 Windshield install with butyl - is butyl primer needed? |
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| Kansas 914 |
 Jun 23 2017, 07:41 AM
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#1
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Advanced Member  Group: Members Posts: 3,006 Joined: 1-March 03 From: Durango, Colorado Member No.: 373 Region Association: Rocky Mountains 
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I have brand new paint on the car. I remember the last time I had a windshield installed by I don't think the installer used primer.
Is it best to prime the frame first and is butyl primer the right stuff? Like this? https://www.amazon.com/CRL-Pinchweld-Primer...uct_top?ie=UTF8 |
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| stevegm |
Feb 11 2020, 07:22 PM
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#2
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Advanced Member Group: Members Posts: 2,111 Joined: 14-July 14 From: North Carolina Member No.: 17,633 Region Association: South East States
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914rubber’s kit is 9.5 mm, which is 3/8”.
I have also heard 5/16” is correct, which is 7.94 mm. Does anybody know which is correct? I want to use stock windshield trim. Has xx anyone used either size with chrome? |
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| bbrock |
Feb 11 2020, 08:55 PM
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#3
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914 Guru Group: Members Posts: 5,269 Joined: 17-February 17 From: Montana Member No.: 20,845 Region Association: Rocky Mountains
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QUOTE(stevegm @ Feb 11 2020, 06:22 PM)  914rubber’s kit is 9.5 mm, which is 3/8”. I have also heard 5/16” is correct, which is 7.94 mm. Does anybody know which is correct? I want to use stock windshield trim. Has xx anyone used either size with chrome? The factory manual specs 8mm butyl for both front and rear glass. Despite having a fresh 3/8" 914Rubber kit on hand, I bought 5/16" rope for the rear and it worked perfectly. I will use the same when I do the windshield. |
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| stevegm |
Feb 11 2020, 09:11 PM
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#4
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Advanced Member Group: Members Posts: 2,111 Joined: 14-July 14 From: North Carolina Member No.: 17,633 Region Association: South East States
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QUOTE(bbrock @ Feb 11 2020, 09:55 PM) QUOTE(stevegm @ Feb 11 2020, 06:22 PM) 914rubber’s kit is 9.5 mm, which is 3/8”. I have also heard 5/16” is correct, which is 7.94 mm. Does anybody know which is correct? I want to use stock windshield trim. Has xx anyone used either size with chrome? The factory manual specs 8mm butyl for both front and rear glass. Despite having a fresh 3/8" 914Rubber kit on hand, I bought 5/16" rope for the rear and it worked perfectly. I will use the same when I do the windshield. Where did you find the 8mm butyl? Locally? |
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| bbrock |
Feb 11 2020, 09:36 PM
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#5
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914 Guru Group: Members Posts: 5,269 Joined: 17-February 17 From: Montana Member No.: 20,845 Region Association: Rocky Mountains
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QUOTE(stevegm @ Feb 11 2020, 08:11 PM) QUOTE(bbrock @ Feb 11 2020, 09:55 PM) QUOTE(stevegm @ Feb 11 2020, 06:22 PM) 914rubber’s kit is 9.5 mm, which is 3/8”. I have also heard 5/16” is correct, which is 7.94 mm. Does anybody know which is correct? I want to use stock windshield trim. Has xx anyone used either size with chrome? The factory manual specs 8mm butyl for both front and rear glass. Despite having a fresh 3/8" 914Rubber kit on hand, I bought 5/16" rope for the rear and it worked perfectly. I will use the same when I do the windshield. Where did you find the 8mm butyl? Locally? I bought 5/16" butyl which, as you said, is very close to 8mm. My local FLAPS had it but it was about half the price on Amazon. The factory manual also says to coat the outside of the windshield about 15mm wide with primer. |
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| stevegm |
Feb 11 2020, 09:55 PM
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#6
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Advanced Member Group: Members Posts: 2,111 Joined: 14-July 14 From: North Carolina Member No.: 17,633 Region Association: South East States
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QUOTE(bbrock @ Feb 11 2020, 10:36 PM) QUOTE(stevegm @ Feb 11 2020, 08:11 PM) QUOTE(bbrock @ Feb 11 2020, 09:55 PM) QUOTE(stevegm @ Feb 11 2020, 06:22 PM) 914rubber’s kit is 9.5 mm, which is 3/8”. I have also heard 5/16” is correct, which is 7.94 mm. Does anybody know which is correct? I want to use stock windshield trim. Has xx anyone used either size with chrome? The factory manual specs 8mm butyl for both front and rear glass. Despite having a fresh 3/8" 914Rubber kit on hand, I bought 5/16" rope for the rear and it worked perfectly. I will use the same when I do the windshield. Where did you find the 8mm butyl? Locally? I bought 5/16" butyl which, as you said, is very close to 8mm. My local FLAPS had it but it was about half the price on Amazon. The factory manual also says to coat the outside of the windshield about 15mm wide with primer. Thanks. I found this on amazon: https://www.amazon.com/gp/product/B000CQ4AO...=UTF8&psc=1 I’m also getting the primer: https://www.amazon.com/3M-08682-Single-Step...w_1581478380133 |
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Posts in this topic
Kansas 914 Windshield install with butyl - is butyl primer needed? Jun 23 2017, 07:41 AM
76-914 I did not use any however I did prep with Lacquer ... Jun 23 2017, 07:48 AM Mark Henry What size is the correct butyl...it's the tape... Jun 23 2017, 08:00 AM
mepstein
What size is the correct butyl...it's the tap... Jun 23 2017, 08:07 AM Mark Henry
What size is the correct butyl...it's the ta... Jun 23 2017, 08:09 AM Kansas 914
[quote name='Mark Henry' post='2499469' date='Jun... Jun 23 2017, 08:11 AM Dave_Darling Using the primer is not necessary, but it does hel... Jun 23 2017, 09:24 AM Perry Kiehl Butyl primer will improve the seal. For $17 ... Jun 23 2017, 09:35 AM Kansas 914
Butyl primer will improve the seal. For $17... Jun 23 2017, 10:45 AM Mikey914 no primer required
New paint not needed for sure.... Jun 23 2017, 02:39 PM bbrock With luck, I'll be facing this task in the not... Jun 23 2017, 05:58 PM Dave_Darling Other than originality, are there reasons to stick... Jun 23 2017, 10:07 PM bbrock
Other than originality, are there reasons to stic... Jun 23 2017, 10:49 PM porschetub
Other than originality, are there reasons to stic... Feb 12 2020, 01:04 PM Perry Kiehl Butyl tape is a consistent thickness, in this case... Jun 23 2017, 09:10 PM Montreal914 For the rear window, I have used 5/16 butyl about ... Jun 23 2017, 09:45 PM 914werke
Other than originality, are there reasons to stic... Feb 11 2020, 08:18 PM ConeDodger I did this alone but another set of hands would be... Feb 11 2020, 08:30 PM lierofox https://www.amazon.com/gp/product/B00473W5V...=UTF... Feb 11 2020, 08:32 PM stevegm
https://www.amazon.com/gp/product/B00473W5V...=UT... Feb 11 2020, 09:10 PM lierofox
So you just put the primer on the windshield chan... Feb 12 2020, 01:06 PM mepstein The warmer the better. Mark / Mikey explained the ... Feb 12 2020, 01:20 PM |
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