Best place for thermo fan temp probe?

[Talkwrench]

I was thinking of just putting the temp probe for a thermo fan on the head , which would be under the thermostat wouldn't it, however is this the best place..What about the top of the radiator hose? Triggers on at approx 185 and off at 175.

[ford38v8]

At the base of the fuel pump stand, where heat soak is the real problem.

[ken ct]

What would he read there,air temp. I think he means water temp. lol ken ct.

[oldbugger]

I have mine about 6" down from top center of radiator, works for mine. Good luck

[41ford1]

Center of the rad works well for me. I have the thermo switch set at 160°F. The fan only comes on when in slow moving traffic.

[Ol' Ron]

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I believe an engine should run at a temp of 180 degs or better. I installed the pickup in the upper radiator hose, set at 200.

[TStiles]

Any opinions on the best brand of fan?

[19Fordy]

Use an infra red temp gun to find the hottest part of the radiator and place it there.
It will probably be near the top finned area of the radiator.

[dude]

Spaw is a great fan. I put my switch in the head ,under stat. put it at the hottest spot in system.

[ford38v8]

Originally Posted by ken ct

What would he read there,air temp. I think he means water temp. lol ken ct.

Yeah, what was I thinking?

[Mike in AZ]

anyone with electric fan on a '36??....brand??...12V system.....thanks....Mike

[Talkwrench]

I think most would say Spal is the best fan, however bit rich for me here in Oz.

Ok maybe we can look at this what is the flow direction?

[expavr]

Originally Posted by TStiles

Any opinions on the best brand of fan?

Flexalite. Model Black Magic Extreme. In traffic with the air on and high ambient temperature (90*+) it will hold 185* on my supercharged hemi with no problem. The Extreme model might be overkill for a flathead.