Thermal fan Controller

[philby]

I want to replace the belt driven fan and fit a couple of thermal fans.

Does anyone know a good brand thermal fan controller with adjustable temperature and a thermistor that can be tapped into the radiator hose?

[ChiefRocka]

I used that Denale or Flexalite brand, that uses a flexible anode that slips into the top hose and is actually submerged in the hot coolant, work great and is fully adjustable.

Forget about the type that is pushed the radiator fins..those suck big time.

[lyrikz]

Originally Posted by ChiefRocka

I used that Denale or Flexalite brand, that uses a flexible anode that slips into the top hose and is actually submerged in the hot coolant, work great and is fully adjustable.

Forget about the type that is pushed the radiator fins..those suck big time.

im JUST getting ready to purchase this..... You have a link to what your talking about....

[rickf]

Looks like a typo in the Chief's post. I'm pretty sure he meant Derale (not Denale), as in this one:

http://www.derale.com/thermo-switch-wiring.html

[ChiefRocka]

Not a typo, just couldn't remeber the name !!

[coolair]

Vintage Air sells an adjustable thermostat that screws into the drain of the radiator - using one on my 65 and it works great.

[lyrikz]

Originally Posted by coolair

Vintage Air sells an adjustable thermostat that screws into the drain of the radiator - using one on my 65 and it works great.

Dont you want the temp sensor in the upper portion of the radiator system???

[lyrikz]

Originally Posted by ChiefRocka

Not a typo, just couldn't remeber the name !!

Hey chief,
is this what im needing?
http://store.summitracing.com/partde...5&autoview=sku

I like that better then the probe..

[rickf]

Originally Posted by lyrikz

Dont you want the temp sensor in the upper portion of the radiator system???

This was discussed pretty thoroughly awhile back. I agree with those that would answer "no" to that question. What you want to know is if the radiator is cooling the water enough, and if it is not then you want to turn on the fan. Therefore the "best" place to check water temp for the controller is near the water output. And I think the result of "best" in this case is this is where you will get the most stable control.

That said, it really will work well enough for practical purposes in almost any location. The heat rise as water goes through the engine is fairly predictable, as is the relative temps at various locations. It is just that some are hotter than others, so one uses a different setting to get the same overall result.

But if you put the sensor in front of the thermostat, then you could get temp spikes that will turn on the fan even though overall the system is not hot. That's what I mean by not as stable of control.

[lyrikz]

Well, what im going for is a sensor that actually touches the fluid. You dont see car manufacturers use probes that stick through the radiator. SO, i went out and bought a little do it yourself kit.. $30 bucks and it will auto turn on the fans at 190 and it has an actual thermo switch that goes in the coolant system.....

I will take pics and post part numbers.. im sure this has been done, i just figured what the heck...

Comes with a 30 amp relay, atc fuse holder, temp switch... Cool stuff....