I was thinking about removing the stock fan & fan clutch on my truck. I have been told that it will add 15-25 HP at the flywheel. I have already looked into the fan kits and they are relatively cheep. I was just wanting some input on how to set the temp sensor or if I should just put the fan on a toggle switch. I was thinking of the coolant plug on the left front of the 4.2's intake. Any suggestions will be welcome

------------------
99 F-150 4.2L
True duals W/Magnaflows
Jacobs Ignition
K&N filtercharger
Custom programed chip
throttle body spacer


[This message has been edited by f150freak (edited 05-03-2000).]

 

I think you will be impressed with what you get from installing an electric fan. I bought a Flex-a-Lite electric cooling fan that has everyting your looking for built right into it. They make many flavors all with different AMP draws and CFM. Go to their web site and take a look. It is adjustable from 180-240F. It has a built-in shroud and is ultra quiet.
Russ

------------------
99 4X4 XLT S/C with ORP
5.4L 3.73LS
Flow Master Dual Exhaust
K&N Filter w/ Intake Mod
Flex-a-Lite Black Magic Electric Cooling Fan

 

freak,

I set mine by first warming up the engine and then letting it idle. My plan was to watch the temp gauge and as soon as it starts to rise above where it normally sits, I was going to lower the temp sensor adjustment so the fan starts. It sat for a long time with no fan running and never got too hot, so when I thought it was hot enough, I turned down the temp sensor very slowly until the fan started. The temp sensor I used (a Flex-a-Lite) mounts to the top radiator hose.

I wouldn't use just a switch to control the fan. If the engine gets hot and you don't notice, the fan won't be running when it's needed. I wired a switch in addition to the temp sensor so I can force the fan on or off, if needed.

------------------
Danny
'98 F-150 Std., RC, SB, 4x2, 4.2L, 5-sp, 3.08, AC, speed control, rear slider.
Mods: Mobil 1 engine oil, Red Line D4-ATF trans fluid, Edelbrock IAS shocks,
50 Series Flowmaster, K&N with airbox mod, electric radiator fan, Superchip

 

An old kitchen thermometer works great for this. Put the probe into the fins of the radiator and the dial facing out through the grill. I don't know what the optimum temperature is for the v-6, but I know for my truck it is around 195 degrees F. I set my fan so it would kick in at 210F

------------------
99 4X4 XLT S/C with ORP
5.4L 3.73LS
Flow Master Dual Exhaust
K&N Filter w/ Intake Mod
Flex-a-Lite Black Magic 150 Electric Cooling Fan
Jason "Hugger" Truck Lid