Graham bell starts off by saying that he doesnt believe port time area and its all about the duration the ports are open. Velosolex s 3800 2stroke tuning and engine design books. Pdf two stroke performance tuning download full pdf. Two stroke engine porting, head mods and pipes two stroke tuning advice from the experts at bimotion. Graham and a great selection of related books, art and collectibles available now at.
However, it does contain a chapter on ecus and how they work. Generally, you will also need to rejet your carburetor to allow a greater volume of fuelair mixture to enter your. The high performance 2stroke engine is a pulse resonance. Graham bell explains and analyses every aspect of an engines operation in this illustrated book. The only problem is finding his books due to them being discontinued and published only for a short period. Graham bell is the author of twostroke performance tuning 4. Lets journey back to 1973 and read the book that was the two stroke bible of that era.
The old adage of stuffing cases on every project just isnt true any more. The trend in high performance two strokes has continued towards more case volume, however each engine and application differ. Graham bell second edition this is the moped performance tuning bible as far as im concerned. 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. Although this book is directed to small bikes and karts all the information is relevant to two stroke scooters.
Great book for those of us who like to really get nitty gritty with their engine tuning. Two stroke performance tuning two stroke all of these detonation triggers are virtually unavoidable, with the exception of excessive spark lead. Im looking at creating a chainsaw from a 2 stroke 250cc singly cyl bike engine, for competitions, demos etc. Stan stephens tuning are the uks number 1 two stroke tuning firm. Head machining to suit unleaded or race fuel to get a perfect burn from your engine. Buy how to build, modify and power tune cylinder heads speedpro series 3rd revised edition by peter burgess, david gollan isbn. Drawing on the authors many years of experience in tuning and modifying high performance road, rally and race units, every aspect of an engines operation is explained and analyzed.
The inlet port opens 30 after bdc and closes 79 after tdc. Two stroke tuners handbook 2 another mistake commonly made, sometimes even by those who have enjoyed some success in modifying twostroke engines, is to believe in a kind of mechanistic magic. Only with the device that constantly be with your everywhere, you could read this book four stroke performance tuning. Four stroke performance tuning having read the two books by greg banish on ecu calibration, i found some links to a book by a. Millennium technologies provides repair and maintenance services for cylinders and cylinder heads, and manufactures nickel silicon carbide plated cylinders for a variety of engines, including motorcycles, snowmobiles, race cars, karts, dirt bikes and watercraft. Ultralight propulsionthe basic handbook of ultralight engines, drives, and propellers, glenn. The various forms of motorsport and street use all have. Two stroke performance tuning a disc partially cut away and attached to the end of the crankshaft opens and closes an inlet port in the side of the crankcase. It is my hope that this book will assist the enthusiast involved in motocross. Performance tuning in theory and practice a foulis book. All the parts within any engine are designed and engineered using the appropriate mathematics to function efficiently and be durable.
Geared specifically for gp and kart racers, this hardcover treasure has turned out to be a great reference source for questions on the logic and concepts that pertain to tuning a 2 stroke for maximum performance. Other books to his credit are modern engine tuning, twostroke performance tuning and forced induction performance tuning. He is in my view a good candidate for reading due to his knowledge of vintage and modern 2 stroke piston port engines. When rallying created road car icons, covers the ten years from 1987 to 1996 when group a went from featuring fairly unexciting road cars to exotic, hitech rally cars whose performance was not much less than their predecessors. Two stroke tuners handbook 2 another mistake commonly made, sometimes even by those who have enjoyed some success in modifying two stroke engines, is to believe in a kind of mechanistic magic. Four stroke performance tuning 9780857331250 by bell, a graham and a great selection of similar new, used and collectible books available now at great prices. An excellent academic book on the theory behind performance tuning for 2 stroke motorcycles. Reviewed in the united states on november 20, 2014. A man named aaen olav aaen performance had some published work about piston port 2 stroke technology and performance. The high performance two stroke engine by john dixon is also very good. Buy a discounted hardcover of twostroke performance tuning online from. Nov 11, 2010 jennings book talks about port time area and porting the cylinder to have peak efficiency at a certain rpm. Bells four stroke performance tuning book, this book goes into extreme detail regarding performance tuning a two stroke engine.
These kits replace your cylinder and piston with a larger bore. Most of the errors is to choose a less appropriate combination of engine components so that the engine actually ran worse than standart, ever experienced. Bigger carburetors, higher compression ratios, altered port timings and expansion. Download pdf two stroke performance tuning book full free. Improper tuning of your carb will definitely lead to lagging. Two stroke performance tuning chapter 3 porting and cylinder scavenging today, when we take a look down the cylinder of a two stroke engine, we find its walls literally filled with ports to handle the induction, transfer and exhaust phases of gas flow through the engine. An uptodate book on four stroke tuning from the performance. Mspec twostroke performance services millennium tech. The piston crown opens and closes the exhaust and transfer ports. Graham bell steers you through the various modifications that can be made to coax. Two stroke carbs are usually found on leaf blowers, motorized bikes and mopeds. His port time equations dont even include rpm, you input the dime. Everyday low prices and free delivery on eligible orders. Jenning vs graham bell, 2 stroke tunning books motorcycle.
Drawing on his practical experience in tuning and modifying high performance road, rally and race units, it sets out in detail the many prionciples involved in tuning four stroke engines. I have the book, but its nice to have as a pdf as well and a good reference for those who dont know about it. In motocross its usually a compromise between best peak hp and good early off the pipe power. I need to find a company that specialises in high performance tuning for 2 stroke engines. You could not bring for those books to someplace you go. How to tips from tj on porting and polishing 2 strokes. Whether youve loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them. As the title implies, this is not a book specific on ecus. There is a huge interest in vintage snowmobiles and their simple two stroke power plants of yesteryear. Those of us who have grown up in the japanese two stroke. The secrets of resonance tuning in 2 stroke expansion. Ill try and get the ball rolling in here with a list of books i currently own on 2 stroke engines, and 2 stroke engine performance tuning. Bigger carburetors, higher compression ratios, altered port.
Basic 2 stroke tuning changing the power band of your dirt bike engine is simple when you know the basics. This site is like a library, you could find million book. Graham and a great selection of related books, art and. They are so simple and fun that ive always enjoyed tinkering with them. Clean the air filter sounds stupid, but you can be sure there are a lot of bikes at the races with expensive racing parts and a dirty air filter. The most common mistake is to choose the wrong combination of engine components, making the engine run worse than stock. There is a wealth of knowledge contained in this manual. Other books to his credit are modern engine tuning, two stroke performance tuning and forced induction performance tuning. Jennings book talks about port time area and porting the cylinder to have peak efficiency at a certain rpm.
The morbidelli 125 twin road racer is a rotary valve engine. Graham bell is an acknowledged expert on engine tuning, with many years experience in this field. It is my hope that this book will assist the enthusiast involved in motocross, enduro, desert, road or gokart racing to develop and tune his twostroke engine for. Diy cr250 engine porting honda 2 stroke thumpertalk. The information used in the programs calculations was taken from the books the basic design of the two stroke engine and the book design and simulation of two stroke engines. They are easy to work with and do not require excessive motor knowledge to achieve desired engine performance. Two stroke performance tuning available for download and read online in other formats. Since modifying the 2 stroke engines require not only a big.
Excellent reference material to make your bike faster. Mechanically, the twostroke engine is very simple, and unfortunately on. Discover delightful childrens books with prime book box, a subscription that delivers new books every 1, 2, or 3 months new customers receive 15% off your. Our specialist engine tuners will be able to help you with every aspect of your tuning and servicing. How to build, modify and power tune cylinder heads. Two stroke carburetors are perfect practice for novice mechanics. A graham bell first published more than 30 years ago and in continuous print ever since, this remains one of the most comprehensive references available to the enthusiast engine tuner and race engine builder. Loads of equations, fairly modern information, and an easy enough read for the mechanics out there who just now how to make there engines run, rather then how to make them better then when they came out of the factory.
