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Short velocity stacks on a 302 cu.in. Ford FE engine in the tight confines of a Ford GT-40. A velocity stack, trumpet, or air horn [1] is a typically flared, parallel-sided tubular device fitted individually or in groupings to the entry of an engine's air intake system to smooth high speed airflow, and allow engine intake track tuning to incorporate pressure pulses created by its internal ...
Engine tuning is the adjustment or modification of the internal combustion engine or Engine Control Unit (ECU) to yield optimal performance and increase the engine's power output, economy, or durability. These goals may be mutually exclusive; an engine may be de-tuned with respect to output power in exchange for better economy or longer engine ...
Lars Grimsrud is an aerospace engineer and performance automobile enthusiast who has become a celebrity amongst owners of carbureted Chevrolet Corvettes and GM muscle cars for his skill at tuning their engines. Lars Grimsrud was born in Norway in 1932. He graduated in mechanical engineering at NUST in Trondheim in 1955.
Two-barrel downdraft Holley 2280 carburetor Cross-sectional schematic. A carburetor (also spelled carburettor or carburetter) [1] [2] [3] is a device used by a gasoline internal combustion engine to control and mix air and fuel entering the engine. [4]
The Fish carburetor was also sensitive to mass airflow, rather than volume airflow, making it self-compensating for changes due to temperature or altitude. [ 1 ] A second problem with the conventional carburetor was its good performance in steady conditions, but poor progression: its dynamic ability to respond, such as when suddenly opening the ...
Car tuning is the modification of a car to optimise it for a different set of performance requirements from those it was originally designed to meet. Most commonly this is higher engine performance and dynamic handling characteristics but cars may also be altered to provide better fuel economy , or smoother response.
The brothers then concentrated on the manufacturing of carburetors and ignition systems. [5] As a result of the Motorette Henry Ford commissioned the brothers to produce a carburetor for his Model T. "The carburetor they built for Ford was an immediate success and the brothers founded Holley Carburetor Co., which became one of Ford's biggest ...
As the RPM of the engine increases, the throttle plate in the carburetor is gradually closed, reducing the amount of fuel and air admitted to the engine, until the engine RPM is stable. If RPM drops below the desired value, the throttle plate will automatically open, admitting more fuel/air mix to the engine.