Transcription of WEIAND SUPERCHARGER TECHNICAL INFORMATION
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WEIAND SUPERCHARGER TECHNICAL INFORMATION . SUPERCHARGER Basics There are currently three basic types of superchargers being Roots blowers have been used on GMC diesel engines for sold in the performance market today: the Roots type (all many years. In the late 1950s, Phil WEIAND was in the WEIAND Superchargers are Roots blowers), centrifugal, and forefront of the development and adaptation of these super- screw type. (Note that throughout this tech manual the chargers for racing and performance applications. The com- terms SUPERCHARGER and blower are used interchangeably pany was active in producing manifolds and drive systems for since they mean exactly the same thing.) adapting GMC diesel superchargers, such as the 4-71 and 6-71, followed by the development of its own superchargers The centrifugal SUPERCHARGER is very similar to a turbocharger, that are completely manufactured by WEIAND (including except the centrifugal SUPERCHARGER is driven by a belt off the 8-71 models).
(Note that throughout this tech manual the terms “supercharger” and “blower” are used interchangeably ... Supercharger boost, however, is not totally con-stant. This is because at lower blower speeds, the clearances between the blower case and the rotors allows for air “leak-age” with some loss of boost efficiency. If your engine is not
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