Pagoda SL Group
W113 Pagoda SL Group => Research & Development => Topic started by: shanghaitom on March 21, 2011, 19:45:12
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I am restoring a 1970 280SL and have completely disassembled the heating unit. As many have commented, the airflow from the Behr blower is lacking. I work at SPAL, an Italian maker of fans and blowers, and asked our tech department to see what they could do. Because we don't offer a blower motor as a bolt-in replacement, the tech wizards took a blower motor (model A45) from a standard SPAL blower, and retrofitted it into the Behr unit. It required drilling holes in the motor housing for the two horizontal bolts that hold it in place and affixing a 3 speed resistor to reduce current draw for the car's existing electrical system.
The resistor is 3 speeds, but only low and medium are hooked up, which seems to offer plenty of airflow over the standard. However, I have yet to install it in the vehicle. Attached are a couple pictures of the before and after. You will see that the resistor is placed near the blower wheel to offer adequate airflow.
Hope you find it interesting!
Cheers,
Tom
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Nice work
When do you start taking orders on these units? ;)
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If anyone has interest, I'd be happy to pass along the contact info for the guy that actually did the work!
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Tom,
I bought a SPAL Type 017-A40-22 to replace the air conditioner blower in the car. I was wondering what to do to improve the heater blower. Just today, I pulled the blower and heater core out. What would be an approximate cost to make a kit with all the parts one would need?