Imo000

Last weekend I was working on a project car ('98 Mercury Mystique V6), pulling the engine and trans to change the trans with a good one. After the eng/trans was out, I took a break and looked around the empty engine bay, when I noticed something interesting. The fatory dual fans and shroudn looked very thin in profile and the shroud dimensions looked close to that of the 928. I took a rough measurement from my 928 rad core and measured the shround/fan dimensions of the Mytique. Sure enough they are about the same ~17" X ~24" with an overal thickes of only ~3".

I already have a Hayden fan on my 928 but if I didn't have it and wanted to upgrade from the viscous fan, I would really consider this as a good reailable and inexpensive alfternative. OEM quailty is often supperior to most aftermarket product.

Anyone that is thinking of changing their belt driven fan to a pair of electrics might want to look into using these. I've seen them sold online for ~$200 but you can find good used ones for around $50 at any wrecking yard.

Found a nice clean pic of the Ford/Mercury fan assembly online so anyone interested can use it as a guide.

Mike Frye

That looks like a cool alternative.

Question: Do fans just go by size or is there a speed or flow amount that could vary? What about current draw? I have no idea, I'm just asking.

Imo000

Most aftermarket fans have a CFM and amp draw ratings. The larger the CFM the better but at some point noise and amp draw can become a problem.

I'm sure there are others that know much more about this subject.

kaptnknemo

Would dual electric fans stay on all of the time, like the belted fan does? Does anyone know of an available fuse or relay for an early 86? My stock system overheats when idling (with the AC on) in line to pick up the Kid on a Florida summer afternoon. The fan in front of the condenser works, I think its just too damn hot and humid for stock.

TIA
KK

jon928se

Those fan motors look like they could be the same as 928 fan motors - I am sure there other cars out their in the US with the same fans as the 928.

Imo000

You guys down under...or should I say even more down under, have this car running around too but with a difeerent name. They are sold in Europe and around the rest of the world under the badge Ford Mondeo. The V6 mondel is what i'm wokring on.


kaptnknemo,

There is a local 86.5 928 that has simmilar problems. Only gets hot while idling in traffic on a hot day. The problem is that his viscous clutch is not working properly. It's too loose and the fan doesn't spin fast enough.

There is a rather easy way to test it. When the engie is up to operating temp, just sping the fan around, by hand. If it roatates more than ~ 3/4 turn then the clutch is shot (problaby low on fluid).

As for the variable speed option, well that all depands on what type of a fan controller is connected to these fans.


I hope this helps!

perrys4

[QUOTE=NJSharkFan;4605294]That looks like a cool alternative.QUOTE]

No pun intended, right?

Angel84-928

Can find it NEW on Rockauto for $196.99 for Motorcraft PN: RF81 or $129.89 for Dorman PN: 620104

No relation.

I'd like to know what type of control would be used.

I like the look of the one from 928 Motorsports personally.

PorKen

Mine did the same when I bought it. A newer fan clutch, and new pulley bearings, fixed it, and made the A/C cold (after I disconnected the heater valve!).

Here is a list w/pics of the Dorman lineup:

http://www.northernautoparts.com/Pro...ProductId=2816

Bill Ball

Good detective work. This fan assembly is also used on the Ford Contour (sister of the Mystique) 95-2000, if you are shopping dismantlers.

Other PNs:
Platinum #: 2110304
Dorman #: 620-104
Partslink #: FO3115115
Hollander #: 674-292A
OE #: F8RZ8C607GE
http://www.1aauto.com/1A/RadiatorFan...FA00050/136888

dr bob

The most obvious control would be using a couple different temp switches if you don't like the idea of both fans cycling on and off together. The AC clutch circuit feeds both relays through isolation diodes so you have full-speed both fans when you need the extr capacity for the AC load.

The S4+ variable-speed controller is interesting but way too complex for what the two fans really need in the early cars.

Remember also that you can install these behind the radiator in place of the belt-drive fan, and leave the original pusher fan in front for some substantial airflow. Just make sure you have enough wire and alternator capacity for sitting stuck in the drive-through in summer in central Florida. Maybe turn the headlights off...

Imo000

Good point Bob. I thought it vas obvious but it's worth mentioning that these should only be used as puller fans intalled behind the radiator. Just checked the repair manual and the fan fuse is rated 60A unit.

Also, Bill is correct and I forgot to mention that the Ford Contour is the sister car of the Mystique.


Another nice part that could be used in the 928 is a one touch power window relay. It is located in the driver side door. I'm not sure how easily can this be adapted to the 928 but the picture showed that it is a simple 2 wire relay. Maybe it's resistance based load switch. Only the driver side windos has this option on but two of them could be used on the 928.

I will look into this onece I have the 928 all buttened up.

Alan

Imre - Paragon also has an express up/down unit. These typically will not work on a 928 - at least not without also swapping the switch and motor connections dur to the stock configuration. They will not work at all on later S4's with the express down feature but obviously aren't needed...)

I suspect its just a sustained on relay (so basically just a timer)

Alan

Imo000

Ohh ok I see, well it was just and idea.

kaptnknemo

Dos anyone see a problem with screwing the two halves of the clutch together and letting the fan run at pulley speed all of the time?

KK