Heater Blower Motor Hybrid
Posted: Feb 06, 2015 4:56 AM
I have a Sofica car and had the classic squealing blower motor. I pulled it, oiled it with sewing machine oil and reinstalled. Squealed within a week. Removed it again, oiled it with turbine oil and it lasted a month before it started squealing again. Re oiled it and it lasted approximately a week before it started smoking whenever it was used. Bought a "good" used motor off the board here only to have that one start squeaking within a week as well!! Needless to say I've gotten quite tired of pulling the firewall cover in the cold weather and I want to fix it for good. I can buy a new Sofica assembly for ~$190 but there's that Bosch motor staring at me in the face for the low low price of $70.
My question is can I swap Sofica cages onto the Bosch motor? I've done quite a bit of searching and I've heard of people using bosch assemblies in sofica cars using the "newspaper trick" as apparently the Bosch motor housing is a bit smaller and lengthening the blower covers since the bosch assembly is 1/2" longer. In my searching however I found no results on mixing parts.
If the shaft diameters are the same, and the bosch cages are the part that makes the bosch assembly longer, I could put sofica cages on a new bosch motor and machine some delrin spacers to make up for the motor diameter difference and have an "almost new" sofica assembly that would drop in for $100 cheaper....

My question is can I swap Sofica cages onto the Bosch motor? I've done quite a bit of searching and I've heard of people using bosch assemblies in sofica cars using the "newspaper trick" as apparently the Bosch motor housing is a bit smaller and lengthening the blower covers since the bosch assembly is 1/2" longer. In my searching however I found no results on mixing parts.
If the shaft diameters are the same, and the bosch cages are the part that makes the bosch assembly longer, I could put sofica cages on a new bosch motor and machine some delrin spacers to make up for the motor diameter difference and have an "almost new" sofica assembly that would drop in for $100 cheaper....
