E-Fans?? Pulleys??........

[Tonto87]

I installed a Flexalite FLE270 dual fan on my 04-5.4l a while back. I love it.
It opened up space between Rad and and engine,you can change pulleys after install.
The hardest part was figureing out the wiring connection points.
I finally figured out a good fix that made for a clean install. I reinstalled the to deflector over the rad. to push the air down over the engine. My engine coolant temp usually showed 192. I used an infrared thermometer to chec temps a several locations (this is an unbelieveably valuable too and worth the cost) With the fans running and the fan stat set at 190 I was getting rad. outlet temps as low as 160. This caused the thermostat to close and the truck to run at cold Idleor run which uses more gas.
With the thermometer I could adjust temp. control to 220 which gave me an outlet reading of 194 and no more cold run conditions. Saw about 2 mpg increase if I keep my foot out of it like thats gonna happen. Fans don't run very long and stage in so I have not noticed any electrical loading at all. Hope this helps.

[Tonto87]

Oh, I bought the fan clutch wrench set at AutoZone for 29.50. I have already lent it to a couple of friends for a six pack. that puts price at 15 bucks at this point!

[bigterp]

I appreciate all the helpfull info.!!

Tonto87, I plan to do the e-fans and then eventually take care of the pulleys, as these seems to be the most logical progression. The more and more I check out FF Dynamics efan kit, the more I like them. They come with dual fans that have a 6000 Total CFM Rating, which should be plenty for my daily driving and occasional towing. They also come with color coded wiring, which HOPEFULLY will make the wiring process easier. I HATE DEALING WITH ELECTRICTY. I'll be sure to give you all a heads up on the FF Dynamics kit once I get them ordered and installed. Thanks again!!!!

[bigterp]

Actually the progression will be as follows:

Magnaflow SI/DO same side exit performance exhaust (Ordering this week)
Gryphon W/ custom 87 tow, 87 performance and 93 performance tunes (Hopefully by the end of the month)
FF Dynamics E-Fan conversion kit (Sooner than later)
Overdrive Pully Kit. Not sure from where yet (Hopefully my wife lets me live long enough to get to order this kit!!!)

[jmwilso2]

I had the same issue with mine. It was running way too cool. I have since adjusted it up by sitting parked and reving the engine up a bit and then setting the fan to kick in at 210 F but the coolant temp reading on my gryphon still seldom goes over 195 just from ram air flowing through the rad. I'm thinking I should maybe put in a different thermostat valve to get the temp up into the 200s.

[bigterp]

Originally Posted by jmwilso2

I had the same issue with mine. It was running way too cool. I have since adjusted it up by sitting parked and reving the engine up a bit and then setting the fan to kick in at 210 F but the coolant temp reading on my gryphon still seldom goes over 195 just from ram air flowing through the rad. I'm thinking I should maybe put in a different thermostat valve to get the temp up into the 200s.

That sounds like the best way to accomplish your goal. I may be way off here, but when researching the crap out of efans I though I read that the stock thermostat (on the 5.4L Tritons) is at like 190 degrees. If that is the case I would think that Ford found this to be the best operating temperature for our 5.4's and is probably best left that way. Is it benefical and/or safe to try and increase the operating temps of our trucks?? Again, I may be totally wrong here so please don't shoot me!!!!

[Longshot270]

Not all trucks have the fans click on at 190. Most people see 195 but I know that Jack's truck runs at 205 regularly. Slightly warmer temperatures will help combustion efficiency but oil starts breaking down around 250. I would not try increasing the temperature above 210.

[bigterp]

Originally Posted by Longshot270

Not all trucks have the fans click on at 190. Most people see 195 but I know that Jack's truck runs at 205 regularly. Slightly warmer temperatures will help combustion efficiency but oil starts breaking down around 250. I would not try increasing the temperature above 210.

I was referring to the water thermostat, not the fan. But I get what your saying. What would you guys say is the "optimal" running temp????

[cajunboy2208]

Mine has never went above 200.
It normally runs between 194-196 no matter how much I run it...