Re: Factory A/C Questions

Posted by HH56 On 2017/5/25 18:51:44

IIRC, the adapter tube is flush with the bottom side of fender and the ring is on top of the fender to provide a bit of height so rain water is a little less likely to drop down in the adapter. The ring kind of lets water run around the tube opening and out a small notch in the back of the vent and gasket. The diameter of the adapter fits the ID of the flex duct connecting to the AC return air plenum. I don't remember the size but think it is around 2".

The actual working part of the Packard vent is the first 3 or 4 inches. There is a partition inside that blocks off the rest so the overall Packard size is mostly for aesthetics and the styling look of the vent. If you compare the Packard vent to the Cadillac or Imperial, IMO, those look short and stubby on the fender and not well integrated. The Chrysler is not too bad but is more on the side of the fender rather than the top.

I don't have a dimension where the adapter was to be placed on the fender but here is a photo showing the vent location. You might be able to scale it out. The photo of the wax casting is of the vent I made when Kev loaned one of his to make a mold. As I recall the tube location inside the vent is about as drawn. A screen fits in the groove at the front. The other photo is of various vents. All had a similar tube adapter and duct arrangement mounted into the fender.

Edit: Added a better view of the front to back location of the vent on the fender.

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