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Old 10-01-2022, 06:13 PM   #1
philski o'flood
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Default 240 Rust inside under windshield / cowl area

Ok so a blower motor job has turned into let's clean everything, convert to '93 AC and add dyna mat / sound proofing.

But now I gots some rust. The windshield is old and leaky and will be replaced but what should do about this stuff???

Is it coming in through the crimped edges where body and cowl meet?

I have a bottle of rust neutralizer.

Ok thanks.
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Old 10-01-2022, 06:49 PM   #2
nel621
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I would grind it, neutralize it then fiberglass it and paint.
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Old 10-01-2022, 07:52 PM   #3
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Or if you want to try something instead of fiberglass. You could use this after the grinding and rust neutralizing. Lab metal. https://www.ebay.com/itm/17542912526...3ABFBMyv6q3_Jg
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Old 10-01-2022, 10:37 PM   #4
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I've had to do that. Clean it up as best as you can. Rust neutralizer, and prime it. I use seam sealer after that. You can paint afterwards to match if need be.
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Old 10-02-2022, 12:14 AM   #5
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these are good suggestions thanks. But where is the water coming from and is it possible to stop it?... is there rust on the other side of that seam?

Gawddanm it I'd meaning to ask him for months. fawk
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Old 10-06-2022, 03:55 AM   #6
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Greg (carnut222, both here and on Oz Volvo) found a very similar water leak in almost exactly the same place.

Here in upside-down land, that hole in the RH side of firewall in your first pic is almost exactly where the hood release cable passes through in our cars, since RH is driver's side here.

Here's a link to Greg's post, where he describes the problem (basically poor body sealing in the A-pillar joint) and the fix.

https://ozvolvo.org/discussion/comme...Comment_201581
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Old 10-08-2022, 09:34 PM   #7
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Ah crap...I think I have a similar situation with a gap by the hood hinge and rust inside but further down. I too am curious about rust inside the cavity and how to stop it without major surgery.
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Old 10-17-2022, 07:28 PM   #8
philski o'flood
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update... just got done with the dremel and it wasn't hardly anything, just some surface, nothing deep... whew
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Old 11-22-2022, 09:49 PM   #9
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got the rebuilt '93 HVAC box installed today
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