mustang cobra, mustang GTR, mustang GT, mustangs of all types for years now. town cars, crown victoria's, minivans, taurus most every car that ford can put a 16" fan on they do. the other compact cars use twin 14" one for AC one for cooling. if fords research and design team hasnt found a reason to run 2 fans on their cars for the past 15 years i dont see how a buncha people on a message board would know better? do you?

 

Thanks everyone for your input...I think after hearing Joe and Faster150, Ill look into a single fan. I live in Alabama and use this truck for commuting during the week, leisure on the weekends and occasionally will use it for towing and hauling.

 

I was just on Summit Racing's website and it looks like they dont sell the dual 16" derale fans anymore. I guess if I was considering one fan, certainly dual 13" fans would work right? It says they produce 4,000 cfm.

 

HI!... Well I must be really smart then. How about the cost? DUH!!!!! It would cost the auto makers a fortune to add another fan to every vehicle they make. Trust me when I was a mechanic, I saw plenty of single fan set-ups on stock vehicles fail. Probably around 20-30 a year at the shop I used to work at, oh wait, it was a FORD dealership.............

 

HI!... Mine are not duals together. I bought TWO single DERALE 16" electric fans and installed them side by side. You can see they are not joined in the pic I posted. Each one of my fans is rated at 2200CFM or 4400CFM combined. Their pretty quiet when running.

 

CFM isn't the only thing to consider. You need to actually use the radiator. If you're flowing 16,000CFM through a 3" diameter fan, you're not really helping yourself. If you look at the stock fan, it's got a shroud on it that forces the fan to draw air from the entire radiator. This is the same reason why 80% of the front end of the truck is ducting/venting for the radiator and the other coolers.

I would say that 2 fans of just about any CFM would work just fine. You don't need mega-CFM numbers as much as you need airflow across the entire radiator. Try to cover as much of the radiator with fan as possible. If you want to be really fancy, make or buy a setup that has a shroud on it so all radiator air must pass through the fan. Make sure it's aerodynamic though, otherwise you'll reduce airflow across the radiator at speed.

 

Hmm ok but how do you make sure it's aerodynamic?

I have pondered the shroud question - and my 92 already has a shroud for the belt-driven fan, so I'm figuring on a single efan for me, that's going to work with the existing shroud, so I don't have to build one and worry about electrolysis etc if I were to use aluminum, etc....

The only issue I can see is, if you were to block the sides around the fan when the fans were flush mounted, and also flush mount the material you were using for the shroud, you'd effectively only draw air through where the fan/s are - if the fan's set back as is the shroud, like the factory arrangement, you'd be drawing air across the whole radiator, as you should.

I'm figuring I'm going to unbolt the clutch fan where the assembly bolts to the pulley and remove the whole assembly, leaving the pulley and belt as they are (I assume the pulley's the front end of the water pump, anyway) and mount the efan inside the shroud somewhat, as far as is needed to clear the pulley safely.

Wire it up with a supplemental relay so it runs 100% of the time with the a/c when it's on (as factory efans do) and perhaps have the whole fan running in a failsafe mode (so if the controller fails, the fan runs 100% rather than not at all.

I don't anticipate using two fans, (could you use two in push/pull mode, one front of rad pushing, one back pulling? I had a Ford Telstar - mazda 626 - that worked that way, the front fan was right in front of the a/c coils I guess, engine called just the rear fan, I think front fan only ran with a/c- this way you can have two large fans, that wouldn't fit side by side) my truck's old, not exactly a showpiece, and I just want the better fuel economy - not to mention it takes an age to warm up, I've been planning a variation on the oh-so-attractive cardboard on the grille setup for our winter. When I fit my efan, hopefully it'll reduce or completely remove the need for the cardboard, since the fan won't be running all the time.