Help with temperature sender for electric fans

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Mar 16, 2012 | 05:39 PM

smilasm

Thread Starter

Instructor

Joined: Oct 2008

Posts: 163

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From: Kaunas LITHUANIA

Help with temperature sender for electric fans

Hi Brothers,
I want to go with 2x12" electric fans on my 75 350 with A/C and aluminum radiator,and don't know witch temperature sender have to use, 185on/170of, or 200on/185of. The sender will be in a thermostat housing?
Thanks in Advance

Mar 16, 2012 | 05:50 PM

Shark Racer

Race Director

Joined: Jan 2000

Posts: 12,399

Likes: 247

From: San Jose CA

Question #1, what thermostat are you running?

I'd probably do 200on/185 off with a 180 or 195 t-stat.

Mar 16, 2012 | 06:29 PM

smilasm

Thread Starter

Instructor

Joined: Oct 2008

Posts: 163

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From: Kaunas LITHUANIA

Good question about thermostat,not remember. I will have to open and look probably.Thank you for your help.

Mar 16, 2012 | 06:49 PM

Marlin

Drifting

Joined: Aug 2005

Posts: 1,372

Likes: 4

From: Springfield VA

I would go for the 200 one. Also the Head is a better place for the switch. Warms up faster/hoter there.

I got a fan switch for a 4cyl Mustang that open in the low 200 range for mine.

Mar 16, 2012 | 06:53 PM

smilasm

Thread Starter

Instructor

Joined: Oct 2008

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From: Kaunas LITHUANIA

Don't know the place in the head for the sender,will try to find

Thanks

Mar 16, 2012 | 08:57 PM

Tim H

Safety Car

Joined: Oct 2000

Posts: 3,593

Likes: 103

From: Southern Indiana

Quote:

Originally Posted by smilasm

Don't know the place in the head for the sender,will try to find

Thanks

There is only 1 and that is probably the home of your temp gauge.
I have mine in an extra hole in the front runner of the intake.

Mar 16, 2012 | 09:34 PM

Ben Lurkin

Le Mans Master

Joined: Dec 2006

Posts: 5,557

Likes: 9

From: Oquirrh Mountains

St. Jude Donor '09

Quote:

Originally Posted by Tim H

There is only 1 and that is probably the home of your temp gauge.
I have mine in an extra hole in the front runner of the intake.

Fortunately, there's one sensor plug in each head. Install the sensor in the other head.

Mar 16, 2012 | 11:20 PM

Tim H

Safety Car

Joined: Oct 2000

Posts: 3,593

Likes: 103

From: Southern Indiana

Quote:

Originally Posted by Ben Lurkin

Fortunately, there's one sensor plug in each head. Install the sensor in the other head.

I didn't mention that because he will have to run about 3 ft more wire.

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Mar 17, 2012 | 05:31 AM

smilasm

Thread Starter

Instructor

Joined: Oct 2008

Posts: 163

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From: Kaunas LITHUANIA

Wire is not a problem. Thank you all for the help

Mar 17, 2012 | 06:36 AM

#10

MalibuVLX

Racer

Joined: Dec 2009

Posts: 415

Likes: 10

From: Richmond Va

I run the 200/185off version from Speedway motors in my rockcrawling jeep w/ a roller SBC. I have had 2 others from Summit and they lasted about a year or so. On another note, you may want to also run an over-ride switch. That way if you start to run hot and not sure if your fan is turning on, you can flip the switch. All I did was run an addtl ground out of my relay to the switch inside the cabin. I have had to use it on occasion and was definitely gave me piece of mind.

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