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09-07-2019, 04:03 PM
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CC Member
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Join Date: Jan 2011
Cobra Make, Engine:
Posts: 40
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Not Ranked
Cobra Valley Windscreen Install
Removed my old cracked windscreen from the frame and am ready to install the new poly one. Anyone have any tips on the install? Afraid to make a huge mess with the Permatex
Thanks in advance
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09-07-2019, 08:31 PM
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CC Member
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Join Date: Nov 2007
Location: Clayton,
IN
Cobra Make, Engine: ERA 838
Posts: 1,122
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Not Ranked
You should use windshield butyl tape. It is the correct product and makes no mess. Permatex is not the correct stuff.
I think you need 2" wide and the trim away the excess.
John
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09-08-2019, 04:53 PM
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CC Member
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Join Date: Jun 2001
Location: Mesa,
AZ
Cobra Make, Engine: ERA #2119 289FIA
Posts: 5,380
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Not Ranked
The recommended glue that I used was sure nasty. It was as bad as Neverseize for getting a drop on one finger and then it gets to your other elbow. If I ever do it again, I'll use the butyl tape.
Other than the glue, I've very pleased with the polyglass windshield.
__________________
Karlos
"In the Land of the Pigs, The Butcher is King"
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09-09-2019, 12:26 PM
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Registered User
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Join Date: Nov 2006
Location: Metairie,
LA
Cobra Make, Engine: Superformance 2013, Roush 392
Posts: 49
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Not Ranked
Quote:
Originally Posted by Grubby
You should use windshield butyl tape. It is the correct product and makes no mess. Permatex is not the correct stuff.
I think you need 2" wide and the trim away the excess.
John
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What thickness/length 2-inch butyl tape did you use?
Thanks in advance.
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09-09-2019, 02:28 PM
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CC Member
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Join Date: Jun 2001
Location: Mesa,
AZ
Cobra Make, Engine: ERA #2119 289FIA
Posts: 5,380
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Not Ranked
Grubby, I (mistakenly) went with the glue at the recommendation of Cobra Valley, who sold me the windshield...and the glue...
My Bad.
__________________
Karlos
"In the Land of the Pigs, The Butcher is King"
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09-09-2019, 04:49 PM
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CC Member
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Join Date: Nov 2007
Location: Clayton,
IN
Cobra Make, Engine: ERA 838
Posts: 1,122
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Not Ranked
I got the windshield and tape from HanesHotRods
It seems like it was 1/16, but the guys at Hanes can tell you for sure and sell it to you.
The install is very easy.
John
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09-10-2019, 11:07 AM
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CC Member
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Join Date: Jan 2011
Cobra Make, Engine:
Posts: 40
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Not Ranked
Thanks for all the replies
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09-11-2019, 10:58 AM
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CC Member
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Join Date: Jun 1999
Cobra Make, Engine: Three Cobras, one 351W, one 427SO, one 527BB & one GT-40 427R
Posts: 206
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Not Ranked
The Silicone ADHESIVE that comes with the Polyglass is not just a simple silicone 'sealant' or gasket sealer. Using typical windshield Polyurethane or Butyl will not adhere well to this particular windshield's coating. This particular adhesive (made by Permatex) will NOT work well for other plastic or glass windshields either. Just the PolyGlass due to it's special coating.
Cobra windshield frames are not as sturdy without rigid glass supporting them. By gluing the PolyGlass into the frame, makes it into a ‘one piece unit’ that’s much stronger and more sturdy as well as preventing the pull of a soft top from pulling the frame away from the windshield. The recommended adhesive is made to adhere to the special super slippery silicone windshield coating used on this product, where others will not.
Even if you have a center rod support, it would be best to use adhesive to seal the PolyGlass in place, resulting in an overall more rigid windshield & frame assembly reducing deflection or buffeting even if not using a soft top. Just someone heavily leaning on the windshield could bend the frame where otherwise it would break the glass. Making it all 'one piece' makes the entire frame stronger.
While you 'can' omit the adhesive, you benefit from a better overall result using it. These tips and hints are shown on the webpage as well as others...
http://performanceunlimited.com/cobr...indshield.html
Last edited by Randall Thomas; 09-11-2019 at 12:22 PM..
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09-11-2019, 01:45 PM
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Senior Club Cobra Member
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Join Date: May 2007
Location: Mesa,
AZ
Cobra Make, Engine: Contemporary Classic, 428 FE CCX 3069
Posts: 7,506
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Not Ranked
I have a suggestion. When you install the windshield into the frame, replace the brass strips for the wind wing attachments with stainless. I had the windshield installed, then the brass stripped out, now I am installing helicoils to hold the wind wings in place.
__________________
Dan in Arizona
CCX3209
"It's a great car and I love it, but it doesn't do 'SLOW' very well."
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