i do auto glass for a living, and we leak check it with a garden hose and some one inside watching for leaks. And we get rid of standing water with a wetdry vac.

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Dobek, I am not an expert here, but we were pulling the chrome moulding that runs around the body at the base of the convertible top and in order to get to some screws, we had to drop down a fiberglass "trough" that follows the car exactly like the moulding and is located in the trunk at the top of the back seat. I am pretty sure this trough is to collect water at the back of the convertible top and run it around to the sides of the car where I think it should drain out somehwere by the rear quarter windows. This is on a '67. Does your car have this trough?
Hopefully, someone can give us more info.

 

I've had a couple of ragtops, and as far as I know, that's what the rustholes in the floor are for

 

Dobec I have a 68 ragtop and a trough is locate under the rear window its job is to collect the rain water and direct it down both sides to the floor. Their should be holes to drain this water in the floor ahead of the rear wheels. It was not a very thought out design GM should have run tubes directly from the end of the trough thru the floor to ensure proper drainage and eliminate floor damage. I may do this to my full restoration during reassembly however I dont plan to drive it in the rain sending you a few photos. Garry

 

Here's a story on a related note - many years ago when I was not near as wise as I am now - I was trying to get to a fishing stream up in the Southern California mountains in a 1979 Honda Accord hatchback. I got lost on a dirt road and ended up going downhill over some rough terrain that I couldn't get back up. Since I thought I knew where I was I was sure I was heading back to the main road on a loop. Wrong! At the bottom of the hill was a 100 foot wide river!

Having little choice at this point, I found a guy on the other side with a 4wd and a long rope - he drug my Honda across the river and out the other side. I had to drive into the water upstream - shutting off the motor and climbing out the window. The rope was tied to the frame and coiled on the hood. I grabbed the rope and swam like Jack Lalaine over to the truck. Of course it nearly sunk and did fill up with 2 feet of water! Fortunately, they were drain holes in the floor and I got most of the water out that way and sucked the rest out with a shop vac at home.

The car survived with no apparent damage (I know - Jap scrap would be better off if it had sunk all the way) except that for the next 6 months or so - the windows fogged up on the inside on hot days.


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Scott
'69 400SB, Richmond 5-speed
'99 HD Road King Classic

 

Dobek, there are drain holes forward of the wheel well. They are located on the bottom of a ridge in the floor. The water is chaneled around the back window and down beside the rear seat and into the space where the rear window goes when rolled down. On my 67 convert these were plugged up and the water would sit in the floor and eventually started rusting the door jam. Look around under the car just below the rear door jam and you will find them. I used compressed air to blow a clear chanel for the water to get through.

 

Found the hole - had a cute little rubber flap on it (I guess to keep dirt out - yet flapped open to let water out - I'm sure it worked at least once)

Cleaned best I could - drove car today

Instead of bathtub - I'm now down to puddle

Saw another post about using a shop vac with long thin hose - now just have to find this kinda hose.

What a screwball design - run down the inside of the wheelwell into a space the size of an ashtray - that has no way to get to. Gotta love it -

Thanks all for the help --- anyone with a cool way to clean & keep clean - share it....

Steve