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914World.com _ 914World Garage _ To tear out the back firewall or not? Please help me decide

Posted by: ghuff Nov 16 2010, 02:56 PM

So I removed the back half of the wiring harness I peered into the area between the firewalls some. What I saw seemed to make me think if I do not cut access holes in the back firewall to fix what is starting, I may be putting a lot more work into this car in the future................

Pics:

Posted by: SirAndy Nov 16 2010, 03:01 PM

Can't see any pics but if you are talking about the double-walled lower portion of the firewall, it's MUCH easier to access if you simply remove the rear bottom part of the floor pan.

This will give you access to the *complete* double walled section and it's very easy to work in there that way, plus, you can close it all up easily by simply spot welding the floor-pan piece back on.

IMHO, much easier than any "access hole" can ever be ...
popcorn[1].gif

Posted by: 1968Cayman Nov 16 2010, 08:18 PM

Wow. That's nasty. I'd tear it out just to make sure.

Posted by: ghuff Nov 17 2010, 08:05 AM

QUOTE(SirAndy @ Nov 16 2010, 01:01 PM)

Can't see any pics

but if you are talking about the double-walled lower portion of the firewall, it's MUCH easier to access if you simply remove the rear bottom part of the floor pan.

This will give you access to the *complete* double walled section and it's very easy to work in there that way, plus, you can close it all up easily by simply spot welding the floor-pan piece back on.

IMHO, much easier than any "access hole" can ever be ...
popcorn[1].gif

I suck and did not paste the imageshack link then lost it. I will take another pic and post it after work when I am back home.

Do I just sort of cut it where it meets the inner rear firewall that is in the cabin, and then spot it back up on both ends?

Posted by: SirAndy Nov 17 2010, 01:32 PM

QUOTE(ghuff @ Nov 17 2010, 06:05 AM)

Do I just sort of cut it where it meets the inner rear firewall that is in the cabin, and then spot it back up on both ends?

Sort of. You should be able to drill out the spot welds on either side of the firewall and then cut the floor pan in a way that allows you to spot weld the floor piece back on later instead of having to do a butt-weld.

I'm at work and don't have any pics right now ...