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Old 05-12-2011, 10:44 AM
flyoil flyoil is offline
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Default Re: Davis Unified 10mm spark wires - Better?

Originally Posted by FireRanger View Post
Not sure what you're trying to say but that's not a factor. Voltage remains constant until the load exceeds the amperage rating of the alternator. If you have a 90 amp alternator, you can run 90 amps worth of electrical devices (including everything the truck came with). Beyond that point, the battery has to make up the difference and voltage will start to drop. Installing an electric fan is very much within the capabilities of all of our stock alternators to handle.

Now, adding an additional electrical load will add an additional mechanical load on the alternator's pulley so it will add a bit to the engine's load. however, the added alternator load on the engine is much less than the load of the OEM mechanical fan.

And even better, if you set the temperature at which the fan turns on/off to be about 15 degrees above normal operating temperature, the thing will never even need to run unless you're going very very slow or sitting idle. Air through the grill while you're moving is more than enough to provide adequate cooling without the fan running. So you'll always have the power and economy gains. Also, it will always run while the AC is on.
i have a 3.0 with e-fan. I've noticed engine temperature is around 192 - 195 when driving around (I have a UltraGauge hooked up) so I waited for temperature to reach 215 and set my e-fan accordingly. Now, I can drive around and e-fan won't come on unless I am doing a lot of city driving.
2005 Edge; 3.0; AT
Mods: Electric Flex a lite; 180 Black Magic Xtreme
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Old 05-12-2011, 12:44 PM
FireRanger FireRanger is offline
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Default Re: Davis Unified 10mm spark wires - Better?

That is EXACTLY what I did with mine. My fan comes on at 220 and shuts off when it drops down to 200. So it never turns on unless I'm sitting idle or moving slowly for a long time. The electronic controller I'm using is tied into the temperature sensor circuit and has distinct on and off temperatures setpoints. It has an AC demand input to run it constant when the AC is on.

It also has a disable input for water crossings and failsafe that automatically overrides the override at 260 degrees incase you forget to turn it back on. I don't use any of that since I don't drive through lakes.
2003 Edge 4.0 4wd

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Old 05-12-2011, 01:40 PM
DHEM DHEM is offline
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Default Re: Davis Unified 10mm spark wires - Better?

People have told me that a screaming demon coil pack really only smoothens out idle.
'05 2wd Ranger xl with the 3.0

MODS-Alpine head unit, throttle cable mod, Black Rock wheels, FX4 lvl II axle swap, pooleo's camo painted bezel and mustang dome, painted/aftermarket headlights/tails fold-a-cover and over 100 hp in stickers
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