Adapting a 92-94 Ranger heater blower motor to an early FJ40

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May 12, 2021
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Hey gang, I created this 3d printable blower wheel for folks adapting the 92 Ranger blower motor to an early FJ40. This can be printed on any SLA or SLS printer (I don't suggest using an FDM printer like a prusa or a creality, the layer line orientation will make this part weak in key areas) or JLCPCB can spit one out in Nylon SLS for around $40.
I'm not able to compare the airflow to factory since mine was already broken, but it does work well and shot all manner of bugs and nasty stuff out of my defroster vents.
I will continue to experiment with the attack angle of the blades and post updates to printables as I do, but it works fine as is for folks in need before winter sets in.
Hope this helps!

Download the STL file here

The white wheel is the Ford one, the green is the 3d printed one (scratched to hell from testing)


fan.jpg
 
Joined
May 12, 2021
Messages
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st louis
Btw are they high low or do you need to use the oem resistor
Since mine was borked, I don't really have a comparison I can make. I know that they sell a 3 speed resistor for this motor, but it's designed to be in the path of the airflow to keep it cool unlike the external ones on the 40, but it should be easy to wire up an external one. I plan on using a PWM motor controller knob instead of a high/low resistor myself.
 
Joined
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Messages
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st louis
To give an idea on how much air this blower moves, this is without the gasket between the blower and the vent, so air leaks all over the place and it is still able to hold the glove.
 

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