Blair of queens university belfast, and published by the society of automotive engineers. Some of those serve no function at all while others do within certain limits. Changing the power of 2 stroke engine is really very simple when you know the basic techniques of 2 stroke engines. Im the engine and drivetrain design lead for my formula sae team so i have a lot of new members asking me how to learn more about engines so they can get involved with the technical parts of design. Geared specifically for gp and kart racers, this hardcover. Determine the level of porting you wish to achieve before you start cutting or grinding.
The website does not intend to compeed with any other website dealing with 2 stroke tuning, and the information shared is not at all as thorough as what you can get from reading the books. Decades have passed since i hung around with john and jim. Haynes two stroke perfect tuning two stroke performance tuning by a. Buy two stroke performance tuning 2nd edition by bell, a. Here you can download file a graham bell two stroke performance tuning. Graham bell is the author of two stroke performance tuning 4. Anyone interested in doing their own engine porting, or taking the time to learn the intimate secrets of 2 stroke. When discussing high performance automotive engines, a specific set of math formulas are used to develop and design power plants to make more power at higher rpm levels and still survive. There are a number of resonances that occur inside 2 stroke expansion chamber performance exhausts.
I think this book is the best book for 2 stroke engine builders and tuners to start out with. Researchers have found that it is the gases at the very outer limits of the combustion chamber, called the end gases, that selfignite to cause detonation. Twostroke performance tuning in theory and practice. An excellent academic book on the theory behind performance tuning for 2stroke motorcycles.
The difference in power between a dirty and clean filter is probably more than the difference in power between a stock and aftermarket pipe. The way a two stroke motor works causes them to be f. Other books to his credit are modern engine tuning, twostroke. I usually recommend this book along with gordon jennings two stroke tuners handbook, because this book has what the first one doesnt and vice versa. Performance tuning in theory and practice, four strokes by bell, a.
Read online two stroke performance tuning chapter 3 book pdf free download link book now. Good resources on cylinder porting and tuning in general include jennings two stroke tuners handbook, and two stroke performance tuning by a graham bell. There are many ways to boost the power, one of which is by installing a tuned pipe. I started reading these about a year ago now and ive learned so much in just the short time already its mind boggling. Geared specifically for gp and kart racers, this hardcover treasure has turned out to be a great reference source for questions on the logic and concepts that pertain to tuning a 2stroke for maximum performance. I usually recommend this book along with gordon jennings two stroke tuners handbook, because this book. All books are in clear copy here, and all files are secure so dont worry about it. Graham bells two stroke performance tuning is the book to have. Other readers will always be interested in your opinion of the books youve read. Fourstroke performance tuning in theory and practice a. Dependability, durability and race track proven 2 stroke cylinder porting come in 3 stages, we can set you up with a package or custom port a cylinder just for your application.
A reference book for the enthusiast engine tuner and race engine builder. Motorcycle tuning 4 stroke, second edition robinson, john on. A myriad of different aftermarket accessories is available for you to custom tune your bike to better suit your needs. To connect with two stroke performance, join facebook today. Forced induction performance tuning a practical guide to. Purchase the porting tools you need at our online store. Undoubtedly, the virtue which has most contributed to the widespread use and varied application of the two stroke engine is its mechanical simplicity. If you are a novice or beginner then this book is for you. Discussion in motorcycle talk started by galenernest, feb 4, 2011. Apr 25, 2012 ive spent a lot of time looking for a performance related book that reflected both real world ideas and understanding with a hint of engineering in the explanations and the four stroke performance tuning has met and exceeded what i thought was available. Geared specifically for gp and kart racers, this hardback treasure has turned out to be a great reference source for questions on the logic and concepts that pertain to tuning a 2 stroke for maximum performance. Graham bell author of fourstroke performance tuning.1451 303 234 1429 1356 824 1291 921 1404 117 138 534 471 1481 1253 1001 1343 1173 759 1472 724 233 218 950 488 1408 996 1393 553 274 1465 745 1521 293 202 408 282 170 1496 211 619 272 103 988