Dual Electric Fans Kit

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Shaun M Johnson

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I have rebuilt my 5.4 engine and now have it installed. I'm considering gaining some space, horsepower and efficiency from my engine by swapping my belt-driven fan for an electric dual fan with controller and sensor. Here is the fan kit I'm considering: Twin Cyclone Ultra Electric Cooling Fans

Flex-A-Lite also has a kit for this conversion but I cannot justify paying $6-700 for parts that look like crap (referring to the plastic on the shroud). Just wanted to throw that out there... looks like a $50 part max. Okay, back to the concerns and questions. Here is the kit: Direct-fit dual electric fans for '97-'05 Ford F-150 truck (non Super Duty), Expedition, Navigator and Blackwood


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1)
My model vehicle also has an A/C condenser behind the air conditioner (engine side, not front bumper side). Would a dual fan kit fasten directly to the back of the A/C condenser? I'm thinking this setup would block the cool air from reaching the air conditioner--is that right? I know the original belt-driven fan is oriented the same (and further away from the A/C condenser) but, thought I'd ask for more insight.

2) Are there any cons to using one of these conversion kits?

3) Should I use a 12 volt or 24 volt fan system?

4) It appears the FF Dynamics kit (first link in this post) does NOT have a full shroud to cover the entire core--do you think this is a problem, or maybe just 'not as efficient' as a setup that does have a full shroud?

5) Do you have any recommendations for setting the temperature range at which the fans will kick on/off?

6) Thoughts on a gauge? Does anyone have any personal experience with digital and/or analog gauges? I am leaning towards this one: GlowShift 10 Color Digital 300 F Water Coolant Temperature Gauge Kit - Includes Electronic Sensor - Multi-Color LED Display - Tinted Lens - for Car & Truck - 2-1/16" (52mm)

7) I suppose I will also need a POD for the water temp gauge, any ideas?

GAUGE PODS:

7a) My preferred gauge POD: Aurora Instruments® - 3-Gauge Pillar Pod, Black

7b) Another potential gauge POD: Auto Meter® - Triple Dash Top Gauge Mount

MY VEHICLE:

1997 Ford Expedition XLT 5.4L v8 Modular SOHC Non-PI heads 330 Windsor block
 
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craig sargood

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I actually have this unit, unfortunately I have not installed it yet, as I’m under a lot of construction. But I only paid about $400 for it, and it seems pretty nice and well built, maybe the color is a little weird cause of the material, I’ll let you know how they work once installed.
 

ExplorerTom

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I have an acedotal story about fan shrouds. I know a guy that had an overheating problem on the big block motor of his motorhome. It didn’t have a fan shroud around the fan- it was an old motorhome. He added a fan shroud and it stopped overheating. So take that for what you will.

I have the flex-a-lite kit pictured above. It may look cheap, but it is a quality piece. I recently adjusted the controller down from where it was when I got it, and now the fan kicks on a lot more and my temp fluctuates between 190-197. Before it was more like 195-205.
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As far as efficiency, power and all that. Yeah sure, it has to be an improvement. But I haven’t been able to tell. I track all my fillups. Never saw an increase. A/C performance in traffic is significantly better. It’s not any noticeably quicker.

How do I know what my temp is? I have an UltraGauge.
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It will display up to 8 parameters monitored by the OBD system.

The gauge on the steering column is the transmission fluid temp AFTER it has gone through the cooler and before it goes back to the transmission.
 
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Shaun M Johnson

Shaun M Johnson

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I would love to see how your fan is wired and where your gauge is connected. How is your Ultra Gauge connected?
 
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Shaun M Johnson

Shaun M Johnson

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I may have went a risky route but we will see. Here are the fan kit details:

Electric Fan:
  • American Volt high performance 14 inch reversible 12V electric cooling fan.
  • Custom upgraded 90 watt motor produces more CFM air flow volume.
  • Fan motors are sealed to be water and dust resistant, increasing longevity.
  • Fan is configured by default as an air puller out of the box.
  • Blade and wiring can be reversed to make the fan an air pusher.
  • Durably built to be shock resistant for on-road and off-road vehicle applications.
  • Universal design for all radiators, oil coolers, transmission coolers, condensers etc.
  • Includes shroud mounting feet attachments and complete mounting strap kit.
  • Please visit our eBay store or website for more sizes and thermostat kits.
Specs Per Fan:

Blade Size
- 13 Inch
Blade Type
- Curved
Motor Size
- 90 Watts
CFM Rating
- 2500
RPM Rating
Amp Draw
- 2100
- 12 Amps
Material
- Plastic Shroud/Steel Motor
Dimensions
- 15" x 14" x 2.5" thickness at center x 1.5" thickness at edge

Thermostat Kit:
  • Adjustable fan thermostat kit for any automotive vehicle.
  • Probe measures liquid or contact temperature and sends power to the fan.
  • Flexible turn-on/turn-off temperature control range of 32-248'F (0-120'C).
  • Thermostat can be wired as a normally closed or normally open circuit.
  • Turn-off temperature is always 15 degrees less than turn-on.
  • Thermostat dial has both Celsius and Fahrenheit temperature markings.
  • Probe can be mounted in between radiator fins or inside water inlet/outlet tube.
  • Capillary thermostat wire is 30 inches in length.
  • AC/Manual override circuit built-in to wire harness.
  • Installation instructions and diagram included.
Kit Includes:



(1) - Adjustable Thermostat Unit

(1) - Push-in Capillary Probe

(1) - Wiring Harness

(1) - 40 Amp Relay

(1) - 30 Amp Fuse

(1) - Large Ring Terminal

(3) - Small Ring Terminals

(2) - Butt Connectors

(4) - 4'' Wire Ties

(2) - Female Connectors

(4) - Sheet Metal Screws

(2) - Splice Connectors

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Shaun M Johnson

Shaun M Johnson

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Custom radiator shroud before and after the bending process with my homehome brake. I think it turned out okay for having inadequate tooling.

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Shaun M Johnson

Shaun M Johnson

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Here you can see I tried the aluminum rod and torch technique. It didn't work for me. I don't have a welder and this is where I am stuck at this point of building the shroud before I can add the other planned components.

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Shaun M Johnson

Shaun M Johnson

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Here I show everything clamped into place. I think it looks great so far. I haven't added the rubber seal, which, I will be using a roll of garage door seal. It's cheap, lasts, handles weather and is readily available. I have cut out 4 tabs that will allow me to secure the custom radiator shroud in the same fashion as the factory radiator shroud (two hooks on the bottom and two bolts at the top).

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ExplorerTom

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I would love to see how your fan is wired and where your gauge is connected. How is your Ultra Gauge connected?

UltraGauge is connected to the OBDII port. It reads all the ODBII sensors.

The other gauge is connected to an Autometer temp probe in a brass fitting in the transmission return line.

Fans are wired via the Flex-a-lite diagram. Nothing special.
 
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Shaun M Johnson

Shaun M Johnson

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I don't have a flex-a-lite diagram. I do have a probe for the fan kit. Did you have to weld a bung into the transmission return line?
 
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