First Generation Firebird-L Mailing List
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3M makes the ribbon installation kit in different thicknesses.  Depending on 
the thickness of your replacement glass, you may need 3/8" or 5/16".  
Replacement glass came in different thicknesses, and a replacement glass may be 
thinner than orignal glass you removed.    If you have the wrong kit for your 
glass, the chrome will sit too low or too high compared with the 
sheetmetal. The chrome does not look good nearly flush to the body.  
 
Alternatively you can use a urethane setting kit.  With those, you adjust 
the glass on rubber supports that set the spacing with a perimeter dam.  You 
can trial fit the chrome and adjust the glass spacing before applying the 
urethane.  Once trial fit is okay, you apply the urethane around 
the perimeter.  
 
Some folks argue the urethane is better.  The original installation was done 
with a two part sealeant made by Thiokol, so the "rope kit" is not identical to 
the OEM.  Windshield leaks are typically from a rust failure not a problem 
with the sealant product.  Molding clips scratch the paint, causing rust to 
start.  The rust creeps underneath the paint, causing a paint failure.  Also, 
there was sometimes problems with paint coverage behind the molding pins, 
leaving bare metal.    
 
The urethane kit requires the dual cartrdige applicator gun (automix gun).  
Many body shop supply stores will lend you one.  I bought one on ebay for 
around $120. 
 
Info on the 3M urethane adhesive is on the 3M website
 
http://solutions.3m.com/wps/portal/3M/en_US/3MAutomotive/Aftermarket/Products/Product-Catalog/?PC_7_RJH9U5230GE3E02LECFTDQCEK3_nid=GSQHNXZ57BbeQDJBBV196Cgl
 
 
 
Larry
  

--- On Sun, 1/25/09, S Sterchi <[email protected]> wrote:

From: S Sterchi <[email protected]>
Subject: [FGF] Windshield Install
To: [email protected]
Date: Sunday, January 25, 2009, 12:54 PM

First Generation Firebird-L Mailing List
.........................................................................

I wanted the 3M Weld Ribbon but they were out of stock so I bought CI's
3/8" installation tape. I recall a thread regarding trim fitment problems
due to the window sitting too low or too high, etc. Any advice on this before I
set the glass?
 
THanks,
Sheen
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