65 Coupe Windshield Re-install

[Bryan M.]

Hello,
I'm getting ready to have my coupe's windshield pulled out and re-installed. It has a leak due to what I believe to be a bad installation. I finally found someone who knows how to do it.
I want to get everything necessary to make the job as smooth as possible for the installers.
What parts do I need to order?
Thanks,
Bryan

[Bryan M.]

Re: 65 Coupe Windshield Re-install

Well,
I took a stab at it myself. I'm going to order:
1 - Coupe Windshield Rubber weatherstrip Seal
1 - set of Coupe Molding Clips
1 - set of Coupe Molding Clip Screws

Did I miss anything?

[Steve L.]

Re: 65 Coupe Windshield Re-install

Well,
I took a stab at it myself. I'm going to order:
1 - Coupe Windshield Rubber weatherstrip Seal

Bryan,

ttt

I've posted this type of question before, asking for specific part numbers/manufacturers, but never received details for some reason.

About the best I've gotten is to use urathene instead of butyl, but never scources for materials,other than use a Totyota dam.

I'm not sure why that is. I'm sure many members of this forum have installed W/S. Maybe it's just the case of everyone thinking someone else is going to answer.

[Bryan M.]

Re: 65 Coupe Windshield Re-install

Bryan,

ttt

I've posted this type of question before, asking for specific part numbers/manufacturers, but never received details for some reason.

About the best I've gotten is to use urathene instead of butyl, but never scources for materials,other than use a Totyota dam.

I'm not sure why that is. I'm sure many members of this forum have installed W/S. Maybe it's just the case of everyone thinking someone else is going to answer.

Steve,
Thanks for sending it back to the top. I posted hoping someone would offer up their experience on the subject matter. If not, that's OK too.

[Scott S.]

Re: 65 Coupe Windshield Re-install

Well,
I took a stab at it myself. I'm going to order:
1 - Coupe Windshield Rubber weatherstrip Seal
1 - set of Coupe Molding Clips
1 - set of Coupe Molding Clip Screws

Did I miss anything?

Hi Bryan,

I haven't gotten to this point in the restoration yet, but I have done some research. In a post from early 2008, John Hinckley mentioned that the molding retainer clips from Paragon work best.


From my notes:

Windshield reveal retainer kit (exterior) $46 at Paragon with NCRS discount
(Paragon # 11044K-25) (GM P/N: 3843939) (23 clips and 2 corner clips)

Windshield reveal retainer kit (interior) $16 at Paragon with NCRS discount
(Paragon # 1535K) (GM P/N: 3825990) (set of 4, clips to fiberglass dash panel)

Windshield molding clip screw kit $9 at Paragon with NCRS discount
(Paragon # 119K-11) (GM P/N 4825964)


It seems that many people like the weatherstrip made by "Corvette Rubber Company". Many of the vendors are re-sellers of CRC weatherstripping, but I would ask to be sure.


Link to Paragon "Coupe Windshield Assembly" schematic:
https://www.paragoncorvette.com/c-23...ield-assy.aspx

[Scott S.]

Re: 65 Coupe Windshield Re-install

Steve,
Thanks for sending it back to the top. I posted hoping someone would offer up their experience on the subject matter. If not, that's OK too.

Some subjects are like that, I haven't figured out a rhyme or reason to it yet. I started a Thread about the windshield and rear window retaining clips a while back: https://www.forums.ncrs.org/showthre...lding&uid=8151

[Stewart L.]

Re: 65 Coupe Windshield Re-install

Bryan, I will take a shot at giving you some tips that have worked for me. First thing, take a sharp knife or razor and slice the old weatherstrip at the edge of the glass and pull it out so you have acess to the clips. The weather strip will tilt the moulding and bind the clips so I prefer to get it out first. After everything is out and cleaned up, I like to pre fit the moulding and straighten it if necessary. The AIM has instructions on relocating the clip location if necessary. I then mark the clip locations with blue tape so I know exactly to put the pressure when snapping the moulding back in place. When reinstalling, I like to put either the lower or upper moulding in first and slide the windshield in because the moulding can be hard to get to snap into place. The repo weatherstrips seem to be a bit thicker than the OEM ones so they will tend to tilt the moulding and make them difficult to snap in. Use window bedding compound, not urethane. The service manual gives sealing instructions, basically seal around the outside of the weatherstrip. Long Island and Paragon both sell clips that appear to be very close to OEM.Hopefully that helps, good luck with it. Your parts list looks good, get the bedding compound at an auto body supply store.

[Bryan M.]

Re: 65 Coupe Windshield Re-install

Excellent guys! Thank you very much! I have been wondering what parts supplier to use that would give me the best results. Thanks for the list Scott.

Stewart, the glass installers told me they use urethane to set the windshield. The only experience I have with Corvette windshield installation is observing the guys who installed a new windshield on my 68 convertible. The installers ran a bead of urethane around the windshield frame channel and the set the glass in place to the right depth. In this case, it appears that the urethane is what makes the seal and holds the glass in place.

The service manual makes reference to two types of compounds. 3M-1170 which I'm assuming is the bedding compound and the 3M-6699B that is used to seal between the weatherstripping and the glass.
What did you use to seal the weatherstrip?
Also, what actually makes the seal? The bedding compound or the rubber gasket with sealant applied?

[Wayne W.]

Re: 65 Coupe Windshield Re-install

The factory used a non setting, very sticky, bedding compound in the channel. And a small bead in the glass channel. That is what makes the seal. I have never found an exact substitute, but have used 3M bedding with good result. I wouldnt use urethane, because it will set and be very hard to clean if you ever need to remove the windshield again. Plus if it gets into the clips the window trim might become permanent.

[Steve L.]

Re: 65 Coupe Windshield Re-install

The factory used a non setting, very sticky, bedding compound in the channel. And a small bead in the glass channel. That is what makes the seal. I have never found an exact substitute, but have used 3M bedding with good result. I wouldnt use urethane, because it will set and be very hard to clean if you ever need to remove the windshield again. Plus if it gets into the clips the window trim might become permanent.

If you go through the postings, Urethane is suggested because of safety issues.

Also, almost everyone says they use this adhesive or that adhesive but they never give part numbers.

[Stewart L.]

Re: 65 Coupe Windshield Re-install

The windshields were rubber set until 1968 when they started to urethane set them. Do not use urethane, you will never get it cleaned up and it will bond the clips in. Personally, I don't use any sealer if the car is a show car because it makes a mess and I never drive them in the rain anyway. If the dash is in, make sure you cover it with some plastic. Whatever you do, do not bend the mouldings taking them off and make sure you get the tabs on the upper corner mlds bent to the proper angle during the moulding pre fit before windshield installation.

[John H.]

Re: 65 Coupe Windshield Re-install

If you go through the postings, Urethane is suggested because of safety issues.

Also, almost everyone says they use this adhesive or that adhesive but they never give part numbers.

Steve -

DO NOT USE URETHANE - that's only used for adhesively-set glass, like the '64-'67 back window and '68-up windshields. The midyear windshield is retained by the rubber channel, period.

There are no adhesives involved in a midyear windshield installation - only gooey sealer like the 3M Automotive Bedding & Glazing compound. If your installer says he's going to use urethane, find another installer - he's thinking of '68-up windshields.

[Wayne W.]

Re: 65 Coupe Windshield Re-install

Also, almost everyone says they use this adhesive or that adhesive but they never give part numbers.

IF you google 3M bedding compound, you can find the stuff.

[Bryan M.]

Re: 65 Coupe Windshield Re-install

Excellent! Excellent! Excellent! Thanks for the information. This is what I need to have an informed conversation with the installers.

I also found the Bedding compound http://www.3m.com/product/informatio...-Compound.html

[Dick W.]

Re: 65 Coupe Windshield Re-install

John and Wayne offered you excellent advise. NEVER, EVER, use urethane is a rubber gasketed windshield installation. You will end up with one hugh mess. I have had the "pleasure" or removing a couple of them on cars we were tearing down for restoration.