Classic Mustangs (Tech)Technical discussions about the Mustangs of yester-year.
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I did the water test today and got the same results for both sides. The water went straight through the drain hole and down onto the ground...which is exactly what it's suppose to do, right? I may have cleaned it out a bit last year when i restored the front engine bay, so i'm assuming when it was clogged for 40+ years it rusted the floor some.
My normal UPS driver was in the neighborhood today and he stopped by to see the progress. He said my cowl vents actually don't look that bad and a wire brush followed by some rust treatment will do. He also said I'm 1 step away (removing window and wiper) from having everything clear to replace the cowl and not worry about it ever again. Guess i'm at the crossroads in this case?
It could have been one of the glass gaskets leaking that let water in the car that rusted out the floor pan.The cowl is the first thing that gets blamed but there is other ways like the leather gaskets on the wiper arm shaft holes that rotted away 20 years ago.
You'll have to decide what to do about this at this point. You do not want to have an issue with the cowl leaking after the car is back together and finished. As you said, now it's not leaky, but be sure you're not one rainy season away from the cowl letting loose.
If it was me i would cut the corners off the cowl por15 the whole inside and weld it back on.If you are going to use a aftermarket heat and air some don't use the cowl so you could shave the cowl vent off it.
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