speedtigger

iTrader: (16)

I am trying to pick a fan controller for my electric fan (planning to use a Taurus fan).
I don't know much about these brands and their quality. Would you chose this one:
http://www.summitracing.com/parts/FLX-33054KIB/
Or this one:
http://www.summitracing.com/parts/DER-16789/

Pop N Wood

iTrader: (1)

Those are pretty pricey. I used an adjustable radiator probe unit that cost around $35. Have been using it with my Taurus fan with zero problems. I wanted to get one that used a sender in the heads, but as you may have noticed not many people make one with the right sized threads. Putting a bit of plumbers dope around the probe in the fins seems to help make the turn on and off more consistent.

I don't remember the exact brand but this one looks like the one I have

http://www.summitracing.com/parts/DER-16759/

lordrazo

iTrader: (18)

ya save the buck and go with the one above me der-16759 ^^^^^

speedtigger

iTrader: (16)

Ah, good to know about the thread problem. I wasn't aware of that issue. I would definitely prefer a sender that screws into the head. So, if anyone has found a solution for this problem, please chime in.

I was going to choose the more expensive unit because it has high and low speed fan settings as well as an input for air conditioning signal. It seemed like an elegant solution.

bczee

iTrader: (12)

I am using the SPAL FAN-PWM controller..the older version. The new versions FAN-PWM-V3 is $164 retail but about the same as the others as discounted street prices go.

I was able to tap into the OEM sensor in the Driver side head for input to the controller. I am running duel SPAL fans to match.

speedtigger

iTrader: (16)

That is excellent that it uses the factory sensor. I like the soft-on too. But, it says on the site that it does not work with the Tuarus fans How has it been performing?

John McGraw

I just use the OEM sensor and the output in the ECM. If you are using a ECM, I can't imagine why you would want to add the additional cost and complexity of a stand-alone fan controller. All you need to do is add a relay, and you are good to go. The turn-on setpoint can be set to any value you want, and you even have the option of dual, independent fan control, if you desire.

JMHO

Regards, John McGraw

speedtigger

iTrader: (16)

I am carbureted. My set up does not have an ECM.

Pop N Wood

iTrader: (1)

I forgot to mention that I only have the low speed fan connected. I wired it up with the idea that I would put a high temp (>210°) switch in the head to switch it to high speed while using the adjustable controller on the low speed, however I couldn't find a switch with the right threads. Turns out I have never needed more than the low speed fan so never did the mod. I sued the relays I got with the Taurus fan so all I need to do is hook a ground to the high speed relay.

There is a member on here who turns down 3/8 NPT sensors to M12x1.5. It is also possible to drill and tap the head to 3/8 NPT. A final option is splicing a NPT fitting into the radiator hose or even the brass block heater plug on the side of the block.

Painless makes a fan controller with an M12x1.5 threaded sensor for LS heads. I think the sensor was a non adjustable switch. They don't sell the sensor separately.

rotor vs. piston

iTrader: (3)

I used this one http://www.summitracing.com/parts/DER-16749/

Though the 3/8 sensor is in a coolant pipe I had to make for my swap... so it was pretty easy to just weld a 3/8th bung in the pipe.