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| RonnieJ |
 Sep 28 2010, 06:35 AM
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#1
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RonnieJ  Group: Members Posts: 230 Joined: 16-June 03 From: Sterling Heights, Michigan Member No.: 829 Region Association: Upper MidWest  |
The sealant on my relay board in the engine compartment is getting old and crumbling on the underside...what is used to reseal it?
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| JeffBowlsby |
Sep 28 2010, 08:54 AM
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#2
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914 Wiring Harnesses & Beekeeper Group: Members Posts: 8,967 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None 
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Model Cast is a polyurethane...aren't polyurethanes hygroscopic (they absorb moisture?) I would think thats the wrong material to use for this purpose, regardless of how it looks.
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| Tom_T |
Sep 28 2010, 12:42 PM
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#3
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TMI.... Group: Members Posts: 8,321 Joined: 19-March 09 From: Orange, CA Member No.: 10,181 Region Association: Southern California
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QUOTE(Jeff Bowlsby @ Sep 28 2010, 07:54 AM)  Model Cast is a polyurethane...aren't polyurethanes hygroscopic (they absorb moisture?) I would think thats the wrong material to use for this purpose, regardless of how it looks. So Jeff, I was going to jump in & tell him to contact you for what you showed me that you use on them - so what was that stuff, just tar again? IIRC you're right about the urethanes, which is why it holds moisture in the body cavities where similar products were used on our 914s - like at the sail/fender junctures! (IMG:style_emoticons/default/dry.gif) So George's suggestion may not be much better for attracting moisture, than the Model Cast. IMHO - if not original spec bituminous tar - then if anything, a flexible liquid rubber or sealant type product may be the best alternative, if it dries solid & won't be too runny to stay in the tray bottom during "casting" of it. |
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Posts in this topic
RonnieJ relay board Sep 28 2010, 06:35 AM
Bartlett 914
The sealant on my relay board in the engine compa... Sep 28 2010, 08:20 AM RonnieJ Looks like the model cast is the way to go. Thanks... Sep 28 2010, 08:37 AM
Bartlett 914
Model Cast is a polyurethane...aren't polyure... Sep 28 2010, 09:39 AM
Jeff Bowlsby
I didn't see that it is polyurethane. Where d... Sep 28 2010, 01:24 PM dr914@autoatlanta.com we use 3-m "windo- weld" urethane. It is... Sep 28 2010, 11:18 AM Drums66 ...A type of potting material(not soil) :poke:
w... Sep 28 2010, 12:48 PM andys What the Vagabond tech sheet is refering to is eac... Sep 28 2010, 01:56 PM Bartlett 914
What the Vagabond tech sheet is refering to is ea... Sep 28 2010, 02:04 PM |
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