The air jacks are done but haven’t been able to test the car on the ground since I’m waiting on the rear trailing arm replacement.
ATL Fuel System
I’ve now switched my focus to the fuel system. After spending a few days removing the old setup, I cleaned and relined the containment box with new heat shielding film and neoprene rubber before installing the new lower bladder. The fitment is pretty close to perfect. Next up is the plumbing which will take some time. The system uses dual fuel pumps that can either be ran together (high-flow) or ran independently (redundant setup) where one pump will act as a reserve back-up. In the spirit of endurance racing, I’ll likely run the pumps in this manner and use the existing “fuel reserve” switch on the center console for the second pump. Regarding the wiring, I’ll try to connect everything so that when the reserve switch is thrown, it will shut off the primary pump and activate the secondary pump. Additionally, I will also connect two -6AN one-way valves between the fuel pumps and the Y-adapter so back-flow won’t be an issue. From the Y-adapter, a single -8AN line will run up to the fuel rail and fuel pressure regulator. (not sure if I’ll run the lines under or inside the car?) The return line will be -6AN and for safety I’ll plumb new fire nozzles to cover the bladder box, and will also use compression style fittings/hoses once I get the layout finalized using spare parts.
Below are some pictures showing the lower bladder installed (hard to see) and also the upper bladder mock installed. The last picture is with the metal lid to give you an idea of how the system will look.
General design of the system:
Regarding the cage, no it does not have a diagonal bar on the main hoop. European FIA cages are designed very differently then in the U.S, or at least when compared with U.S. road racing specifications. Also the material is T45, not mild steel, making the entire cage weight less then 90lbs. Personally speaking I’d rather have an FIA/RIA cage, however, it does make racing the car in the U.S. rather difficult in certain series (for HPDE it doesn’t matter). The chassis/cage did get SCCA Pro certified back in 2001 and 2002, however, I was told they more or less looked the other way (probably because it’s just as good as if not more safe then what they require). I have no idea what they’d say if I tried to certify it again. I also don’t have the SCCA log book (lost with a previous owner. I think Ben Schaeffer (2nd owner) had it last.
Below is a diagram of the cage taken off the FIA certification sheet for the car: