 Resealing the rear glass |
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| JPA914 |
 Apr 10 2016, 07:59 PM
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#1
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Member  Group: Members Posts: 81 Joined: 30-June 15 From: Houston, TX Member No.: 18,905 Region Association: Southwest Region  |
Just got done doing this. I used the 3/8" butyl from Napa that seems to be recommended most often (part# MS 4196). Has anybody else who has used this ended up with a gap between the glass and engine lid seal? I pressed the glass in as far as it would go, but I think maybe this butyl is too thick and prevents the glass from seating as far back as it should (IMG:style_emoticons/default/confused24.gif)
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| PancakePorsche |
Apr 10 2016, 09:52 PM
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#2
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Member Group: Members Posts: 236 Joined: 29-July 11 From: Southern California Member No.: 13,373 Region Association: None |
I think 3/8 would be way too thick. thickness of seal should not really exceed 1/8 after install. I believe I used 1/4 and put it in on a warm day to get good 50% minimum squish.
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| dangrouche |
Apr 10 2016, 10:00 PM
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#3
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dangrouche Group: Members Posts: 550 Joined: 1-May 04 From: San Francisco Bay Area Member No.: 2,012 Region Association: None |
I have used 5/16"
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| Valy |
Apr 10 2016, 10:25 PM
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#4
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Senior Member Group: Members Posts: 1,677 Joined: 6-April 10 From: Sunnyvale, CA Member No.: 11,573 Region Association: Northern California |
I used 3/8. No issue.
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| JPA914 |
Apr 11 2016, 08:56 AM
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#5
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Member Group: Members Posts: 81 Joined: 30-June 15 From: Houston, TX Member No.: 18,905 Region Association: Southwest Region |
QUOTE(Valy @ Apr 10 2016, 11:25 PM)  I used 3/8. No issue. I'm glad it worked for you. In my case, however, it's simply too thick. No way to avoid a gap where water can collect between the glass and the engine lid seal. |
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| Jett |
Apr 11 2016, 09:02 AM
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#6
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Senior Member Group: Members Posts: 1,697 Joined: 27-July 14 From: Seattle Member No.: 17,686 Region Association: Pacific Northwest 
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I used 3/8" and had to heat the tape to get the seal. I used a heat gun and kept pressing until it hit the seal.
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| JPA914 |
Apr 11 2016, 09:41 AM
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#7
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Member Group: Members Posts: 81 Joined: 30-June 15 From: Houston, TX Member No.: 18,905 Region Association: Southwest Region |
QUOTE(Jett @ Apr 11 2016, 10:02 AM) I used 3/8" and had to heat the tape to get the seal. I used a heat gun and kept pressing until it hit the seal. Thanks, I'll give that a try. |
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| tomrev |
Apr 11 2016, 12:16 PM
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#8
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Member Group: Members Posts: 231 Joined: 25-February 14 From: N. Mich. Member No.: 17,037 Region Association: None |
You can also get a tube of the black poly sealant, at a glass shop. (same stuff modern windows are installed with). I have used that on the last 914 windows I resealed, with great results, and the ability to press the window nice and snug in position. Tape it in with some masking tape, and let her set for a day.
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| Mikey914 |
Apr 11 2016, 12:43 PM
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#9
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The rubber man Group: Members Posts: 12,772 Joined: 27-December 04 From: Hillsboro, OR Member No.: 3,348 Region Association: None
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Pretty much covered in detail and I still stock the butyl and spacer blocks.
http://www.914world.com/bbs2/index.php?sho...p;hl=rear+glass Chord http://shop.914rubber.com/searchquick-subm...?keywords=butyl Blocks http://shop.914rubber.com/914-Windshield-s...ck-914-WSSB.htm The real key is making sure both surfaces are clean. |
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| JPA914 |
Apr 11 2016, 01:27 PM
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#10
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Member Group: Members Posts: 81 Joined: 30-June 15 From: Houston, TX Member No.: 18,905 Region Association: Southwest Region |
QUOTE(Mikey914 @ Apr 11 2016, 01:43 PM) Pretty much covered in detail and I still stock the butyl and spacer blocks. http://www.914world.com/bbs2/index.php?sho...p;hl=rear+glass Chord http://shop.914rubber.com/searchquick-subm...?keywords=butyl Blocks http://shop.914rubber.com/914-Windshield-s...ck-914-WSSB.htm The real key is making sure both surfaces are clean. Thanks, is this butyl 3/8" or is it thinner? And what's up with step #3 in the instructions? Connect each end of the butyl to a battery?!?!? |
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| SA-914 |
Apr 11 2016, 07:16 PM
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#11
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Member Group: Members Posts: 129 Joined: 30-June 14 From: San Antonio,tx Member No.: 17,566 Region Association: Southwest Region |
The battery was used in the original wired install. It had a wire in and when you connected it to the battery, it would melt the seal.
I just installed my window using 914rubber, and have the same problem.... It's close, but I gave up. It will have to do. Used a heat gun and large block to try to spread the load, but still have a small gap. I also have what seems to be excessive butyl on the outside. |
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| Mikey914 |
Apr 11 2016, 07:36 PM
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#12
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The rubber man Group: Members Posts: 12,772 Joined: 27-December 04 From: Hillsboro, OR Member No.: 3,348 Region Association: None
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If you have heat issues. You may want to use the urethane.
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