Shell Fiat 600 car Modifications list:
From general reading in the links I provided about the vehicle I have a list of essential modifications to the car that helped enable it to get 1 Liter fuel economy at low speeds.
#1. No alternator.
#2. No water pump replaced with Electric fuel pumps (2) to pump the water.
#3. No radiator a small heater core was used instead.
#4. The engine and transmission were insulated to hold the heat during the race.
#5. Shocks were removed and solid suspension was installed.
#6. Taller tires were installed to reduce wheel speed to drop engine rpm.
#7. Carb capacity was reduced. Accelerator pump use was removed.
#8. Hotter ignition was installed to overcome leaner air/fuel mixtures.
#9. Suspension was stablized to remove excessive movement (causing energy loss).
#10. Tires were over inflated for less rolling resistance.
Anyone that can provide updates and additions to this list feel free to do so. The technical paper Mileage Marathon from 50 to 244 mpg has a very detailed overview of the Fiat and all of its modifications. I have located the paper here =
Mileage Marathon from 50 to 244 mpg
I may end up getting it just for the heck of it. I think it would be a good addition to the library and a compliment to the book fuel economy of the gasoline engine which is invaluable with tons of details on how to achieve high fuel economy which I all ready have on the shelf.