Running 1966 saab 96 3 cylinder project this 1966 saab 96 looks a bit rough and is sold without a title, however its triple carb three cylinder twostroke does run and the seller claims to have driven it around the block. Also i dont know guys if u have a tutorial for a proper cvt tuning here, if u want when i have little more time i can make one with everything explained. He is in my view a good candidate for reading due to his knowledge of vintage and modern 2 stroke piston port engines. I started reading these about a year ago now and ive learned so much in just the short time already its mind boggling. The mechanic who got lucky stan stephens autobiography 2020 edition republished with extra chapter after selling an amazing amount of copies of my book i completely sold out. For instance, if an engine has been properly designed for medium output and a midrange power peak, raising the. Jan 09, 2015 but there has perhaps never been a more motorcyclelike car engine than the old saab two stroke triple. The secrets of resonance tuning in 2 stroke expansion. Two stroke to turbo is a team of independent saab specialists in royston. Graham bell is an acknowledged expert on engine tuning, with many years experience in this field.
It had with 25 hp 19 kw, and a top speed of 100 kmh 62 mph. Pdf motorcycle tuning two stroke download full pdf. Graham bell second edition this is the moped performance tuning bible as far as im concerned. Saabsa saab twostroke engine swapped in motorcycle. I usually recommend this book along with gordon jennings two stroke tuners handbook, because this book. Lets journey back to 1973 and read the book that was the two stroke bible of that era. Any recommendations on a book i can go buy that covers 2 stroke basics, theory, repair, etc etc. Jun 25, 20 one of the most famous books on 2 stroke tuning. As a warning these books can be highly technical and possibly a bit dry to read. Very interesting book, lots of great insights and tidbits of knowledge even for those who dont plan to tune any two strokes any time soon. The only problem is finding his books due to them being discontinued and published only for a short period.
Buy twostroke performance tuning book online at low. Bells four stroke performance tuning book, this book goes into extreme detail regarding performance tuning a two stroke engine. Saab, spares, parts, tuning, workshop, breakers, maptun, saab spares, two stroke to turbo cars for breaking 93, two stroke to turbo, cars for sale, used cars for sale, services, mot testing in bassingbourn brake services in bassingbourn. An optional 2 barrel carb and tuned exhaust was also available. A simple 3 stage two stroke exhaust calculator based on formulas of g. Written in the early 1970s by cycle magazine writer and engine tuner extrordinare you can learn more about a 2 stroke engine from this book then you can imagine. We offer a variety of services, such as car body repairs in bassingbourn.
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. This is in my opinion, hands down the bible of 2 stroke engine tuning. They are so simple and fun that ive always enjoyed tinkering with them. To be honest, our testing so far has been somewhat inconclusive. And to an endless series of experiments, some of them illuminating and many others raising more questions than they have answered. Twostroke engine repair and maintenance paul dempsey. The car has been repainted, interior redone, and the car only needs some minor sorting to be complete. It was a bsa frame with 3cyl 2 stroke watercooled saab engine installed. Some books have indicated that indeed, too much squish velocity will induce autoignition in a two stroke engine. Get it if you want to squeeze peak performance out of your 2stroke engine. The first issue to address is jetting and carburettor tuning. The morbidelli 125 twin road racer is a rotary valve engine. Tuning 2 4 stroke tuning undertaken to customer requirements. The difference between the two stroke cycle engine and the four stroke cycle engine lies principally in the method of scavenging.
Undoubtedly, the virtue which has most contributed to the widespread use and varied application of the two stroke engine is its mechanical simplicity. Decades have passed since i hung around with john and jim. Race replica bike builds specializing in engine frame transplant 2 stroke race reps eg. It was used in the saabs 93, 94 sonett i, with an engine tuned to 57. Paul dempsey, the author, is a master mechanic and has written more than 20 technical books, so you know the information is genuine. Free shipping on many items browse your favorite brands. Ray pye dissatisfied of his motorcycle bsa rocket iii has decided to eliminate its original engine and replace it with the small two stroke engine. Vsaab articles page the vintage saab information source. Other than exact replacement oem carburetors, all mikuni aftermarket carburetors and tuning components are sold as is for off road racing use only and are not intended or approved for use on vehicles operated on public roads or in locations where applicable engine tampering and antipollution laws apply. If nobody else on here can step in with their experience, id suggest looking for sae papers on the subject. Everyday low prices and free delivery on eligible orders. Saab 96 sport 2 stroke bullnose v4 sonett gt 1964 1965 1966 gear lever shift nos. Those of us who have grown up in the japanese two stroke.
