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Old 11-17-2019, 07:11 PM   #1
hubdawg
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Top crack repair

Wondering if the best fix for these joints is seam sealer
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Old 11-18-2019, 05:28 PM   #2
hubdawg
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Re: Top crack repair

Bueller.......Bueller........Anybody? trying to do this week and really trying to do it right...lol
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Old 11-18-2019, 08:47 PM   #3
truckster
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Re: Top crack repair

I'm not a bodywork expert, but I think the answer would be that seam sealer would be a temporary fix at best. The top is made of SMC (sheet molded composite, similar to fiberglass) and what you're seeing is a structural defect. Seam sealer isn't meant for structural problems.
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Old 11-18-2019, 09:47 PM   #4
litebulblsc
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Re: Top crack repair

Those are factory seams. What ever they used, is cracking out. The other common place i found for this to happen is in the gutters. I am of no help on the correct fix.
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Old 11-18-2019, 09:57 PM   #5
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Re: Top crack repair

You might try the paint and bodywork subforum.
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Old 11-19-2019, 12:51 PM   #6
hubdawg
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Re: Top crack repair

I'm thinking grind the old sealer out and recoat with new seam sealer and re-raptor the top. Definitely not structural just where the top was seamed at the factory, years of on and off probably pushed the 50 year old product to it's max.
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Old 11-19-2019, 02:32 PM   #7
A1971Blazer
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Re: Top crack repair

grind and feather out the seam and repair with stranded fiberglass epoxy filler
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Old 11-19-2019, 04:37 PM   #8
hubdawg
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Re: Top crack repair

Got a heads up from a local guy who recommended PC 11 marine epoxy which can be sanded and painted. I'll let you know how it turned out
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Old 11-19-2019, 07:57 PM   #9
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Re: Top crack repair

Quote:
Originally Posted by hubdawg View Post
Definitely not structural...
The seams on SMC are structural. It's where two pieces of molded composite were joined together. Look at the curve at the top of the window and you can see a crack around the radius.
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Old 11-19-2019, 08:13 PM   #10
litebulblsc
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Re: Top crack repair

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The seams on SMC are structural. It's where two pieces of molded composite were joined together. Look at the curve at the top of the window and you can see a crack around the radius.
Probably not corrcect to call it not structural. But the "crack" at the window is still just the seam opening.
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Old 11-19-2019, 09:00 PM   #11
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Re: Top crack repair

I wasn't talking about the seam. It looks like there's a small crack that's around the radius of the window opening. The red lines point to what I'm talking about.
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Old 11-27-2019, 02:26 PM   #12
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Re: Top crack repair

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