Gotta question--

Greg Reimer 7376 · 04-15-2021, 08:08 PM

I put a 5 gallon fuel cell in the trunk of a car, it doesn't need a roll bar yet,I was going to keep the OEM rear seat, but I know I need to install some kind of firewall between the trunk and the interior. What thickness? I wanted to use aluminum since I have access to some, but I need to know the legal thickness required. I know you guys would know.Thanks!!

MR DERBY CITY · 04-15-2021, 08:20 PM

Pretty sure alum minimum thickness is .040 .....

FED 387 · 04-15-2021, 08:28 PM

General Regulations 7.3 & 7.4---- .032 aluminum & .024 steel firewalls and floor pans--FED 387

Greg Reimer 7376 · 04-15-2021, 09:08 PM

Thanks. I was looking in the wrong place. Knew you guys would know!!

MR DERBY CITY · 04-16-2021, 09:30 AM

Quote:

Originally Posted by FED 387

General Regulations 7.3 & 7.4---- .032 aluminum & .024 steel firewalls and floor pans--FED 387

Yes, you are correct....I was wrong...Thanks Mr. fed

04-15-2021, 08:08 PM	#1
Greg Reimer 7376 VIP Member Join Date: Nov 2008 Location: Glendora,Calif. Posts: 1,135 Likes: 172 Liked 704 Times in 218 Posts	Gotta question-- I put a 5 gallon fuel cell in the trunk of a car, it doesn't need a roll bar yet,I was going to keep the OEM rear seat, but I know I need to install some kind of firewall between the trunk and the interior. What thickness? I wanted to use aluminum since I have access to some, but I need to know the legal thickness required. I know you guys would know.Thanks!! Last edited by Greg Reimer 7376; 04-15-2021 at 08:09 PM. Reason: spelling

04-15-2021, 08:20 PM	#2
MR DERBY CITY VIP Member Join Date: Feb 2014 Location: Derby City, USA Posts: 3,636 Likes: 1,083 Liked 7,927 Times in 1,516 Posts	Re: Gotta question-- Pretty sure alum minimum thickness is .040 .....

04-15-2021, 08:28 PM	#3
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,418 Likes: 523 Liked 332 Times in 180 Posts	Re: Gotta question-- General Regulations 7.3 & 7.4---- .032 aluminum & .024 steel firewalls and floor pans--FED 387

04-15-2021, 09:08 PM	#4
Greg Reimer 7376 VIP Member Join Date: Nov 2008 Location: Glendora,Calif. Posts: 1,135 Likes: 172 Liked 704 Times in 218 Posts	Re: Gotta question-- Thanks. I was looking in the wrong place. Knew you guys would know!!