For introductory material on 2 stroke engines please see the following links. Other books to his credit are modern engine tuning, twostroke performance tuning and forced induction performance tuning. Open library is an open, editable library catalog, building towards a web page for every book ever published. Two stroke to turbo ltd saab garage in royston hertfordshire. This book is limited to the treatment of scavenging, as skill in design of scavenging is considered the key to successful two stroke cycle engines. Other books to his credit are modern engine tuning, two stroke performance tuning and forced induction performance tuning.
Motorcycle tuning twostroke 1994 edition open library. Free 2 stroke books banshee repairs and mods banshee. Twostroke performance tuning in theory and practice. For a 2 stroke engine the tuned pipe is the section of the exhaust system that begins at the exhaust port and ends at. There is a huge interest in vintage snowmobiles and their simple two stroke power plants of yesteryear. There is a wealth of knowledge contained in this manual.
Two stroke tuning book pdf scooter shack scooter forum. 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. The saab two stroke was a two stroke cycle, two cylinder, and later straightthree engine that saab based on a dkw design. Graham bell starts off by saying that he doesnt believe port time area and its all about the duration the ports are open. There are many ways to boost the power, one of which is by installing a tuned pipe. 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. 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. 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. Velosolex s 3800 2stroke tuning and engine design books.
I enjoyed the book, i was interested in getting a better understanding of 2 stroke tuning and this book has helped a lot. Tips on how to port a two stroke cylinder, what to donot do and how to do it right. Horsepower with the standard carb was 48, with the 2 barrel and tuned exhaust up to 57. This is a highly saught after book by motorcycle enthusiests. Some of those serve no function at all while others do within certain limits. A myriad of different aftermarket accessories is available for you to custom tune your bike to better suit your needs. A book for all interested in two stroke engines, their tuning and testing and in the intriguing problems of two stroke. Twostroke tuners handbook by gordon jennings pdf manual. A man named aaen olav aaen performance had some published work about piston port 2 stroke technology and performance. There are a number of resonances that occur inside 2 stroke expansion chamber performance exhausts. The newspaper hooniverse dedicated to the world of two wheels published an article definitely worth noting that we are sure will intrigue saab enthusiasts who love motorcycles there have been lots of bizarre accounts of bike engines swapped in cars, and car engines in bikes.
Jenning vs graham bell, 2 stroke tunning books motorcycle. If youve ever thought about futzing with the port timing of your scooters one cylinder engine or making your own performance exhaust for your dirtbike or tuning the carb on your go kart, this book is for you. Hey chris, im really sorry but when it comes to 2 stroke tuning i cant offer any help. When buying a two stroke, you must make a commitment to rebuild the car structurally and mechanically to insure years of safe enjoyment. This coefficient kh is called the horn coefficient, with typical values between one and two. Lets all get together and start a two stroke tuning thread that rivals others in the world, as, we are all kiwis, and as such have an amazing pedagree particularly when it comes to high powered racing two stroke.
Two stroke to turbo cars for breaking 93, two stroke to turbo, cars for sale, used cars for sale, services, mot testing in bassingbourn brake services in bassingbourn, affordable car body repairs, any parts available car body repairs, saab. Im pretty sure 2 stroke tuning has moved on since this book was written but still gives a good background in the basics, a lot of the examples seem. Contents chapter 1 introduction 9 chapter 2 the cylinder. The saab 96 might have been marketed as a new car when launched in 1960, but it was very closely related to the original superaerodynamic two stroke frontwheeldrive 92 that had on sale since 1949 and, which had proved to be such a massive breakthrough in design for the swedish carmaker. A typical state of the art four stroke carb is the kehin cr. The hard copy is actually out of print at the moment. Two stroke to turbo is a saab parts and service specialist with over 30 years in the industry. May 03, 2012 for those looking for a copy, found the complete nonscanned printers format manual online. Turbo and even supercharger setups of various configurations can be very useful, however, they are often more complicated with 2 stroke tuning than with 4 stroke applications on a tangent, i did witness a 50cc turbo 2 stroke bike that would do over 150mph, but i digress. He really talking abour a mixwre of fuel and oil if yoll rjchen rhe premix ratio 20. Anyone interested in doing their own engine porting, or taking the time to learn the intimate secrets of 2 stroke engines should take the time and read each of these books. 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. You can also save and load the data by using the provided functions.
