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Old 08-01-2017, 01:22 PM
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Firewall / Cowl drainage

I'm working on a 1961 Rambler Classic and I had to repair some rust rot in areas around the vent doors. However, now if I spray water on the windshield it runs in the cowl and into the car around the vent doors. The drain tubes are all clear, so I'm guessing that originally there were some "channels" of sort to deflect the water away from the vent doors and through the drain tubes? I'm thinking the part that rusted away served as a channel/deflector of some sort? The vent door frame is sealed to the firewall so that isn't a problem. I doubt is the vend door seal was meant to be water proof, so I figured there had to be deflectors somewhere in the drain design. Has anyone else dealt with this problem and how did you fix it? Appreciate any insights or pictures of a solution.

Good solid old cars, but they appear to rust from the inside out!


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Old 12-24-2017, 08:56 AM
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Unfortunately I'm not that familiar with the 56-62 big Rambler body, and the factory service manual isn't much help (I have a 61 big car FSM). I would assume it has to be similar to the way the heater opening is made in the 63+ body. There is about a 3/4" high "lip" around the cowl floor opening into the heater box on the later body that prevents water from running down through the heater. This lip usually rusts out due to leaves and trash collecting around it and retaining moisture when the car sits for a while. I would think yours has something similar that does the same thing around the two vent openings, and most likely the heater air intake opening also. The vents are in the kick panels of the 63+ body, air comes from the cowl down the sides into the fenders.
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