rear deck grille question
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Safety Car
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rear deck grille question
the grilles on the rear dect right behing the rear window on my 74 goes into nothing, my dads 72 is cut out and lets water drain through, was mine supposed to be cut out, and if so how would i do it? would i need to do "duct work"? i hate the water pooling in there and leaving horrible water marks, seeing as thought i wash it everyother time i drive it, it would be kinda nice to hav a drainage system
Miles
Miles
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Safety Car
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so im wrong in thinking it was for water?
Miles
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Team Owner
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From: Crossville TN
The purpose of those vents was to exhaust normal cockpit airflow. However, the "active" vents (non-A/C units) also had to allow rain, wash water, etc. to be drained...hence the drain lines to the fender wells.
CF JASOC Member
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From: Downtown Annapolis, MD. The Future is where we all have to live. Let's not screw it up.
St. Jude Donor '08-'09-'10-'11
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From: Los Angeles
How do you clear the plenum drains?
I've got a 70' Vert w/no AC. Is it possible to clear the rear plenum drains without removing the gas tank?
I've tried running a clothes hanger down to clear with no success. I think the problem may be that the exit grill is blocked but I can't get to it from underneath because of the gas tank.
This is a demon I've been dealing with since purchasing the car in 1987.
Thanks
James1970
I've tried running a clothes hanger down to clear with no success. I think the problem may be that the exit grill is blocked but I can't get to it from underneath because of the gas tank.
This is a demon I've been dealing with since purchasing the car in 1987.
Thanks
James1970
Team Owner
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From: Crossville TN
The non-A/C vent ports were operated by a vacuum servo; the servo opened AND CLOSED OFF those vents, as required. With the engine off, I believe the vents were closed [can't poke anything in there then]. Start the engine, put control in VENT position and check them to see if they're open.
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From: Lenoir City Tennessee
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St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15
I've got a 70' Vert w/no AC. Is it possible to clear the rear plenum drains without removing the gas tank?
I've tried running a clothes hanger down to clear with no success. I think the problem may be that the exit grill is blocked but I can't get to it from underneath because of the gas tank.
This is a demon I've been dealing with since purchasing the car in 1987.
Thanks
James1970
I've tried running a clothes hanger down to clear with no success. I think the problem may be that the exit grill is blocked but I can't get to it from underneath because of the gas tank.
This is a demon I've been dealing with since purchasing the car in 1987.
Thanks
James1970
Safety Car
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From: AnyTown NJ
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
No such problem with my 71 vert w/air. The area under the deck vents is completely open. Water would fall in an area ahead of the gas tank onto the rear of the tire carrier.
Melting Slicks
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From: Fort Pierce Florida
Drifting
Joined: Jul 2005
Posts: 1,562
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From: Spring Texas
My 71 AC Vert has the flaps to the pass. compartment riveted, but there are wells with drain tubes under the deck vents. the drains run off to the side of the gas tank, not into the fender wells.
Drifting
Joined: May 2005
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From: Lake Arrowhead - Georgia > 72 Base Coupe & 74 BB Roadster
The non-A/C vent ports were operated by a vacuum servo; the servo opened AND CLOSED OFF those vents, as required. With the engine off, I believe the vents were closed [can't poke anything in there then]. Start the engine, put control in VENT position and check them to see if they're open.
True in my 74 convertible. Damn thing still works...amazing...
Race Director
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From: NM
The deck vents should be behind the rear bulkhead for '71 and later convertibles. The vents stayed put but the bulkhead moved forward. They should be in front of the rear bulkhead on a '70 convertible. Coupes had deck vents mounted further forward than convertibles, and all the coupes vents were over the interior storage compartment.
Below is a pic comparing the rear bulkhead (from below) for a '70, on the left,, with a '73, on the right. Both are convertibles with a/c.
As you can see the bulkhead moved forward 4 full inches after 1970. This resulted in '71 and later cars having the deck vents behind the bulkhead while the 68-70 had them in front of the bulkhead. (Also a loss of 4" in storage space for the 71 and later cars.)
Below is a pic comparing the rear bulkhead (from below) for a '70, on the left,, with a '73, on the right. Both are convertibles with a/c.
As you can see the bulkhead moved forward 4 full inches after 1970. This resulted in '71 and later cars having the deck vents behind the bulkhead while the 68-70 had them in front of the bulkhead. (Also a loss of 4" in storage space for the 71 and later cars.)
Racer
Joined: Dec 2004
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From: Los Angeles
Plenum Drains
Eddie 70: Happy I could "spread the joy" with you. Truth be told, anything I know about C3's was learned from those on the forum.
Tom 73: Great photos! Thanks for posting them. If I could only get to those darn drains my problem would be solved. As it is, I can't wash the car with a hose or be caught out in the rain. All because of those blasted drains!!
Thanks again for your input!
Best,
James1970
Tom 73: Great photos! Thanks for posting them. If I could only get to those darn drains my problem would be solved. As it is, I can't wash the car with a hose or be caught out in the rain. All because of those blasted drains!!
Thanks again for your input!
Best,
James1970
