Quote:
Originally Posted by AI#97
floor pans MUST be stock and can only be "clearanced" for exhaust, driveline and suspension clearance. what you described would be illegal in AI and X...
CMC
7.5.8 All chassis and structure repair must be done as close as possible to the OEM factory specifications. Besides what is allowed by these rules, no additional chassis/frame strengthening is allowed. All body repairs must maintain OEM stock contours.
AI
7.3 Frame
The entire tub, floorpan, firewall, and frame assemblies including the cowl and windshield frame must remain in the stock position and cannot be relocated. “Cowl” is defined as the metal structure installed by the factory between the firewall and base of the windshield. “Frame” and “framerail” are defined as the parallel boxed metal rails running the length of the car that form the basis of the unibody or frame. “Floorpan” is defined as the sheetmetal forming the floor and trunk floor of the car. Cars may not be
“channeled” to raise the floor within the body or lower the body below the frame rails. The only modifications to these structures allowed will be in the following instances and no secondary purpose for a modification is allowed (i.e. electrical cable passage facilitating suspension clearance). If a modification is not listed below it is specifically not allowed.
a) To facilitate the addition of safety equipment such as subframe connectors and roll cage bracing (i.e. roll cage may extend through the firewall to strut towers);
b) To facilitate plumbing or electrical access. For AIX only, plumbing shall include intercooler or intake piping, but all air intakes must be mounted outside the cockpit.
c) To facilitate transmission fitment or access.
d) For installation of a fuel cell or fuel tank access. S197 chassis Mustangs may relocate the fuel tank from the rear seat stock location to the trunk area behind the rear axle.
e) For exhaust clearance. This does not allow exhaust components to be run through the firewall, which is not allowed.
f) To facilitate installation of and access to ignition and induction components in 4th generation F-body GM vehicles. Allowed modification is restricted to removal or clearancing of the cowl/wiper bucket area. The cowl and firewall must remain otherwise intact.
g) The floorpan may be modified for the purpose of facilitating the installation of a three-link type suspension. Such modification is limited to a hole being cut in the floorpan to allow the “third link” to pass through the floorpan to the attachment point in the cockpit. All components that intrude into the cockpit must be covered.
h) Rear framerails may be “notched” for suspension clearance in AIX only.
i) AIX vehicles may have the rear floorpan between the frame rails removed from the roll cage main hoop rearward, but the frame rails must remain intact and a suitable covering must be in place to provide a bulkhead between the driver compartment and the ground.
From the CCR
27.4.2 Damage
Damage from an incident is limited to the following definition: Any sheet metal, fiberglass, or other body material, deformity significant enough to cause the NASA Officials to enforce the “50/50 rule,” thus requiring repairs. Damage to suspension or other mechanical components are not included in this definition. Damage to plastic or vinyl bumper covers, trim pieces, splitters, marker lights; and marks from tire rubs, are not considered damage for the purposes of this section.
CMC ... as close as possible doesn't explicitly say OEM only.
The AI statute is about ALTERING a car's floor pan, firewall, etc during the build, not repairing damage.
And the CCR defines damage and it's cosmetic appearance quite loosely.
I'd say repairing rust damage in a car using sheet metal is OK as long as it meets the 50/50 rule and you don't alter the pan to accomodate relocating major components.
