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E-Bodies Cuda & Challenger (sponsor: ROSEVILLE MOPARTS) => Cuda & Challenger General Discussion (ROSEVILLE MOPARTS) => Topic started by: fireguyfire on May 13, 2020, 06:43:54 PM

Title: Windshield install
Post by: fireguyfire on May 13, 2020, 06:43:54 PM
I just removed the windshield on my 73 challenger so that I can install a vinyl top.
Searching the internet, and the shop manual a lot of people recommend still using 3/8" thick butyl tape to install the windshield.
Glass shops I have been talking with think that's nuts and strongly recommend urethane to install.
I am also having a tough time sourcing the butyl tape, so I thought I would throw the subject up for discussion here; are you guys and gals using urethane or butyl tape, and also any windshield installation tips would be appreciated; it's been several years since I've done one.
Title: Re: Windshield install
Post by: GoodysGotaCuda on May 13, 2020, 07:49:51 PM
I used the thick butyl to help ensure that the trim fits reasonably against the glass.

If the factory had a 3/8" butyl for a nice fit, going to a 1/4" or so of urethane will seal just fine, but your gap will be way off.


I found my front/rear glass seals on eBay.
Title: Re: Windshield install
Post by: RUNCHARGER on May 13, 2020, 07:57:14 PM
I used butyl as well.
Title: Re: Windshield install
Post by: mopar jack on May 13, 2020, 08:04:32 PM
Our cars use glass that is not designed for urethane. Urethane does not stick well to glass so modern glass has an enamel fused to it and the urethane bonds to that. https://jalopnik.com/heres-what-those-little-dots-are-on-the-edges-of-your-c-1791075995
Title: Re: Windshield install
Post by: anlauto on May 13, 2020, 08:11:45 PM
My guy has been in the business for probably close to 40 years....He uses butyl on all my cars, because I ask him to, but he would be the first to say the urethane is much stronger...I bet MOST glass shop these days, the guys there likely don't even know what butyl is  :no:
Title: Re: Windshield install
Post by: fireguyfire on May 13, 2020, 08:23:00 PM
My windshield actually looks really new; definitely not the original one.
I've owned the car for a year, so it could be very new
Title: Re: Windshield install
Post by: mopar jack on May 13, 2020, 09:24:40 PM
It may be new but it is not going to have the frit. Hope you read the article I posted.
Title: Re: Windshield install
Post by: headejm on May 13, 2020, 09:25:06 PM
We just discussed this.

https://forum.e-bodies.org/body-shop/5/install-windshield/16220/msg214239#msg214239
Title: Re: Windshield install
Post by: Mrbill426 on May 13, 2020, 11:37:40 PM
NAPA sells butyl tape in 1/4" through 3/8".



Quote from: fireguyfire on May 13, 2020, 06:43:54 PM
I just removed the windshield on my 73 challenger so that I can install a vinyl top.
Searching the internet, and the shop manual a lot of people recommend still using 3/8" thick butyl tape to install the windshield.
Glass shops I have been talking with think that's nuts and strongly recommend urethane to install.
I am also having a tough time sourcing the butyl tape, so I thought I would throw the subject up for discussion here; are you guys and gals using urethane or butyl tape, and also any windshield installation tips would be appreciated; it's been several years since I've done one.
Title: Re: Windshield install
Post by: JS29 on May 14, 2020, 06:11:04 AM
 :iagree: Butyl tape is not that hard to find, the problem is the counter help wasn't born yet when they quit using it. Modern glass installed with urethane is considered structural now.  :alan2cents: