View Full Version : Engine Firewall
I know a bunch of builders have fabricated their own firewalls to separate the engine and fuel tank. I think that is probably a really smart idea and would like to see what you guys have done to give me some ideas. Thanks.
wallace18
11-24-2013, 06:26 PM
Try looking at the build threads.
Try looking at the build threads.
I did, but it's a lot to sort trough. It'd be nice to have a one stop shop with pictures, dimensions, materials, etc.
wallace18
11-24-2013, 09:09 PM
I did, but it's a lot to sort trough. It'd be nice to have a one stop shop with pictures, dimensions, materials, etc.
It is on my build thread. 14ga. Aluminum. You need to measure and fit to your own kit IMO.
Any reason a firewall shouldn't be mounted on the fuel tank side of the bulkhead? Seems like there would be less cutting to make it fit.
Mechie3
11-25-2013, 03:16 PM
IMO, on the engine side it puts more space between the fuel tank and headers (if it's used as a heat barrier). It also gives a smooth surface. If it's placed on the inside you end up with the frame rails exposed which can collect dust, dirt, and water.
AZPete
11-25-2013, 05:08 PM
I agree, the engine side looks and works better. I have cut & drilled a .040 panel but it's out getting powder coated now. What insulation would be good for the 1.5" closed space?
Thanks for the inputs! Here's my result:
http://i579.photobucket.com/albums/ss233/RCGsupra/818%20Build/20131216_172500_zps65503fd4.jpg (http://s579.photobucket.com/user/RCGsupra/media/818%20Build/20131216_172500_zps65503fd4.jpg.html)
I cut it in to two pieces to make it easier to handle. I used 1/4 RivNuts (need to order more) and 1/4 Button head screws. I also used EZ cool for insulation. It would have been nice to go w/ a slightly thicker aluminum, but I got this sheet very cheap. Should get the job done.
Canadian818
12-16-2013, 10:37 PM
I believe a few people now have used rivnuts for their firewalls, and I'm wondering why? I can't imagine any reason to ever remove it.
Xusia
12-17-2013, 12:59 AM
I would think it's far easier to get at the gas tank from that side as opposed to the cockpit.
Bob_n_Cincy
12-17-2013, 01:17 AM
I believe a few people now have used rivnuts for their firewalls, and I'm wondering why? I can't imagine any reason to ever remove it.
Maybe to cut holes for e-brake cables, fuel fill hose, wiring harness, wagon style seat belts.
To me, removable is a good thing.
Bob
Canadian818
12-17-2013, 01:30 AM
I would think it's far easier to get at the gas tank from that side as opposed to the cockpit.
Once the engine and body are installed?
Xusia
12-17-2013, 01:39 AM
Depending on what you need to do, yes. You remove a few bolts, and the panels come off. Again, depending on what you need to do, you may not even need to remove them from the engine bay - just reach in. I just don't see the logic in permanently mounting that panel when it's so easy to make it removable. You never know what your future needs might be...
But hey, it's your build. Do it how YOU see fit!
Yea, I'm with the rest of the guys. To me it's not a question of why, but why not?