My electric fan install

T

typhoon

New Member
Ignore the wiring, it is not tidied up as yet, waiting to see if any problems arise before hiding it all.
I bought two great little 10" fans, very powerful, they'll kick up dust off my front drive when they start up, and eclipse the stock clutch fan.
I'm running them with a Jaycar controller, it's a kit you solder together, it allows adjustment of on temperature and run time once the temperature is passed as it decreases.
Both fans have their own relays and power supplies for redundancy.
They work extremely well, and I'm also running an 88c thermostat, which really seems to help on these cold mornings.
Electricfans.jpg

I didn't like teh stock clutch fan, far too close to the radiator, in the way of many small maintenence operations, and just plain dangerous when adjusting distributor timing with a spanner! Plus it was just really inefficient when it was warmer. Yes the clutch worked.
The stock alternator keeps up with the fans when the engine is idling too.
Regards, Andrew.
 
Could you fit those fans in front of the radiators and have them blowing instead of sucking ?
Where does the Jaycar controller have the temperature sensor ?
 
They could blow, but the sheetmetal under the grill was an interference on my car, I suppose with enough time you could fit something in there.
The Jaycar controller has a probe (well, you install a sensor on the wires and make the probe, I used shrink wrap to make my probe), which can be installed anywhere. Mine is fitted between the fins in the radiator, right next to the top radiator hose.

Regards, Andrew.
 
Hi Andrew

I checked out the Jaycar website and was quite impressed - a whole raft of useful gadgets for the classic car!

One thought about your temperature probe. With the standard cooling system these cars are prone to blowing a bit of water out and running with the level in the rad about 1/2" to 1" below the top of the tank. Would it be wise to mount the probe a little lower? With the range of adjustment available in the switching unit it shouldn't be a problem to get it to do what is required wherever the probe is mounted! The other altenative would be to fit a header tank so that you are sure the rad is always full!

Chris
 
Header tank is on my list! Interesting cooling systems on these cars, never seen a radiator drop in level when engine is revved.........
My probe is in the cooling fins, about 2" below the top hose, so it shouldn't get uncovered, even with the stock system.
I've put a few Jayacar kits together before, very good, and easy to follow instructions. I am no electronics expert, and I can manage!

Regards, Andrew.
 
Hi Andrew

On the subject of header tanks, clearly any tank will do - a trip to the local breakers should yield something suitable. I actually used a plastic SD1 tank, cos I could get one easily and it had a track record of being OK with the V8. My original plan had been to mount it on the bulge of the inner wing adjacent to the air cleaner elbows (mine is webber carbed so plenty of spce there on mine), but I have been warned off that idea - apparently it needs to be significantly below the level of the existing filler neck. I must say I don't follow the engineering logic of that, but I'm assured by people who have done lots that it works much better.

Chris
 
My understanding is that so long as teh siphon point of the hose is below coolant level in the header tank, it will work.
On more than a few of our locally built cars here, header tanks were placed on top of inner guards, so I see no reason not to do this.
We can buy kits at the local parts stores here, universal bottle, brackets and hoses for around $30. I was planning to mount mine over near the coil somewhere, maybe even hang it off teh stay rod.

Regards, Andrew.
 
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