeSunshine Senior Member Join Date: Feb 2002 Location: Tucson, AZ USA Posts: 7,622	Re: Mechanical Temperature Sensor? I have a mech temp gauge on both my trucks, a 292 L6 and a 350 V8. In both cases the probe is mounted directly in the head. While teflon tape might make extraction of the probe easier, I think isolating it from direct contact with the metal of the head could result in a lower, innaccurate reading. While there's no electric current to worry about, if it were electric, that would also block continuity. I'm also not sure of your T configuration. Would there be any temperature difference between indications at the water pump, as opposed to the head? IDK. But the head is the preferred source. All of this is my own, unprofessional opinion. But maybe this discussion will be interesting to an ''expert.'' __________________ Every 25 years I like to rebuild that 292, whether it needs it or not.