69 vert cowl vent question

[dzahm 10]

Crazy ques- how many cowl vents does a 69 vert have? I been looking at threads and I thought there are 2 but I can only find 1 (pass side) Is it hidden or did this change/ (or am I totally lost and they all have just 1)

[70mstang 11]

should be just one on the passenger side.

[dzahm 10]

Thanks- was looking for the source of my driver floor rust- clearly its not the cowl vent. (pass pan is MINT) so wheres the next most likely source? Winshield trim is off and windsheild looks well sealed. The car is otherwise rust free. kinda stumped- but I haven't tried the water hose trick

[RogerC 136]

There's a vent on the driver's side kick panel and one on the passenger side kick panel. Then there's an inlet to the heater on the passenger side above the heater box which tends to rot and leak.

[maxum96 32]

Thanks- was looking for the source of my driver floor rust- clearly its not the cowl vent. (pass pan is MINT) so wheres the next most likely source? Winshield trim is off and windsheild looks well sealed. The car is otherwise rust free. kinda stumped- but I haven't tried the water hose trick

 

Either leaking windshield seal leaking or years of wet or snow covered shoes, especially if the car was in snow country. I believe snow covered shoes where the snow melted into the carpet is why my floorpan rusted out at the base of the firewall.

[70mstang 11]

If the fenders aren't off yet, pull off the drivers side and see if there is rust below where the windshield dumps all of the water. Mine had some cancer in that area.

 

Also in some cases I've seen windshields that looked fine but there was water that seeped in somewhere along the line and rusted behind the glass itself leaving holes. Finding this would be difficult without removing the glass, which is hard to do without cracking it.

 

As Always ..pics =)

[Cruzzar 22]

My '70 had rust on the driver's side about under the driver's heel but none on the pass. side. I found out that the area under the windshield wiper motor does not drain water well and it rusted some pin holes in that area that allowed water to drop onto the rug and rust out some of the floor pan. You will need to either try to look up under the dash just to the right of the steering column (almost impossible to do unless you are about two foot tall) or pull the cowel, pull the wiper motor (only three bolts and a clip on the mechanism and see if it is rusted in that area. Good luck.

[Fordrevhead 29]

I found some pin holes in my 70 coupe in the same spot as Cruzzar. Wet leaves get stuck under the wiper motor I imagine. There's a bracket spot welded from the bottom side and mine rusted a little hole near that as well. I took the entire wiper motor and transmission out, dash out , put a lead light in the cowl and shut the lights off in the shop. Get in the car and you will see all the pin holes.

 

Then of course you just pull the windshield, rotate the car upside down on the rotisserie, stand through the windshield and weld them from under the dash while standing right side up. :001_huh: I wish someone else was in the shop that day, it would have made a wild looking photo.

[dzahm 10]

Yep, only one- I thought someone had cut/rewelded mine but thankflly only one and its in good shape. So my water leak is elsewhere- maybe windsheild. Will post pics of the car soon. (when I figure out how to resize) David

[Pakrat 1,043]

Just becasue you don't have a vent on the driver side doesn't mean that the cowl isn't leaking there, it's still a very likely culprit simply because of the design. Even without years of debris and leaves and stuff the tiny drain holes that run off behind the front tires quite often got covered up at the factory with seam sealer and let water sit there from day one. Before digging into the windshield I would still dump a bucket of water in there and make sure it is draining properly and not onto the floor.

[dzahm 10]

Thats next on the list- I just epoxy primed the rear qtrs, and trunk area. Now to the cowl area- I wanna run down the leak- from what I can see the cowl looks mint- drain holes are nice- but the drivers pan was GONE. Oddly except for the battery tray there was NO other rust- I'll post what I find for leaks