I vaguely recall some controversy coming out of one of the Nationals from some years ago. SpecE30’s that had big holes in their rear firewall for their cage bars ran into trouble because Nationals Tech said that the rear firewall needed to be largely intact in order to protect the driver from, I don’t know, the brake lights or something.
Does anyone recall this? I have big holes in my rear firewall and I have to remove a seat to get back there. I have a seat removed right now so if I need to patch those big holes, now is the time. But I want to make sure that I’m doing it for a good reason and not because I’m imagining the whole thing.
15.6.11 Rear Braces
The main hoop should have two (2) braces extending to the rear. The braces shall be attached as near as
possible to the top of the main hoop, and no more than six (6) inches below the top. The braces should not
contain any bends*. There must be at least 30 degrees between the plane of the main hoop and the plane of
the rear braces. The main hoop rear braces may consist of an “X” pattern design. The main hoop braces may be mounted at the rear shock mounts or suspension pickup points (providing that the braces remain in compliance with all other sections of the CCR). They may go through any rear bulkhead(s) provided the bulkhead(s) is sealed around the cage braces.