AU thermofan operation
I have just tested my new AU thermofan set up and I must say, as I expected it seems to run a little hot, even in the cool of the night. You can really tell when they start up because the instrument light dim momentarily.
My question is, how long after the needle mooves off the centre of the gauge (normal 82 degress thermostat) do you guys set the fan to come on. I realise that most of you probably do not run an adjustable temp controller, but I have one, Davies Craig capilary tube type, I doesnt leak thankfully.
I am worried that if I set it too high the fans wont be able to pull the temperature back down again. At the moment I have it set so the fans come on as soon as the gauge starts to moove. I feel this will lead to excessive operation of the fans and they will be on most of the time. And remember I tested this in the cool of the night.
My other option is I have a high flow thermostat sitting on the shelf. Even though it is 82 degrees also the gauge never mooved much off cold with it installed and I was worried about damaging the motor from running it too cold.
My set up is Bosch 85 A Alternator (from a 4 cylinder Magna but without the nice belt adjuster) and an Odysey 600CCA sealed battery. I am hoping this will cope with the load of the two 120W (= 20A total) fans and the other small thermo I have on the air con condensor. have a good Adrad triple core radiator.
1978 XC Fairmont GXL, Emerald green, Jade Int. 351C, 750 VAC, C10, 9" LSD
Air, steer, power windows................