Nitro engines, such as those in Funny Car and Top Fuel, require immense amounts of fuel, significantly outpacing typical muscle cars. For example, standard pump gas engines utilize fuel pumps that flow around 35 gallons per hour, while nitro engines demand fuel pumps that move at least 120 gallons per minute. This high consumption is due to the unique burning properties of nitromethane.

In the latest episode of Dragzine’s Tech Inspection, Dean “Guido” Antonelli, the crew chief for Ron Capps’ NAPA Funny Car, elucidates the workings of these specialized fuel systems. Nitro engine fuel pumps are mechanical and driven by the camshaft. They operate alongside various components like shutoffs, bypass valves, barrel valves, and pneumatic timers to manage fuel delivery efficiently. The pump is responsible for supplying the necessary fuel volume, while nozzle jets and pressure curves are utilized for fine-tuning the engine’s performance.

Antonelli’s insights cover both the operational aspects of these fuel pumps and the tuning process essential for optimal engine output. For thorough understanding and detailed information about nitro fuel systems, viewers are encouraged to watch the full Tech Inspection video.



Source: www.dragzine.com