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Old 08-30-2011, 12:25 PM
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defroster vents in a 1939 ford

It looks like my ford came with defroster vents in the lower part of my window, IF so does any know if they work . Iam adding a new A/C system into the car, but Iam not sure if the defroster vents go into this part of the car, would be the best place to put them. Thanks for any and all help Tom

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Old 08-30-2011, 12:42 PM
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Let's move this to General Rodding Tech.


No one lives forever, the trick is creating something that will.
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Old 08-30-2011, 12:55 PM
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On my Ford ... I used the vents in the top of the case to connect to the vents. The two at the rear closest to the firewall.

Bob Drake sells a kit to hook all this up and make it work.

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Old 08-30-2011, 08:42 PM
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I once used a vacuum cleaner crevice tool to make a defroster. I cut it to the length of my defroster louver in the dash, blocked the end by gluing on a piece of the cutoff, made a saw cut in the top side to allow the air to blow into the defroster louver, pop riveted a adjustable hose clamp to the dash support and connected the round end to a piece of 1 1/4" defroster duct that went to the top of the heater. My wife still hasn't missed it to this day (the crevice tool, that is).

Now a days, I'm more sophisticated, I use a rear defogger vent from a 70 -72 Chevelle, Buick or Olds. Sometimes the whole unit if its all there. Just need to get some air over the windshield to take off the fog in the morning.
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