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[citation needed] They were also equipped with a self-contained choke mechanism that no longer relied on an intake manifold mounted choke, and a number "1" was added to the beginning of their identification numbers. [citation needed] The digits in a Quadrajet model type denote its features. For example, the "E" at the end of a later Q-jet model ...
The LE9 5.0 L (305 cu in) was a version of the 305 with a four-barrel 650 cu ft/min (18 m 3 /min) carburetor and equipped with electronic spark control (ESC), [33] a 9.2-9.5:1 compression ratio, the LM1 cam and 14010201 casting heads featuring 1.84/1.50" valves, and 53 cc (3.2 cu in) chambers. The engine produced 165 hp (123 kW) at 4,400 and ...
In 1957 Chevrolet introduced their first fuel-injected engine, [12] the Rochester Ramjet high-performance option on Corvette and passenger cars at $484. [13] In 1956 Oldsmobile were also experimenting with Rochester fuel injection, at the GM desert proving grounds near Phoenix, but offered the Rochester triple-carburetor J2 option for 1957. [14]
Choke valves are important for naturally-aspirated gasoline engines because small droplets of gasoline do not evaporate well within a cold engine. By restricting the flow of air into the throat of the carburetor, the choke valve reduces the pressure inside the throat, which causes a proportionally greater amount of fuel to be pushed from the ...
Another method used by carburetors to improve the operation of a cold engine is a fast idle cam, which is connected to the choke and prevents the throttle from closing fully while the choke is in operation. The resulting increase in idle speed provides a more stable idle for a cold engine (by better atomizing the cold fuel) and helps the engine ...
Rear-wheel-drive cars and the Commercial Chassis for hearse and ambulance builders used the Rochester Quadrajet 4-barrel carburetor. Cadillac referred to this new TBI (throttle-body fuel injection) system as Digital Fuel Injection (DFI); this particular induction system was later adopted by other GM divisions, except on Oldsmobile V8s, and was ...
It used hydraulic lifters and a two-barrel carburetor for most of its production, though four-barrel Carter Thermo-Quad and Rochester Quadrajet carburetors were used in police applications starting in 1978 and 1985, respectively. The 318 two-barrel ELD received roller lifters and a fast-burn chambered cylinder head in 1985 (the four-barrel ...
In oil and gas production a choke manifold is used to lower the pressure from the well head. It consist of a set of high pressure valves and at least two chokes. These chokes can be fixed or adjustable or a mix of both. The redundancy is needed so that if one choke has to be taken out of service, the flow can be directed through another one.