Читать книгу High-Performance Automotive Cooling Systems - John Kershaw A. - Страница 6

PREFACE

I wrote this book to guide readers in selecting the best engine cooling system components and their placement for modified vehicles driven on the road or the track. Engine overheating issues often arise when older modified vehicles have high-displacement engines installed for street and track use. These older vehicles had low horsepower engines that were generally smaller in size than the engines that are replacing them. Often, this has led modified vehicles to have problems with low-speed cooling due to incorrect radiator and cooling fan selection. Others overheat at 65 mph in the middle of the day due to the wrong airflow across the radiator or an inadequate water pump. The correct placement of the right components is critical to cooling system efficiency.

To run correctly, the internal combustion engine cooling system must accomplish a harmonizing act. The system needs to remove enough heat to prevent overheating and provide efficient performance while also keeping the engine operating temperature in the 180 to 210°F range. To achieve and maintain optimum temperature range, an efficient engine cooling system needs the correct radiator and fan combination. It also needs the right water pump speed and coolant flow between the engine and radiator to keep the coolant in the radiator long enough to be cooled.

Typically, when an engine overheats or runs too cool, it is due to making one of several mistakes. These mistakes include using water as coolant, installing the wrong radiator, not using an anti-collapse spring in the radiator hose, installing a too-fast fan, not using a cooling fan or having too many cooling fans, installing the wrong radiator cap, using improper fan spacing and shrouding, or using inexpensive components. This book will hopefully dispel some of the common cooling systems myths and misconceptions that lead to incorrect practices and component selection by covering these mistakes.

This book will also cover thermodynamics, heat transfer, components and system operation; how to make your cooling system more efficient; and do-it-yourself service. It will provide information on how to select cooling system components for radiators, coolant, cooling fans, shrouds, thermostats, and more. Let’s get started learning how to build a cooling system for your high-performance modified street or track vehicle.