Practical Gas Flow: Techniques for Low Budget Performance Tuning

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Item # SA-05645  ISBN: 9781855205642




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Techniques for low budget performance tuning. Back in print and completely updated to cover more recent engines and taking into account new emission control laws, etc.

For the do-it-yourself tuner intent on increasing the power output of a car engine, no problem is greater than how to measure, assess and understand the flow of gases through the inlet tract, clylinder head and exhaust.

Gas flow, complex, variable and invisible, is the key to an engine's performance, and professionals use very costly equipment for its investigation. This book describes a practical low-cost alternative that lets you check the gas flow in your engine, devise improvements and test and compare their effect: it needs patience, persistence and some manual skills, but no great financial outlay.

Also explained is an ingeniuous modelling method enabling you to adopt a trial-and-error approach to cylinder head modification without incurring the cost of a new casting if it goes wrong.

Author John Dalton has developed and refined these techniques over many years. He does not offer instructions for specific engines but shows how the methods can be applied to any conventional four-stroke engine. The basic principles are explained where necessary to give the reader a clear understanding but the accent is strongly on practicality rather than pure theory and on carrying out your own work rather than bolting on expensive proprietary bits and pieces.

Where equipment does have to be bought, the book will make an informed choice easier because of the opportunities it offers the interested enthusiast to learn from his own experiments.

This is a genuinely innovative addition to the amateur tuner's library and will be useful whether you aim to put a little more sparkle in your road car or produce an out-and-out competition machine. It is a system that can be used effectively on all engines from the earliest to the very latest all singing and dancing low emissiondesigns with equal effect.

Table of Contents

• Introduction
• Preliminaries
• First experiments
• Modelling
• First modifications
• Anti-reversal
• Cutting metal
• Inlet air
• Exhaust system
• Combustion chamber
• Further details
• New generation engines

Note: the emission of pollutants from car exhausts is the subject of legal controls in most countries. By improving the efficiency of an engine, performance tuning may in fact make it cleaner; alternatively it can often have the reverse effect. In carrying out modifications to any car engine, it is important to pay due regard to the regulations in force in your country or state.

Practical Gas Flow: Techniques for Low Budget Performance Tuning