Door jamb query, What is that hole for? Options

[TonyH]

Good afternoon everyone,

I question if I may. I have just been watching Ian Karr's new video on Youtube on his 914/6 project and it reminded me to ask you good people a question.

Just above the door lock in the door jamb there is a hole/tube, what is that for? It appears to go up into the sail but not into the engine bay.

I have just had a look at my car, shined a torch into the entry hole but there is no light to be seen.

Enjoy your Sunday afternoon. - Tony

[Rob-O]

It’s a little more involved than just letting air out of the cabin. It’s really to equalize the pressure between the cabin and outside the cabin. When you close the door to an well-sealed automobile (and all other windows are closed) you actually produce an sizable amount of pressure inside the vehicle, which can pop windows out of their tracks and cause all kinds of other issues. Automakers have combated this with some type of mechanism to equalize the pressure. Nowadays they usually have a small plastic panel located somewhere behind the left or right side of the read fascia that has a one way seal. When you close the door the pressure gets pushed through this seal, which closes when the pressure equalizes. Some manufacturers (including Porsche) have resorted to a method where when you open the door to your car the driver or passenger window opens slightly (inch or so) and then stays open until you close the door. Once you close the door the open window has allowed the pressure to equalize and the window rolls back up that one inch.