1968 Plymouth GTX

I guess I am pretty late but when we do stuff like this we like to set the glass in with some rubber blocks and also mock up the reveal moldings to make sure there won't be any nasty surprises upon reassembly.
No, you are not too late. I will indeed need to do this as I have to replace the retaining studs and molding clips.
 
If you have access to the shop manual it might give some dimensions for blocks to set the window in, and check the fit.
Such as this example.

ae9f368a-48ed-456b-8148-38ef74262ca2_zpslisw5orj.jpg
I have the Factory Service Manual so I will check that out. Thanks.
 
I would tac weld the corners in and do what crash suggested. The corners may also fix the gap issue with the new upper trunk panel.

I feel for ya having to work on your back in the trunk to drill out those spot welds, not fun.
 
Actually I was able to get everything done from above. After drilling out the visible spot welds, I used a cut off disc along the end seams and the back window edge being careful not to hit the metal I wanted to keep.

Once the panel was removed, I used a sharpened air chisel to separate the left over panel edges from the body. Then ran a grinding disc over the now visible welds to flatten them.
 
After some measuring I found one of the bottom tabs that help align and hold things in place was 1/8" too long. Trimmed it to the correct length and then test fit the panel again.
Test Fit Left Side 1.JPG


Test Fit Right Side 1.JPG


Much closer now so I'll wait until the new window corners are in before messing doing any more adjusting.

Speaking of the lower window corners, the brazing was extensive and fearing trouble MIG welding in those areas, I thought it best to get rid of it. This left me with some serious patching to do as can be see in the previous picture.

Lower Right Window Corner Test Fit.JPG


Also notice how the patch has a more rounded edge than the original quarter panel. The other thing is the height of the patch in the lowest rounded portion sits an 1/8" below the surrounding metal.
Did I mention how much fun this is turning into?
 
Good find on that tab being an 1/8 too long. The gap is looking much better. I'm also glad I'm not the only one from time to time who thinks, " what have I gotten myself into" :p
 
[rant] I have tried to explain to people, for example, that if they made a perfect copy OE factory rocker for 67-72 Chevy pickups, it would be worth at least 400 bucks, even though you can buy crappy knockoffs all day for $20. Same goes for just about every part they sell for our old iron, it's all overseas and 99% of it belongs in the recycling bin. But, most people just look at me like I have 3 heads because they saw how easy it was on TV. [/rant]
 
Well after a repeated struggle to get these inside corners to fit, I think I discovered the problem.
In this picture you can see the height difference even after I added some 18 ga. metal to help raise the patch up.
Window Corner Height difference after adding 18 ga. under.JPG


I couldn't understand how all the other parts I have purchased and installed from AMD fit and these didn't. So I did a search and saw some photos which turned the light on.

It turns out that I ordered the "inside" corners which I now believe are there to support the "outside" corners that I did not order.

Today I sent an email to AMD to try and get some questions answered and hopefully will get a reply tomorrow, that is unless they celebrate Juneteenth :rolleyes:.

In the meantime I will media blast the rust out of there and get everything coated in epoxy.
 
Thanks for the update. The information you are providing here could really help someone else out who comes across having to do what your doing.

Thanks for sharing.
 
AMD got back to me this morning. My assumption was right, there are inner and outer patches that work together to provide complete replacement of the rusted out corners.

I will order the outer corners today.

By the way, they did say I could return the inner corners if I wanted to. However, since I had to remove so much brazing and rusted through metal, I need to install them anyway.
 
While waiting for my compressor parts to get here, I decided to work for a better fit on the rear deck panel.
From the start it was that right front corner that has been giving me fits. Today I discovered why.
This is the left front corner with a straight edge up against the end.
Deck Panel Corner Shape.JPG


Here's the right front corner:
Deck Panel Corner Flaw.jpg


No recess cut at all.

I will get the tin snips out and duplicate the cut away. This should alleviate the pressure and let the panel fall into place.
 
Good find. When I have an issue with something, I'll do something else and return to the issue with a clearer mind, which usually yields good results.
 
Well it's been a battle with the lower window corners.

First, I thought I needed the inner and outer corner patches so I installed the inner patches only to have to remove them.

It turns out that the inner corners are just the inner portion of the outer corner patches as can be seen here:
Inside and Outside Lower Right Corner.jpg


I decided to attack the left lower corner first (sorry, no rounded corners):
Left Outer Corner cut out.jpg


The patch has multiple angles and bevels to it and need to be shaped to provide a finished area to match the rear deck panel.
Left Corner Patch Fit.jpg


I have a gas MIG welder and this thinner metal always gives me fits. Using a .023" wire I can get some tacks near perfect while others have pits in them.
Left Corner Tacked into place.jpg


I work slowly and yet can never seem to get a perfect finished weld. No problems with the thicker gauge metals but this stuff?

Of course I forgot to take the picture before covering the weld in paint for the night. However you can see the tiny little holes in the welded area.
Lower Left Patch covered in primer.JPG


My plan is to strip the paint back off and try to fill those spots with weld. The problem will be blowing through the thin metal.
Any suggestions on how to improve my results would be appreciated.
 
Making progress, looks good. I used to have that pin hole issue. I found that if my gun and wire was not angled, say 10 or 15 degrees to the work piece, I got those pin holes.
 
Well it's been a battle with the lower window corners.

First, I thought I needed the inner and outer corner patches so I installed the inner patches only to have to remove them.

It turns out that the inner corners are just the inner portion of the outer corner patches as can be seen here:
View attachment 21430

I decided to attack the left lower corner first (sorry, no rounded corners):
View attachment 21431

The patch has multiple angles and bevels to it and need to be shaped to provide a finished area to match the rear deck panel.
View attachment 21432

I have a gas MIG welder and this thinner metal always gives me fits. Using a .023" wire I can get some tacks near perfect while others have pits in them.
View attachment 21433

I work slowly and yet can never seem to get a perfect finished weld. No problems with the thicker gauge metals but this stuff?

Of course I forgot to take the picture before covering the weld in paint for the night. However you can see the tiny little holes in the welded area.
View attachment 21434

My plan is to strip the paint back off and try to fill those spots with weld. The problem will be blowing through the thin metal.
Any suggestions on how to improve my results would be appreciated.
can you get any kind of backer in that area?
 
There is a Youtube video where MP&C made a guest appearance on another YouTube channel. A man was trying to teach his son how to weld floor pans. After MP&C reset the polarity on the welder, lol, he went into detailed information on how to set a welder up for stitch welds.

The most important key note I picked up was, a lot of people set there amps and wire speed up when their material has a backer, or the material is on a metal work bench. If you're welding on an area where you can't use a backer, you need to set the welder up for open air welding.

As was shown in the video, I butt two pieces of sheet metal in a vice and make vertical spot welds in the open air. This is how I set my amps and wire speed. I'm now able to lay down a flat weld 1/16" or less in height without burning holes in the sheet metal. Another important tip for consistency is how far away you are from the work piece. The closer you are makes a cooler weld, farther away produces a hotter weld.

I have that video saved on my home computer. I'll post it tonight if anyone is interested.
 
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