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Can i glue in my own rear window.

SteveSS

SteveSS

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This is on a junky drag race car. No chrome trim. I have the rear window and the channel is hollowed out. Do I need to have it done professionally or can I use Walmart window shield glue?
 
I would find someone that sells the correct urethane and buy a tube of it. A regular caulking gun will work to apply it. With the help of a friend set it in place. You might want to use a couple of shims in the bottom channel so that it doesn't slide all the way down and stays centered in the hole.
 
^^^^^
Easy to do but like mentioned use shims along the bottom. I'd do a test fit for 2 reasons, to find out what shim thickness it'll take and to get a feel for how thick of a bead you'll need to get the window flush.
 
It's not urethane, you need butyl rope or the tape. I used the rope, I didn't think the tape would be thick enough . Either way they will come with the spacers for the bottom. Call your local glass company, they have what you need.
The front glass uses the liquid butyl along with the rubber gasket ..
 
Last edited:
If it’s glass I recommend doing something (reveal molding?) to keep it in. You’ll have one irate track crew if she pops out. It’s 10 million little pieces. I have cleaned one up, when I was done after a couple hours I thought the driver should be drawn and quartered. And, good reminder to leave your windows rolled up until you have ALREADY exited the track.
 
Windows that are not in gaskets were installed with urethane adhesive. No butyl tape kits.
 
69L48Z27 said:
Windows that are not in gaskets were installed with urethane adhesive. No butyl tape kits.
Click to expand...

OE rear window in 68/69/70 and probably others is installed with butyl tape (3/8" for Coronet), not urethane. Front windshield gaskets sealed along bottom and part way up the sides with 3m8509

beerestoration2017 1478.JPG
 
dadsbee said:
OE rear window in 68/69/70 and probably others is installed with butyl tape (3/8" for Coronet), not urethane. Front windshield gaskets sealed along bottom and part way up the sides with 3m8509

View attachment 679387
Click to expand...
Check your 69 Dodge FSM section 23-78. Clearly states adhesive be used. I worked in the auto glass industry for some time, I never found a car that came from the factory with tape kit. Even the Chevy's used Thycol back then to glue windows in.

From FSM:

(10) The adhesive begins to cure immediately upon
exposure to air. The working life is limited to ap
proximately 15 minutes.
(11) Insert adhesive tube into a standard household
caulking gun, install nozzle on end of tube, and puncture
adhesive seal at nozzle.
(12) Apply a smooth continuous 3/8 inch bead of
adhesive on glass
 
69L48Z27 said:
Check your 69 Dodge FSM section 23-78. Clearly states adhesive be used. I worked in the auto glass industry for some time, I never found a car that came from the factory with tape kit. Even the Chevy's used Thycol back then to glue windows in.

From FSM:

(10) The adhesive begins to cure immediately upon
exposure to air. The working life is limited to ap
proximately 15 minutes.
(11) Insert adhesive tube into a standard household
caulking gun, install nozzle on end of tube, and puncture
adhesive seal at nozzle.
(12) Apply a smooth continuous 3/8 inch bead of
adhesive on glass
Click to expand...
Yes but that adhesive is butyl, not urethane. Big difference. I want to say urethane wasn't the standard until the 80's when crash safety took off ...
 
65-440 said:
Yes but that adhesive is butyl, not urethane. Big difference. I want to say urethane wasn't the standard until the 80's when crash safety took off ...
Click to expand...
Maybe, I'm not a chemist. No idea what the chemical content was back then of the adhesive. I agree that whatever it was it does not exist today and was not urethane in 69. Today, the most similar hardening adhesive would be fast set urethane. A butyl tape kit will stay non-cured state and is not the same 'butyl' used to cement windows in the cars from factory. If you want to properly install a back glass today you would not use a tape kit. A tape kit vs. what they used back then is a big difference.

@moparnation74 - how did your glass guy install your back glass?
 
Ok, everyone I know that has used urethane in these old cars has had water leaks. That's because the urethane hardens, butyl does not. Butyl allows the cars body to flex and maintain its water tight seal around the glass. Our old cars flex. New cars are ridgid and urethane works, if you use urethane on an old car it will leak eventually. Unless of course it sits in your garage, I drive my cars, occasionally in rain.... sometimes very hard rain....i like dry feet ! I am not a chemist either but my buddy has been doing automotive glass since the 70's, he knows how things were compared to how they are now. He hates doing old cars because its very time consuming and tedious compared to newer cars. But they must be installed different, no other way around it ..... Unless you like wet feet/ floor boards ...
 
As far as the butyl rope for the rear, I'm sure back then they used the liquid stuff but they also had the proper tools to lay a proper bead of sealant. A specific diameter of rope is just easier to lay on the channel, seals the same ....
 
65-440 said:
As far as the butyl rope for the rear, I'm sure back then they used the liquid stuff but they also had the proper tools to lay a proper bead of sealant. A specific diameter of rope is just easier to lay on the channel, seals the same ....
Click to expand...
I think we can agree to disagree. For the cars we're talking about the front window goes in a gasket, it's not glued in. The front gets sealed and not with urethane. Rear windows get glued in, not tape kit. If you have issues with urethaned windows, front or rear, leaking or seperating it means prep was bad. Windows are a structural part of the car, even these old B Bodies. No special tools required, maybe a quick pump or battery operated caulk gun.

I too earned a paycheck as a professional auto glass installer. You won't find an autoglass shop that will use tape kits.
 
69L48Z27 said:
I think we can agree to disagree.Windows are a structural part of the car, even these old B Bodies.
Click to expand...
No way, the glass pretty much "floated" in the hole. Went along for the ride if you like. Was not a structural part of the body ! Today's cars yes, our old B bodies no
 
All What 65-440 says is correct. Urethane did not exist on these cars back then, and no way is glass a structural component on these cars.
 
i use window weld from 3m from napa it is urethane with a air power chalk gun. this stuff works great
 
Wow. All I can say. Now the windows float?
 
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