Cascade Crew

82camaro383 · Posted: Tue Jun 26, 2007 4:11 pm Post subject:

My fan is wired to turn on when the ignition is on.

redlava · Posted: Wed Jun 27, 2007 3:45 pm Post subject:

Question do fans cause the alternator to create a significant amount resistance to warrent turning them off manualy. I was thinking about putting another switch in line for the fans so I would have fans off for those 15 seconds during the quarter then turn them back on after the quarter.

chevymad · Posted: Wed Jun 27, 2007 4:45 pm Post subject:

Xophertony · Posted: Wed Jun 27, 2007 4:54 pm Post subject:

in addition to what Brandon said....

the whole point of having the fan switch on at say 190* when your thermostat opens at 170* is so the thermostat is open once the car reaches operating temperature, relying on the fanswitch to regulate the temperature. thus reducing wear on the thermostat, AND allowing the block to cool more evenly by having alot more coolant flow.

if the fan is on always, the thermostat is regulating the temperature, thus a smaller volume of coolant is flowing through the block. this, while unlikely to be serious, can allow hot spots to build.

not a huge deal, but another reason to do an electric fan, and do it properly. if you have the single fan you can replace your thermo switch for 25$ with one that comes on around 220*, then hook up a small toggle switch to allow you to turn it on at an even lower temperature, this way you regulate when the fan is on, using the thermo switch as a fail safe, in case you forget to turn the fan on. this is how my six is set up. i usually flip the switch on at 200*.

Twilightoptics · Posted: Wed Jun 27, 2007 6:52 pm Post subject:

Electrics help heat the motor up to it's efficiency point quicker too.