Firewall welding?

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Firewall welding?

Postby Matt T » Tue Sep 19, 2017 3:34 pm

I have two holes in the passenger floor/firewall area. The floor part is easy--at the top right corner of the toe board--but the firewall hole (from leaves and garbage collecting below the blower motor) is tough to reach in the engine compartment. I can access from inside the car OK, but cleaning/sealing the outside doesn't look fun.
I expect the existing seam sealer to burn as I try to weld it up from inside. Then I'll need to clean it, paint, etc. out in order to seal that side again.

Any advise? I've been bailing and drying under the carpet for a few months now...Need to fix it before cold weather. I guess I could make up a patch, coat it with lots of sealer and screw it in place from the inside to avoid the heat issue, but I need a permanent repair, not a one-two year hack.

Matt T
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Re: Firewall welding?

Postby Jay » Tue Sep 19, 2017 7:55 pm

It's a lot easier to access with the blower box removed. Mine was only just starting to rust through and I was able to coat it with Rust Bullet and a fiberglass patch.
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