Gas can in nascar

The gas cans used to refill cars hold 11 gallons each and weigh about 70 pounds when full. The dump can is designed to release the fuel it holds into the vehicle within eight seconds. Each fuel can holds 11 gallons, so it takes two full cans to completely refuel a car.

In NASCAR the situation is a little different, with the teams allowed to fill up with as much fuel as they want, with refuelling occurring during the races. The fuel cells in the cars hold approximately 18 US gallons, although the teams will attempt to put in as little as possible at a time in order for the cars to be lighter and therefore quicker. The dump can is designed to release the fuel it holds into the vehicle within eight seconds. Each fuel can holds 11 gallons, so it takes two full cans to completely refuel a car.

This all adds up to some serious fuel consumption. Not many street-cars have engines this big, and the ones that do usually generate well over hp. NASCAR engines have extremely radical cam profiles that open the intake valves much earlier and keep them open longer than in streetcar engines.

The tire changers bring the new tires before the car comes to pit stop. Sunoco Optima is an unleaded fuel blended from highly-refined hydrocarbon blendstocks. Optima does not contain ethanol or MTBE and is oxygenate-free. How does he know when that is? The car will simply overflow. The gas can is measured before and after a pit stop, and based on the weight difference, Hewtyrrell knows how much fuel is in the car after the stop.

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