Question about firewall.

Mark Yacavone · 06-12-2017, 12:12 PM

David, It really depends on what kind of finish and look you are trying to achieve.
As Larry said, you'd probably want to fill and grind from the engine side.
For a quickie, you could make one patch panel that would cover the heater hole and surrounding small holes, all in one shot. Pop rivet it on from the front. A couple of 1/4 -20 bolts and flat washers for the remaining holes , a can of Krylon semi, and you could be done in an hour. All up to you.

Coleydog · 06-12-2017, 01:48 PM

I maybe want to return my car back to stock one day and have basically same question, can I just pop rivet or bolt a piece of aluminum over the whole heater fan opening using existing holes?
I like the idea of using nails, I have other projects to use that idea on.
Just had to return, after thinking of the nails, just had to say that's one heck of an idea, my mind is racing now.

Wayne W · 06-12-2017, 06:00 PM

I am lazy, so, I would use some body panel adhesive on a piece of metal and put it on the inside of the firewall. When it is cured you can finish the engine side smooth and paint. No warpage of the metal and no fires. If it hold quarter panels on cars it will hold those small pieces. In the old days I did it with bondo and they stayed. Mickey Mouse but it works

06-12-2017, 12:12 PM	#1
Mark Yacavone Veteran Member Join Date: Mar 2002 Location: Miles From Nowhere Posts: 7,815 Likes: 2,904 Liked 5,121 Times in 1,952 Posts	Re: Question about firewall. David, It really depends on what kind of finish and look you are trying to achieve. As Larry said, you'd probably want to fill and grind from the engine side. For a quickie, you could make one patch panel that would cover the heater hole and surrounding small holes, all in one shot. Pop rivet it on from the front. A couple of 1/4 -20 bolts and flat washers for the remaining holes , a can of Krylon semi, and you could be done in an hour. All up to you. __________________ "We are lucky we don't get as much Government as we pay for." Will Rogers

06-12-2017, 01:48 PM	#2
Coleydog Senior Member Join Date: Jul 2014 Posts: 572 Likes: 39 Liked 53 Times in 38 Posts	Re: Question about firewall. I maybe want to return my car back to stock one day and have basically same question, can I just pop rivet or bolt a piece of aluminum over the whole heater fan opening using existing holes? I like the idea of using nails, I have other projects to use that idea on. Just had to return, after thinking of the nails, just had to say that's one heck of an idea, my mind is racing now. Last edited by Coleydog; 06-12-2017 at 01:51 PM.

06-12-2017, 06:00 PM	#3
Wayne W Junior Member Join Date: Aug 2010 Posts: 91 Likes: 8 Liked 3 Times in 1 Post	Re: Question about firewall. I am lazy, so, I would use some body panel adhesive on a piece of metal and put it on the inside of the firewall. When it is cured you can finish the engine side smooth and paint. No warpage of the metal and no fires. If it hold quarter panels on cars it will hold those small pieces. In the old days I did it with bondo and they stayed. Mickey Mouse but it works