Electric fan recommendations - Foxbody with modmotor

[Gabe]

5-20 years ago it seemed that the early 90's Tarurus fan or the late 90's dual Contour fan was the way to go. Any other suggestions on what to use these days? Mark VIII fan?
I looked at S197 fans, but they are too tall. Any other recommendations on what to use?

Ford Motorcraft Taurus fan is available on Rockauto for $100
Only aftermarket brands of Contour available on Rock Auto
LMR has the Contour fan, but does not list if it is NOS or aftermarket (which leads me to believe it is aftermarket).

I haven't found flow data for the Taurus, Contour flows 3,500 CFM

I have a 04 Cobra computer with Ron Francis wiring kit which has fan control, fan wired via a relay. I believe I will add a heavy duty relay such as
http://www.texasindustrialelectric.com/relays_0332002156.asp

Any other suggestions or recommendations?

[m_owing]

The contour fan keeps coming back as the highest CFM when I look into it.

This fan is available locally too.
https://www.thewrenchmonkey.ca/auto-parts/ford/contour/1995/dual-radiator-and-condenser-fan-assembly/

It is aftermarket, so I can't speak to the quality, but it is brand new. This will most likely be my plan once I decide to ditch the old faithful clutch fan.

As for the controller, it seems the contour fan blows fuses and trips most fan controllers. The startup current draw is very high. I don't know enough about the controller you linked. But I did find this: http://www.dccontrol.com/Multispeed.htm

They are apparently made to order (read: wait time) but they have one that will control ford high amp, dual speed fans. They also sell the loom connector specifically for the contour.

[ZR]

While the DCC controllers do work well, the wait to get one can be lengthy. Installed a number of them with only one failure.

[ZR]

Just used one of these high amp units from Spal on our GT40 build, seems like a quality piece.

https://www.holley.com/products/cooling/wiring_harnesses_and_relays/parts/FRH-HO


https://images.holley.com/583x/frh-ho_0118159.jpg

[Gabe]

Decided to go with a Contour fan (with Bosch motor) and an 80 amp relay. All installed and running great. Operating both fans together via the Ron Francis controller

Seeing significant improvement in operating temperatures since completing the install, but have only had moderate driving. Will be interested to see how the next track day goes with it

[m_owing]

Great to hear. I have a lot of questions...

Fan:
Where'd you get the fan? It's the dual fan/dual speed fan? Does it normally come with bosch motors?

Controller:
Which Ron Francis controller did you get? How does it measure temp? (rad probe, threaded intake tap, etc)

[Gabe]

From the research I did, FMC fans were supplied with Bosch motors, I sourced a used one via ebay

I am operating both fans as one, so only single speed fan arrangement (both on, both off)

I have a Ron Francis harness for the motor conversion, it includes the fan controller. Fan turns on and off via the ECU and was programmed to turn on/ off when i had the car in for tuning
http://www.ronfrancis.com/prodinfo.asp?number=MK%2D97A

[m_owing]

That's very cool. Does the single 80amp relay you got work for both fans? I didn't realize based on your first post how the aftermarket wiring harness incorporated the fan controller. I do now though!

I saw your car in another thread it looks great, and the setup is awesome. I just ordered a mishimoto rad, probably the same as yours, direct fit for fox.

[Slick_89_Hatch]

Did you consider a delay between when the first and second fan turn so there isn't a huge current draw on your system when they turn on?

[Gabe]

Did you consider a delay between when the first and second fan turn so there isn't a huge current draw on your system when they turn on?

Was a thought if need be, but doesn't seem to be a requirement. Have seen no voltage fluctuation when the fans turns on/ off

[1BAD92LX]

Decided to go with a Contour fan (with Bosch motor) and an 80 amp relay. All installed and running great. Operating both fans together via the Ron Francis controller

Seeing significant improvement in operating temperatures since completing the install, but have only had moderate driving. Will be interested to see how the next track day goes with it

So your track temps were ok? Mine were not, looking into new rad fan set up

[Gabe]

Hey Brad,
good to meet you yesterday.

My answer is not quite so simple

I am using electric gauges in the car, I have had some concern that the water temp gauge/ sending unit is not reading accurately once the car starts getting pushed (ie track days) as the temperature has been increasing dramatically (90-100 degrees C on the street, (110 - 120 C) on the track, sometimes only after 2 laps. Oil temperature on the street is 75-80C, 85-90 track. To validate the theory, I installed a mechanical gauge and attached the capillary tube to the outside of the crossover tube that the sending unit is located on.
Obviously there will be some losses in thermal conductivity of the metal tube, so I took measurements during regular street use to get a baseline for how much lower the mechanical gauge was reading, was around 8-10 degrees. when on the track, it was reading lower by 20 degrees. this leads me to believe the electric gauge is not reading properly. I also confirmed via a infrared thermal gun on the crossover tube.

So, long story short, yes I believe my track temps were excellent yesterday

[RedSN]

So your track temps were ok? Mine were not, looking into new rad fan set up
Same here.

My temps stay at 190. The second I run at higher RPMs the temp jumps to 200-210. Yesterday my temps were climbing past 215 and kissing 220. My setup includes a new water pump, new Northern rad, and Mocal oil cooler.

[1BAD92LX]

New water pump, new 3 row fluidyne rad and mishimoto oil cooler here. temps were approaching 230 when driving it hard.
Temp read from autometer mechanical gauge

[1BAD92LX]

Currently have a flexalite black magic fan. Says it’s good for 3300 cfm.
Maybe the 10 year old electric motor is worn out?
Contour fans do 3500 cfm.
https://lmr.com/item/SVE-8607K/mustang-contour-fan-conversion-kit-79-93
Pricey kit but pretty complete

[ZR]

You'll find many of the less powerful fans see the ratings based on zero restriction meaning being held up in the air with no rad to pull through. Typically, if it draws big amps it moves big air.

[1BAD92LX]

Off their website shows my fan draws constant 18 amps

[ZR]

Compared to a Taurus or similar, moves very little air.

[Zippy]

I linked this post to Gabe, but I'll share to everyone. Someone off FB shared this info
Not really sure what the 'mods' were but looks pretty good on there.

"2020 Dodge Challenger 18” 3100+ CFM fan fit perfect on my Ron Davis and the factory overflow fits great with a few mods. These are only 3.5” thick, 25 amps and best of all $58 on Rock Auto"

21415

21416

21417

[USAWIT2]

I linked this post to Gabe, but I'll share to everyone. Someone off FB shared this info
Not really sure what the 'mods' were but looks pretty good on there.

"2020 Dodge Challenger 18” 3100+ CFM fan fit perfect on my Ron Davis and the factory overflow fits great with a few mods. These are only 3.5” thick, 25 amps and best of all $58 on Rock Auto"

21415

21416

21417Looks a lot like the Mark Viii fan, looks like a cheap replacement if mine take a craphttps://uploads.tapatalk-cdn.com/20200830/53b870a25be4dac8b540eac8f2d3ad4b.jpg

[Gabe]

Off their website shows my fan draws constant 18 amps

Each of the two contour fans draw 21 amps at FLA. Rated to 3500 CFM

[Gabe]

Challenger fan looks like a great option, especially with the integrated overflow reservoir.

I will post up some pics of my install tomorrow, but it is a perfect fit, covers the entire rad, very slim (not a concern with my car as I have a fair bit of room to the various pulleys

[1BAD92LX]

Any body familiar with Dakota Digital PAC-2800-BT?
LMR has this kit. Pricey but looks complete.
https://lmr.com/item/SVE-8607K/mustang-contour-fan-conversion-kit-79-93