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| Oldsmobile Engine >> POWDERED METAL CAMSHAFT SPROCKET INTRODUCTION
Powdered Metal Camshaft Sprocket Introduction On
General Motors 2.3L Quad 4 Engines
General Motors has introduced a new camshaft sprocket in the later production 1992 2.3L Quad 4 Oldsmobile engine. The new sprocket is now made of a powdered metal material and previous sprockets were made of a ferrous type metal.
This composition change is one that is becoming prevalent in many engine components today, in both light and heavy duty divisions. Powdered metal components are considerably lighter and less expensive to manufacture. They are used primarily in components that are subjected to no torsional stress. Their wear properties when used in these unique situations are comparable to those of their predecessors, the heavier ferrous metals. They also have the distinct advantage of superior operation (in a compatible environment) over the once-used composite materials with non-ferrous metal timing components.
General Motors indicates that the updated gear is being used in vehicle applications distinct to the L cars and specifically to VIN Code A. This newly designed gear is the replacement for any earlier production vehicles in this classification and carries the GM Part #24570973. Along with the newly designed gear, the introduction of a new wrench, GM Part #J 39579 tool (replaces GM Part #J 36013), which is required for successful installation.
Both wrenches are used in the identical manner, as the appropriate procedure in the service manuals indicate (seeillustration).
AERA is aware of one aftermarket manufacturer supplying the tooling required to successfully change the old and new camshaft sprocket gears.
The AERA Technical Committee
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