installed efans...
12-27-2011, 09:08 PM
#13
Senior Member
Hey guys I just installed my electric fans today,
Does anybody know of what kind of performance gains or mpg gains if any now that I have them?..
Btw my truck already has a k&n intake and magnaflow exhaust.
Haven't test drove the truck,gonna do it tomaro but i was just wondering what was the average hp to mpg?
Does anybody know of what kind of performance gains or mpg gains if any now that I have them?..
Btw my truck already has a k&n intake and magnaflow exhaust.
Haven't test drove the truck,gonna do it tomaro but i was just wondering what was the average hp to mpg?
12-27-2011, 11:16 PM
#14
Senior Member
Thread Starter
No controller for now,..my friend has had them on his truck for about a year and a half just hooked up to the ignition,so as soon as you turn it on the fans turn on. I'm gonna have it like that for a while. I used some relays and bot the Ford windstar fans,pretty much bolted up like the rest,I bot them for 50 I did the install
12-28-2011, 09:13 AM
#15
Moderator (Ret.)
A controller is highly recommended, as it controls the amount of current the fan draws at spin up. A good controller will limit the electric motor to around 20 to 25 amp initial start, then keep it constant at under 20 amps.
Please tell me you installed a fuse as well when you connected it straight to the battery....
Efans gain you colder AC temps at idle, and less drag on the waterpump, although I've not read any waterpump failures on this forum. As to HP gains, don't spend $200 plus dollars expecting HP/TQ gains. You'll do better with a tuner. The clutch/fan is a heavey unit, so that may help on a bit of HP (not measurable though). It's a much cleaner look though. Interesting that the new Ford trucks come with efans from the factory. I believe this was because of the complaints folks had with the AC during long idle situations.
It's highly recommended that you use a shroud with your efan(s); just slapping them against a radiator with those cheap straps is useless, as you'll get better cooling with the stock fan and shroud. The better kits (read more expensive) have built in shrouds. Folks don't go this way because they are expensive though.
And running the fan at startup is not a good idea either. The stock electrical clutch kept the stock fan off to allow the engine to warm up quickly, preventing polution and more fuel to be consumed during warmup. Especially in the colder winters up north. It's best to get an engine to operating temperature as quickly as possible to be more efficient. A reason you also never want to run a vehicle without a thermostat (unless you race full time).
Please tell me you installed a fuse as well when you connected it straight to the battery....
Efans gain you colder AC temps at idle, and less drag on the waterpump, although I've not read any waterpump failures on this forum. As to HP gains, don't spend $200 plus dollars expecting HP/TQ gains. You'll do better with a tuner. The clutch/fan is a heavey unit, so that may help on a bit of HP (not measurable though). It's a much cleaner look though. Interesting that the new Ford trucks come with efans from the factory. I believe this was because of the complaints folks had with the AC during long idle situations.
It's highly recommended that you use a shroud with your efan(s); just slapping them against a radiator with those cheap straps is useless, as you'll get better cooling with the stock fan and shroud. The better kits (read more expensive) have built in shrouds. Folks don't go this way because they are expensive though.
And running the fan at startup is not a good idea either. The stock electrical clutch kept the stock fan off to allow the engine to warm up quickly, preventing polution and more fuel to be consumed during warmup. Especially in the colder winters up north. It's best to get an engine to operating temperature as quickly as possible to be more efficient. A reason you also never want to run a vehicle without a thermostat (unless you race full time).
Last edited by Mod (Ret.); 12-28-2011 at 09:18 AM.
