Cooling fan

[longbedGTs]

Go electric and do away with the belt driven fan.

I'm about to convert my 86 Ranger Diesel to an electric fan. Hope it will free up some HP and maybe see a rise in MPGs. I'm guessing that the best place for the temp sensor is to T into one of the hoses going to the heater core? Is this ideal? If so, which one?

[geezer101]

I'm about to convert my 86 Ranger Diesel to an electric fan. Hope it will free up some HP and maybe see a rise in MPGs. I'm guessing that the best place for the temp sensor is to T into one of the hoses going to the heater core? Is this ideal? If so, which one?

The best place would be either in the bottom tank of the radiator (the manufacturers standard location) or in a joiner in the bottom radiator hose. If you put it anywhere upstream the fan will try to run continuously - the engine will hardly reach operating temperature (beating on the fan and drawing current off the battery unnecessarily). By placing it where the coolant has passed through the radiator, the temp sensor will 'know' it's temperature had dropped to below operating temps and shut off. Get one of those hose adapter things off ebay. Cheap and they work.