Engineering acousticssonic supercharging of 2 stroke. Performance engineering 2 stroke tuning we specialise in honda 2 strokes, covering the cr range of motorcross bikes, the nsr250 street bikes, and hrc grand prix 125, 250, and 500s. The second type of saab two stroke engine was a longitudinally placed inlinethree cylinder of 748 cc 45. The inlet port opens 30 after bdc and closes 79 after tdc. Tuning and jetting honda, ktm, kawasaki, yamaha, suzuki, husaberg, husqvarna, tm, gas gas.
Buy twostroke performance tuning 2nd revised edition by bell, a. I know theres probably lots of info on the internet, but i want a book i can carry around with me and randomly read a section or two when i get to the straighter sections of i5. Two stroke motors are more efficient that four strokes for a few reasons. Fast forward 18 months and high pressure tuning is indispensable for getting the best out of man twostrokes. Small values of kh are best suited to grand prix engines with narrow power bands, larger. The two stroke engine its design and tuning 9780854291571 by draper, k. If you are a novice or beginner then this book is for you. 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. Two stroke horror stories invariably involve poorly maintained vehicles that often sit idle for months at a time. It perfectly describes details about 2 stroke motors and exhausts. The alexander bell book is the best there is out there. The piston crown opens and closes the exhaust and transfer ports.
Engine, turbocharger, rotary engine, torque, specific impulse, crankshaft, piston, two stroke engine, flywheel by books llc and a great selection of related books, art and collectibles available now at. Nov 11, 2010 reading the above books, its important to keep in mind that both authors porting generalizations refer to comparisons among fullydeveloped oldschool racing engines, and shouldnt be taken out of context for modification purposes. Jennings book talks about port time area and porting the cylinder to have peak efficiency at a certain rpm. Two stroke performance tuning two stroke all of these detonation triggers are virtually unavoidable, with the exception of excessive spark lead. Basic 2 stroke tuning changing the power band of your dirt bike engine is simple when you know the basics. The most common mistake is to choose the wrong combination of engine components, making the engine run worse than stock. 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. In an attempt to acquire that understanding i began a study of the highspeed, highoutput two stroke engine that has led to the collection of a minor library of text books and sae papers.
Two stroke cylinder porting tips watch this before you. Four stroke carbs need to atomize the fuel more so than a two stroke carb because so much of the fuel shears along the intake port and separates from the mixture stream. Running 1966 saab 96 3 cylinder project this 1966 saab 96 looks a bit rough and is sold without a title, however its triple carb three cylinder two stroke does run and the seller claims to have driven it around the block. But there has perhaps never been a more motorcyclelike car engine than the old saab two stroke. Motorcycle tuning twostroke motorcycle tuning in this well established book, now brought up to date in a second edition, the technical editor of performance bikes shows you how to evaluate your engine. It would be nice to move this in to the mainstream section of this site, and i hope we can do this shortly, however, good things take time, and some cooperation is needed. A bible for building a high speed and high power 2 stroke machines. Detailing for any one interested in increasing the performance of their machines. An excellent academic book on the theory behind performance tuning for 2 stroke motorcycles. Graham bell takes readers through the various modifications that can be made to a two stroke and its components in order to derive maximum useable power and mechanical reliability. Alexander bell has a couple other fantastic books out titles four stroke performance tuning and forced induction performance tuning. Ive simply never had any experience with 2 stroke engines and have never had any reason to do my own research into their tuning. The way a two stroke motor works causes them to be f. It covers history, physics, engineering and practicum for the development and refinement of high performance two stroke engines.
But these changes will increase the power only if you know what you are doing. Four stroke carbs have more jets and finer adjustment screws, plus they usually are equipped with an accelerator pump. Motor cycle tuning two stroke by robinson, john, 1994, newnes edition, in english 2nd ed. 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. Although there is really no shortage of books on the subject of 2 stroke tuning and preparation, i knew that an active software programme would be able to offer so much more. Vintage saab sonett singing on dyno two stroke youtube. Yes i know about this book, a lot of stuff to learn and explained properly.