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how big electric fan?

i bought the mark viii fan, havent installed it yet but ive heard good things. and let me tell you, just looking at it, the thing is a monster. i can see why the cfm's are so high...

And for a controller check these out: http://www.hollisterroad.com/proddetail.asp?prod=MarkVIII

with one of these for temp: http://www.rockauto.com/catalog/moreinfo.php?pk=1134042&cc=1011294

Rock auto part #: 61318361787

Its a dual temp sensor, will turn on low speed at 180 and high speed at 195


Most guys say it never even gets to high speed.
 
I noticed in my recent search at the wrecking yard there is at least one additional component in the fan setups, looks to be some sort of electrical device, not quite sure what it is, but I wonder if it's not either a variable speed controller or a device to keep it from being so noticeable when the fan is started. This was mid-90's or later mainly Ford stuff.
 
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Anyone know the cfm of the windstar fans. I like how these fans bolt up compared to the single ones.

Ive been told my stock alt should do fine since I run almost no other electrions except for a basic 2 speaker radio, and lights of course.

What controllers etc are u guys running? Are they the same for dual and a single fans?

Also im doing this because its a toy and stock fan clutch went out.

What temps should i set it up for? My normal temps before clutch gave out was 160-170.
 
What is thermostat rating?

Realistically if you want the "benefits" of electric fans, and don't want to tax the electrical system more than necessary, you want the fan on/off temps to be substantially over the rated thermostat temp. If the "off" temp is the same or below the thermostat temp, and IF the cooling system works right, the fans will never shut off, because the thermostat is what controls engine temp. I'm actually a big fan of 195* thermostats for this reason...keeping an engine cold (160* or 180*) is a lot harder than keeping it warm (195*), which means more work for the fan and thus the engine.

As an FYI, stock on the TPI Camaros, fan *on* was 220*, and fan off was something like 215*. I changed that to somewhere around 215* on and 205* off. It cuts down on fan cycling when you are stopping and starting at lights, traffic, or any other situation where you aren't constantly moving. You shouldn't need fans when you are moving at a decent speed, and cycling on/off every time you stop for two seconds is pointless.

If two fans, I'd highly recommend two relays, a fan controller (whether simple temp switch, adjustable, whatever), and either a fan switch rated pretty high (80's Camaro was 240* as failsafe) if the relay(s) die, or a simple jumper assembly to temporarily hardwire the fans "on" instead of the switch.

I like using two fans and two relays for two reasons...cuts electrical load when not needed, and if one relay fails, you can swap the connector so the "primary" fan will still operate correctly.
 
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dyeager535 said:
What is thermostat rating?

Realistically if you want the "benefits" of electric fans, and don't want to tax the electrical system more than necessary, you want the fan on/off temps to be substantially over the rated thermostat temp. If the "off" temp is the same or below the thermostat temp, IF the cooling system works right, the fans will never shut off, because the thermostat is what controls engine temp. I'm actually a big fan of 195* thermostats for this reason...keeping an engine cold (160* or 180*) is a lot harder than keeping it warm (195*).

As an FYI, stock on the TPI Camaros, fan *on* was 220*, and and fan off was something like 215*. I changed that to somewhere around 215* on and 205* off. It cuts down on fan cycling when you are stopping and starting at lights, traffic, or any other situation where you aren't constantly moving, where the fans shouldn't be needed.

If two fans, I'd highly recommend two relays, a fan controller, and either a fan switch rated pretty high (80's Camaro was 240* as failsafe) if the relay(s) die, or a simple jumper assembly to temporarily hardwire the fans "on" instead of the switch.

I like using two relays for two reasons...cuts electrical load when not needed, and if one relay fails, you can swap the connector so the "primary" fan will still operate correctly.
Click to expand...

Thanks for the info, I have no clue what degree t/stat it has, I bought Krusty 3weeks ago. I was shocked how cool it was running, The previous owner did put a new HD radiator, hoses, t/stat and water pump on.
 
too cool is in some ways, WAY worse than too hot... verify your temps, and that it HAS a thermostat in it.....

if it's carbed, it more than likely has a 180 in it... EFI's are 195...
 
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