repairing A/C box with fiberglass - Chevelle Tech
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post #1 of 4 (permalink) Old Aug 22nd, 15, 7:50 PM Thread Starter
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Jerry
 
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repairing A/C box with fiberglass

I need some help with doing a fiberglass modification on an A/C box.
Actually it's not on my Chevelle. I'm doing a 5.3 swap into a 94 S10. I have the box cut out to clear the valve cover.
I went to get a fiberglass repair kit today. I was at the store and was confused as what to get.
There is fiberglass gel and fiberglass resin kits.
Any comments or suggestions as to what to use?
Thanks.


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post #2 of 4 (permalink) Old Aug 22nd, 15, 9:20 PM
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Re: repairing A/C box with fiberglass

You need fiberglass resin, some matting material, catalyst (MEKP) and don't forget acetone for cleanup. I've seen kits that had the first 3 items.

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post #3 of 4 (permalink) Old Aug 23rd, 15, 10:34 AM
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Charlie
 
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Re: repairing A/C box with fiberglass

As Alan said, the kit with the fiberglass material, the resin and the hardener is what you're looking for. There are two different commonly used materials- either the woven random fibermesh, or the material that feels more like a cloth, or mat.
If you've never used the stuff before, be ready for some strong chemical odors. As far as going about the repair, I would use a thin aluminum sheet, (like a pot pie dinner plate) to fashion a backer plate or mold, to keep the liquid from migrating all over- even a patch made out of duct tape could act as the backing to provide a basic shape to what you're trying to do.
You'll have probably 10-15 minutes of working time- depending on how much hardener you added to the resin, and how warm the conditions are when you're doing this. If you cant get it done in one batch, you can add another. After it all dries, I'd sand it relatively smooth, you'll have sanded thru some of the mesh- and then apply just a coat of prepped resin, so it can smooth the surface out and make a final sanding easier.

Charlie

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post #4 of 4 (permalink) Old Aug 23rd, 15, 4:00 PM Thread Starter
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Jerry
 
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Re: repairing A/C box with fiberglass

Thanks guys.
I got a kit today.


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