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Blower Fan Rubbing

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Old Jul 25, 2010 | 09:48 AM
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Default Blower Fan Rubbing

Had trouble finding a motor and fan that would fit the hole. All is clean in hole. Fan is shorter than original but aluminum. Could something be pushing the backside?
Thanks Gary
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Old Jul 25, 2010 | 09:54 AM
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Buy the correct fan assembly for your car.
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Old Jul 25, 2010 | 10:06 AM
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Either that or get a C4 fan assy and put in a spacer. C4 fans run faster and move more air
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Old Jul 25, 2010 | 11:36 AM
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Originally Posted by ...Roger...
Buy the correct fan assembly for your car.
Can't find one Rog.
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Old Jul 25, 2010 | 11:37 AM
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Originally Posted by SIXFOOTER
Either that or get a C4 fan assy and put in a spacer. C4 fans run faster and move more air
Couldn't find a spacer either.
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Old Jul 25, 2010 | 03:24 PM
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Originally Posted by 78 C3 Light Corvette Blue
Couldn't find a spacer either.
ya have to make that, I used 2 layers of 1/2" MDF from home depot. Use the fan for a pattern, paint it with black epoxy paint and it will last forever
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Old Jul 25, 2010 | 03:34 PM
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Originally Posted by SIXFOOTER
ya have to make that, I used 2 layers of 1/2" MDF from home depot. Use the fan for a pattern, paint it with black epoxy paint and it will last forever
Didn't you have a thread on that with pictures?
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Old Jul 25, 2010 | 03:45 PM
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I've seen several posts stating that a C3 blower fan housing can be fitted with a C4 fan motor and fan, and all that is needed is a 1" spacer. Is that all that is required? No wiring modifications, or reaming out the housing or other changes? I'm looking to improve air flow in my '72 with air.
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Old Jul 25, 2010 | 04:04 PM
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Making a spacer out of 1" plastic is an option or you can make one form 3/4" plywood and paint it black. You really don't need a 1" spacer, 3/4 will work just fine and keeps the blades extra close to the metal backing inside the blower housing.

To make one from plywood simply sit the blower fan on top a square section of plywood. Trace around the fan and then cut out this circle about 1/4" larger than the trace.

Once you have the fan hole, lay the motor back on top with the fan in the hole and trace the outer edge of the blower fan.

For screws... if you go to your hardware store you can purchase the pole barn metal (sheet metal) screws with the neoprene washers on them in 1" or 1.5". These screws seem to be the perfect size for holding the motor in place plus they offer a seal to the motor when installed.

IMHO

Willcox
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Old Jul 25, 2010 | 04:16 PM
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Originally Posted by dannyman
Didn't you have a thread on that with pictures?
Wasn't mine, but I did it the same way. 2 years ago or something. I might try to find it.
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Old Jul 25, 2010 | 04:18 PM
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I used 3/4 plywood, it kept the clearances tighter.
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Old Jul 25, 2010 | 04:22 PM
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Here is a good one wioth pics
http://www.vettemod.com/forum/showth...ght=fan+spacer
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