Electric fan size and installation pictures

[manimal]

I replaced my 12" with a 14". It's a generic ebay special and I had to cut the top and bottom tabs off. It barely fit and required a bit of flexing to pop in. Unfortunately I don't have any pics of it installed, but I'll take some in the next day or two and update. Red circles are where the tabs were removed. A small amount of the fan is covered, but not enough to appreciably reduce flow. 

[LikeStig]

I used a 12' fan from Ireland Engineering and some $2.50 electric fan brackets from Summit racing. Although I don't have any miles on this setup it was easy to install and required no modifications.

[xr4tic]

I have an ebay Honda aluminum radiator/fan combo.

 

With the fan fitted, I can just squeeze it in past the water pump pulley.

 

[silasmoon]

I have a fan wired up in this configuration I am pretty sure - although it stays on even when the car is off. My guess is that the thermal switch needs it power supply changed to switched power vs battery. Thoughts on how to achieve this?

[Healey3000]

13 hours ago, silasmoon said:

I have a fan wired up in this configuration I am pretty sure - although it stays on even when the car is off. My guess is that the thermal switch needs it power supply changed to switched power vs battery. Thoughts on how to achieve this?

A relay.

[xr4tic]

14 hours ago, silasmoon said:

I have a fan wired up in this configuration I am pretty sure - although it stays on even when the car is off. My guess is that the thermal switch needs it power supply changed to switched power vs battery. Thoughts on how to achieve this?

 

Depends on how you wired it up, I run ground through the thermal switch to trigger the relay (pin 85), then ignition power to the relay (pin 86), battery to pin 87, then the fan to pin 30

 

[pkchopp]

Theses are real simple to use

[Dudeland]

This is the install of my 12" fan in front of my condenser.  It is just free spinning now.  A/C is getting finished up shortly.   It is bolted to the top and bottom of the condenser. 

 

Regards

 

 

 

 

[silasmoon]

Arts and Crafts time - I pulled the relay off and examined the wiring. It was not really standard. The fan works fine, but just runs even when the car is off, as its connected to the battery with a fused wire. Here is the diagram:

 

[xr4tic]

18 minutes ago, silasmoon said:

Arts and Crafts time - I pulled the relay off and examined the wiring. It was not really standard. The fan works fine, but just runs even when the car is off, as its connected to the battery with a fused wire. Here is the diagram:

 

 

All you need to do is disconnect the battery wire to terminal 87 and run an ignition powered wire to it, then it will only come on when the ignition is on.

[silasmoon]

Would it be reasonable to just do this from the ignition coil? I have the relays for the horn & lights, but I am not sure how to split off from them. I don't want to cut up the original harness. 

[rstclark]

Go back to the wiring diagram done by "Mike"   A thermo switch on the topside returning hot to the radiator with a manual over ride is the way to go

The fan turns on  when the returning water is hot   -- not later when it leaves the radiator in a bottom thermo switch installation.    and you have the option of just turning it on manually if  the temp gauge goes up beyond your comfort level 

[uai]

I used the larger fan, but it needs both patience and slight force to squeeze it in.

[jimk]

I don't see the diode in this discussion.  Without one (if the relay doesn't have one internal), the thermo switch gets a big electrical spike when the relay opens.  Switch works for a while then burns out.

[xr4tic]

9 hours ago, silasmoon said:

Would it be reasonable to just do this from the ignition coil? I have the relays for the horn & lights, but I am not sure how to split off from them. I don't want to cut up the original harness. 

 

Not if the coil has a resistor wire running to it.  What year is your car?  If it's a later year and had emissions wiring that was removed, there should be a wire you could use off of that.