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Difference between Convertible and Coupe Door

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Old Nov 10, 2022 | 06:58 PM
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Default Difference between Convertible and Coupe Door

Hi all,

What exactly is the difference between a convertible door and a coupe door, and are they interchangeable without modification? I have watched the following video for a 73 convertible, but it looks different than my door on my '69 convertible. One of my doors has some damage and my paint guy recommended it would be better to replace than try to repair (and likely cheaper).


Can someone please help here, as I am looking to replace my door, but all the doors I'm seeing are from coupes. Pics would be of great value too.

Thanks everyone!
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Old Nov 10, 2022 | 11:03 PM
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What is wrong with your existing door?
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Old Nov 11, 2022 | 12:05 AM
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Originally Posted by 69L88
What is wrong with your existing door?
The previous owner tried to fix some damage from god knows what. The bottom of the door is warped - bad repair work.
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Old Nov 11, 2022 | 07:32 AM
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I used a later coupe door on my 70 convertible because of rust and I had to modify it.




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Old Nov 11, 2022 | 08:11 AM
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Originally Posted by Corvette-ZL1
The previous owner tried to fix some damage from god knows what. The bottom of the door is warped - bad repair work.
If the door opens and closes fine it may well be worth repairing. Sounds like the issue is the steel structure is bent. I’ve straightened a few over the years so you may want to consider that option as obtaining a replacement door will involve the cost of shipping, plus all of the associated work in removing and/or replacing the window/related hardware, remove/replace the weatherstripping, stripping the paint, repainting the jambs, repairing hidden damage, potential modifications if you get a later door, etc, etc, etc.

Sometimes better to deal with the devil you know than the devil you don’t.
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Old Nov 11, 2022 | 10:41 AM
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Originally Posted by 69L88
If the door opens and closes fine it may well be worth repairing. Sounds like the issue is the steel structure is bent. I’ve straightened a few over the years so you may want to consider that option as obtaining a replacement door will involve the cost of shipping, plus all of the associated work in removing and/or replacing the window/related hardware, remove/replace the weatherstripping, stripping the paint, repainting the jambs, repairing hidden damage, potential modifications if you get a later door, etc, etc, etc.

Sometimes better to deal with the devil you know than the devil you don’t.

This
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Old Nov 11, 2022 | 06:16 PM
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Originally Posted by laz749
I used a later coupe door on my 70 convertible because of rust and I had to modify it.




Yeah, this work is consistent with the youtube video I shared in my initial post. My doors don't look like that. I'll take pictures tomorrow when I'm at the shop and post them.
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Old Nov 11, 2022 | 06:17 PM
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Originally Posted by 69L88
If the door opens and closes fine it may well be worth repairing. Sounds like the issue is the steel structure is bent. I’ve straightened a few over the years so you may want to consider that option as obtaining a replacement door will involve the cost of shipping, plus all of the associated work in removing and/or replacing the window/related hardware, remove/replace the weatherstripping, stripping the paint, repainting the jambs, repairing hidden damage, potential modifications if you get a later door, etc, etc, etc.

Sometimes better to deal with the devil you know than the devil you don’t.
I wholeheartedly agree. I'll talk to my body/paint guy more about this. Plus all the original stickers are in the door jam. I really don't want to replace the door.

It does appear that the steel structure of the door was damaged - not by rust, but some sort of impact. I do not quite understand how something like that could happen and not do damage to surrounding components, like the original frame/chassis (which I recently replaced), which show no signs of damage whatsoever, aside from the usual rust....

Last edited by Corvette-ZL1; Nov 11, 2022 at 06:24 PM.
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Old Nov 11, 2022 | 06:25 PM
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A convertible door has the recessed area to which the chrome door alignment pin bolts. Coupe doors do not.
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Old Nov 12, 2022 | 12:00 AM
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Originally Posted by Corvette-ZL1
I wholeheartedly agree. I'll talk to my body/paint guy more about this. Plus all the original stickers are in the door jam. I really don't want to replace the door.

It does appear that the steel structure of the door was damaged - not by rust, but some sort of impact. I do not quite understand how something like that could happen and not do damage to surrounding components, like the original frame/chassis (which I recently replaced), which show no signs of damage whatsoever, aside from the usual rust....
Something as simple as someone backing out of a parking spot and puts their bumper right in the lower middle of the door. Start by pulling the interior panel and get a better idea of what has been tweaked.
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Old Nov 12, 2022 | 12:54 PM
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Originally Posted by 69L88
Something as simple as someone backing out of a parking spot and puts their bumper right in the lower middle of the door. Start by pulling the interior panel and get a better idea of what has been tweaked.
Sounds about right!
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Old Nov 13, 2022 | 11:26 AM
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Originally Posted by 62corvette
A convertible door has the recessed area to which the chrome door alignment pin bolts. Coupe doors do not.
The early C3 convertibles did not have this alignment pin bolt. My 68 does not have them. Don't know when they first appeared. 69? 70? I assume this pin can be removed easily? Otherwise I believe the doors are the same. The window glass is not interchangeable.
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Old Nov 14, 2022 | 10:11 AM
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Originally Posted by 68/70Vette
The early C3 convertibles did not have this alignment pin bolt. My 68 does not have them. Don't know when they first appeared. 69? 70? I assume this pin can be removed easily? Otherwise I believe the doors are the same. The window glass is not interchangeable.
That's what I've found as well, which is why I was confused. Attached is a pic of my door. So seems as though it should be easy to interchange the convertible and coupe doors - at least for 68 and 69.




Also, here is why I'm contemplating replacing the door (below).... Door opens and closes fine. I would prefer to not replace it, but this is what I'm dealing with. When you look at the door from the outside when it is closed, you can actually see where it is warped outward toward the bottom of the door. I didn't take pictures of that, but that's what it does. Absolutely abysmal bodywork by the previous owner.




Last edited by Corvette-ZL1; Nov 14, 2022 at 01:53 PM.
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Old Nov 14, 2022 | 01:50 PM
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Sometimes better to deal with the devil you know than the devil you don’t.[/QUOTE


Well said, IMHO the best answer.
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Old Nov 14, 2022 | 01:58 PM
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Originally Posted by 69L88
Something as simple as someone backing out of a parking spot and puts their bumper right in the lower middle of the door. Start by pulling the interior panel and get a better idea of what has been tweaked.
That's next on the list after bolting the body to the frame. I agree that that is the only way to truly assess the extent of the damage.
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