MacGyvering the fuel system

Been under the weather for the past few days but was able to get one item taken care of in addition to some must needed garage clean-up. To keep things simple but effective, I created a custom in-tank swirlpot/sump to resolve the fluctuating fuel pressure on the track.
Essentially I modified a 16oz aluminum water bottle by drilling two 3/8″ holes about 1.5″ from the bottom (one in the front and one in the rear), plus two 1/4″ holes about 3″ from the bottom (one on the left and one on the right), plus one 1/2″ hole for the fuel return line. How does it work you may ask? Well the holes allow fuel from the tank to fill the bottle and be sucked up by the center 1″ fuel pick-up line. While the holes allow fuel to flow into the bottle, they’re restrictive enough to slow the fuel from existing in the turns (like a baffle you find in oil pans). As an extra measure the fuel return also exits into the bottle ensuring a constant flow of fuel. This solution will hopefully be a great alternative to a more complicated and expensive multi-fuel pump/external swirl-pot setup.

Next on the list: (next weekend)
– Hondata CPR (coil on plug ignition)
– Finish new fuel vent (98% done)
– Rebuild transmission w/ carbon lined synchros (in two weeks, maybe)
– New oil breather system (in two weeks, maybe)
– New brake lines (in 2-3 weeks, maybe)

Temp Fuel System + Exhaust Fab

It’s been a little more than a week since the update, so I figured I’d get you caught up on the progress. Also, I only have five days to go before the NCRC Laguna Seca HPDE on Saturday Jan 31st, so things have been moving pretty quickly…

New fuel cell installed (ATL bladder system and the Aeromotive pump were removed).
The picture of the finished product came out blurry (will update it later), but this will give you a good idea of what was done. It’s a generic plastic 8-gallon fuel cell from Summit Racing with a -8AN inlet and outlet, and of course the fill hole. Given the VERY tight time constraints, I had to settle for this setup as I was able to get it overnighted and installed without affecting the project timeline. Despite the lack of internal baffling (only foam) I should be ok as long as I keep it topped off between sessions (each session being 15-20mins and typically consuming 3-4 gallons).

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