This fully revised and updated edition is one of the most comprehensive references available to engine tuners and race engine builders. Bell covers all areas of engine operation, from air and fuel, through carburation, ignition, cylinders, camshafts and valves, exhaust systems and drive trains, to cooling and lubrication. Filled with new material on electronic fuel injection and computerised engine management systems. Every aspect of an engine's operation is explained and analyzed.

The process of building 4-stroke engines to a professional standard, from selecting materials and planning work, right through to methods of final assembly and testing, written for the DIY engine builder in an easy-to-understand style, and supported by approximately 200 photographs and original drawings. Containing five engine inspection and build sheets, and the contact details of approximately 45 specialist manufacturers and motorsport suppliers, the book explains build methods common to all 4-stroke engines, rather than specific makes or models. An essential purchase for all engine-building enthusiasts.

This classic has been completely updated for the second edition. John Robinson, the Technical Editor of Performance Bikes', explains how various stages of engine tune are reached, and describes typical development work with enough theory to devise a practical development programme. The phenomena described are all known to work - the trick is making them all work together. Engine development is slow and expensive, but the results can be very rewarding, both in competition and in the sheer pleasure of using a motor which is crisp and perfectly set up. Although it is not possible to make all-round engine improvements, other than those gained by careful assembly to the exact stock tolerances, improvements in one area can be traded' for losses in another: increases in high-speed power balanced perhaps against losses in low-speed power, engine flexibility and reliability. John Robinson takes the reader through the processes which are necessary to make your four-stroke run perfectly. Will be promoted by PERFORMANCE BIKES

DIVThis thorough how-to manual helps the off-road motorcycle enthusiast get the most out of their machine. This one-stop reference covers everything from basic maintenance to performance modifications, including: • Engine rebuilding• Transmission rebuilding• Clutch repair and rebuilding• Big-bore kits• Cam kits and valve timing and tuning• Tuning stock suspension• Suspension revalving and kits• Jetting and tuning carburetors• Tuning electronic fuel injection• Wheels, tires, and brakes• Chains and sprockets• Cooling systems • Electrical systems/div

Engine-tuning expert A. Graham Bell steers you through the various modifications that can be made to coax maximum useable power output and mechanical reliability from your two-stroke. Fully revised with the latest information on all areas of engine operation, from air and fuel, through carburation, ignition, cylinders, porting, reed and rotary valves, and exhaust systems to cooling and lubrication, dyno tuning and gearing.

This third edition, in the same tradition as the second, is a vital servicing tool containing information covering virtually every motorcycle over 50cc sold in the UK since 1980. The author is technical editor of `Performance Bikes' and author of the well known `Motorcycle Tuning' books. The book provides access to the most frequently used data for dealers, mechanics and enthusiasts who have to deal with a wide variety of machines and wish to compare the features of different models. A seperate section lists conversion tables, standard torque settings for threaded fasteners, tyre size codes, tyre speed and load schedules and addersses of importers. Machines are listed alphabetically by manufacturer and then in order of capacity or model number.

The suspension expert’s illustrated, comprehensive troubleshooting guide for dirt, street, and supermoto—with a solution to virtually any problem. Suspension is probably the most misunderstood aspect of motorcycle performance. This book, by America’s premier suspension specialist, makes the art and science of suspension tuning accessible to professional and backyard motorcycle mechanics alike. Based on Paul Thede’s wildly popular Race Tech Suspension Seminars, this step-by-step guide shows anyone how to make their bike, or their kid’s, handle like a pro’s. Thede gives a clear account of the three forces of suspension that you must understand to make accurate assessments of your suspension’s condition. He outlines testing procedures that will help you gauge how well you’re improving your suspension, along with your riding. And, if you’re inclined to perfect your bike’s handling, he even explains the black art of chassis geometry. Finally, step-by-step photos of suspension disassembly and assembly help you rebuild your forks and shocks for optimum performance.

Practical advice for anyone looking to increase the power of their motorcycle through turbocharging or supercharging. This valuable guide contains sections on ram air induction, fueling, electronic fuel injection, nitrous oxide, plus chapters on choosing the right bike for power boosting and factory turbo bikes.

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