1954 Firewall Fiberglass Repair Advice Needed

[John L.]

This is a follow up posting to a previous thread I had for fiberglass tunnel repairs - 1954 Tunnel Repair for Floor Shifter.
I have a good sized cut out on the firewall of my 1954 which I need to patch in and thought I would post this question for some advice on how to approach this.
34 011505 Heater Box.jpg
This is a photo of what the firewall should look like...

good firewall.JPG

My plan was to create a mold that would replicate the 90 degree bend (perhaps using a 2x4) and with that create 2 panels, and then would mate the 2 lips together adding rivets then this assembly would be cut and fit into the firewall.
Would this seem to be an effective approach? If the repair were limited to an area above or below the joint it would not be as bad but of course the hole is in both panel.
Any advice or direction appreciated.
John

[Chris S.]

Re: 1954 Firewall Fiberglass Repair Advice Needed

easy fix !!
take cardboard and tape it to the back of the hole
take a sharpie or pen and scribe the hole on the cardboard
cut the cardboard
Lay the template on some flat used fiberglass
cut it out
trim the fiber glass to fit the hole
Tape the glass on the back
V groove - fill etc.......

for the "lips" - glue them on after the repair - using old fiberglass
sand to look OEM - replace the rivets

[John L.]

Re: 1954 Firewall Fiberglass Repair Advice Needed

Ha I wondered if that would be the other approach - seems much simplier.
Thanks!
John.

[Chris S.]

Re: 1954 Firewall Fiberglass Repair Advice Needed

It is pretty simple
once to do some repairs - it is pretty easy
Take your time
have the right materials and tools
If you screw it up - guess what ?? you can re do it !!!!!
If I can do you can do it
This how bad mine got .......MVC-003F.JPG