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ROCHESTER CARBURETORS Bulletin 9D-9 January 1952 |
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ROCHESTER PRODUCTS, DIVISION OF GENERAL MOTORS,
ROCHESTER, NEW YORK |
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MODEL 4GC
ROCHESTER CARBURETOR |
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The Rochester Model 4GC Carburetor
consists basically of two
dual carburetors. The two carburetors will be referred to as the Primary
or Pump Side and the Secondary or Fuel Inlet Side. The Primary Side
completely controls the metering to the engine throughout the idle and
part throttle range. The fuel from the Primary Side is supplemented
by fuel from the Secondary Side throughout the power or wide open throttle
range. This design incorporates many new and distinctive features, as well
as retaining manv of the tested and |
proven features basic to the
design of previous model Rochester Carburetors.
The Model 4GC Carburetor still
retains the six basic systems
of carburetion idle, Part Throttle. Power, Accelerator Pump, Float, and
Choke. The following discussion will trace and describe the operation
of each of these systems, The recommended disassembly and assembly
procedure is also given, for adjust-ment instructions and specifications,
refer 10 Instruc-tion Sheet for the particular car application
concerned. |
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