View Full Version : Need '78-'83 911SC Heater Blower Motor
12-08-2005, 12:40 PM
Hi, Does anyone have a working Engine Compartment Heater Blower Motor (ductwork and fan blades not required) for a 911SC. Please send me an email with your asking price and (if possible) a JPEG picture of the motor. My email address is: firstname.lastname@example.org
You expeditious help is appreciated - it's getting cold in the car.
12-08-2005, 03:31 PM
A new OEM motor is spendy and there is no guarantee that a used one will function.
See this thread: Good DIY fix for under $30.
12-09-2005, 05:46 PM
I've made my order from Graingers today. I'll let you know how it goes. Thanks...
12-09-2005, 08:42 PM
I made one of those and they work pretty good. Save your old motor, I've been stocking up on these and have also made good motors out of the pieces.
It usually depends on if it's the bearing or the windings. I've found a way to swop bearings. Let me know if you have any problems. Somewhere I have some extra granger bushings. I think they came in packs of 4.
12-10-2005, 09:07 AM
Thanks Bill I was gonna post an offer to buy the old motor. I just re-built mine, I cracked a brush, so I got some brushes from a donor motor at work. Have Dremil will travel!
I'm thinking the Granger fix will be in my future if (when) the need arises. I am surprised at the amount of folks who loose heat in the car when that motor quits. Before I fixed mine it would still run you out with the use of the front 2 fans. It just didn't warm as fast, but still faster than the BMW or Mercedes.
12-10-2005, 09:43 AM
Earlier cars don't have the cabin fans.
We need to stick together on the heater fans. It's one of those things that don't seem to last. I think because of all the heat their subjected to.
12-10-2005, 10:02 AM
Ok stupid question. What did the early cars use to blow air on to the windshield? and what is an early car/It's before 78 right? Just when you think you figure something out...............
12-11-2005, 08:33 AM
The early cars used the engine fan to blow air into the cabin. Do a search on 'backdating heat' or 'heater backdate' and you'll find a ton of info.
12-11-2005, 08:34 AM
Also, look at Rick Lee's post in the following thread to see a pic of backdated heat:
12-11-2005, 09:12 AM
How early are you talking about? My 69 has a blower fan in the front trunk.
12-11-2005, 09:21 AM
Oops, I forgot about the front fan.
The early cars use a combination of the engine fan and the front trunk blower fan.
12-11-2005, 10:48 AM
Maybe I started this confusion.
In the heading of the 1st post he listed 78-83.
Typical confusion. If you put your model and year in your signature it usually helps narrow the discussion as well.
On the SC's I've seen 78-83 the engine heater provides the heat and the freash air blower in the trunk provides the fresh air. It is mixed with the dash controls.
A/C is a completely seperate system with a third blower.
I understand that 84 till? have additional heat blowers in the cabin near your feet.
Earlier than SC's don't have the engine mounted fan (thus Backdate kit). The fan on the motor pushes the air to the cabin. I didn't know there was one up front that sucks it. Thanks Kurt of course I learn something here every day.
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