It is hosted as a service to vintage saab drivers and enthusiasts worldwide. They are so simple and fun that ive always enjoyed tinkering with them. This one happens to be a swedish triple car, though the motor is currently waiting for reinstallation following a rebuild. Two stroke performance tuning chapter 3 porting and cylinder scavenging today, when we take a look down the cylinder of a twostroke engine, we find its walls literally filled with ports to handle the induction, transfer and exhaust phases of gas flow through the engine. Twostroke principles although a twostroke engine has less moving parts than a fourstroke engine, a two. Saab hybrid two stroke crankshaft tom donney motors. Saab made some 1500cc two stroke three cylinder cars. Bells fourstroke performance tuning book, this book goes into extreme detail regarding performance tuning a twostroke engine. Two stroke performance tuning two stroke all of these detonation triggers are virtually unavoidable, with the exception of excessive spark lead. Saab two stroke crankshaft issues and fixes youtube. A narrow port reduced power but improved reliability. Two stroke to turbo is a team of independent saab specialists in royston.
It is not made to original specs and has several modifications. Performance engineering is a division of gt motorcycles, plymouth. Saab had scheduled to run a twoyear trial with 70 epower demonstrators in sweden by late 2011. Todays nice price or crack pipe saab 96 is a rare 2stroke and that in itself may be pretty exciting, just as long as its price doesnt prove. The old adage of stuffing cases on every project just isnt true any more. A new battery has been fitted and the car runs and drives well. Saab two stroke head gaskets for 750cc and 850cc bullnose and longnose. 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. Buy twostroke performance tuning 2nd revised edition by bell, a. Dec 07, 2015 with a twostroke, threecylinder engine, this 1968 saab 96 isnt your normal car. Then you need our book cooling it includes how to trouble shoot, fix, and.
I would like to ask however, how many of you used the saab twostroke oil in your twostroke saab engine. Jan 09, 2015 but there has perhaps never been a more motorcyclelike car engine than the old saab two stroke triple. Lets journey back to 1973 and read the book that was the two stroke bible of that era. In motocross its usually a compromise between best peak hp and good early off the pipe power. The faliure of the 50 mph trike was most likely not caused by wear and tear on the engine, or even damaged parts, but by a simple mistake in the tuning process.
An excellent academic book on the theory behind performance tuning for 2 stroke motorcycles. Automotive components in bassingbourn 2 stroke saab. Graham bell second edition this is the moped performance tuning bible as far as im concerned. Bodywork will need attention, but provided serious rust is limited this could be a really cool project for very little cash. 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. 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.
There are different phases taking place in the crankcase and in the cylinder bore at the same time. Those of us who have grown up in the japanese twostroke. 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. Other books to his credit are modern engine tuning, twostroke performance tuning and forced induction performance tuning. Parts for sale for vintage saabs tom donney motors. Two stroke to turbo is a saab parts and service specialist with over 30 years in the industry. Saab stroke for sale in uk 12 secondhand saab strokes.
Attention is needed to the paintwork which has blistered badly. Pdf motorcycle tuning two stroke download full pdf. Contents chapter 1 introduction 9 chapter 2 the cylinder. 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. Saab enthusiasts from sweden tried to make the old saabs 2stroke 850cc engine added turbo charger dalomracing crew trying to add turbo and kjetronic in a saab 2 stroke 850cc engine from from 1966. The saab 96 is an automobile manufactured and marketed by saab from 1960 to january 1980, replacing the 93. Bells four stroke performance tuning book, this book goes into extreme detail regarding performance tuning a two stroke engine.
Saab tuning guide maptunusa tech tuner eurotuner magazine. In a one, two, or threecylinder engine there are times when no power stroke is occurring. Graham bell starts off by saying that he doesnt believe port time area and its all about the duration the ports are open. Parts catalogs brochures and ephemera contact us parts catalogues. 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. 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. When buying a two stroke, you must make a commitment to rebuild the car structurally and. It was a bsa frame with 3cyl 2 stroke watercooled saab engine installed. A taller port restored lost power but made the power band unacceptably narrow. I dont know if other clubs might have made reprints of the english edition.
Rare saab v4, two stroke which you can see in the attached pictures. We run these at bonneville with up to 181 compression ratios and over 200psi compression without issues. We offer a variety of services, such as car body repairs in bassingbourn. The engine is a threecylinder, liquidcooled, twostroke engine em ploying the. Graham bell is an acknowledged expert on engine tuning, with many years experience in this field. I bought this saab about 3 years ago with the intent of restoring it, i have since moved and my priorities have changed and this is a nice car and i didnt want to see itdeteriorate. Two stroke to turbo ltd saab garage in royston hertfordshire. The straightfive engine or inlinefive engine is an internal combustion engine with five. Two stroke horror stories invariably involve poorly maintained vehicles that often sit idle for months at a time. This video talks about the head bracket that causes issues and also talks about new upgrades coming for saab two stroke 3 cylinder crankshafts. This site is a free service with documents provided by members of the saab community. Saabmonkey saab parts repair and restoration in massachusetts. The saab twostroke has been around for well over forty years in different configurations.
Motorcycle tuning two stroke available for download and read online in other formats. The engine started and sounds great, but there is no information whether it is mounted in a saab. Ever wish you had more monte carlo or gt crankshaft ever wish you had more horsepower and torque pouring out of your old saab two stroke what if i told you could have both. Vsaab articles page the vintage saab information source. Nov, 2011 1961 saab 96 2 stroke with simons sport exhaust, polished early 96 inlet, tuned carburetor and 65 airfilterhousing. Saab two stroke engine 1961 64 for sale car and classic. This rare book is a classic and a must have for any saab. Bigger carburetors, higher compression ratios, altered port timings and expansion. Theyre all covered in this unique book, dkw, saab, wartburg, barkas, framo, trabant, suzuki, subaru and more.
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. Worlds largest 2 stroke engine showing 5 of 35 messages. Two stroke performance tuning twostroke all of these detonation triggers are virtually unavoidable, with the exception of excessive spark lead. Decades have passed since i hung around with john and jim. Many frame parts will fit the 2stroke models as well.
Everyday low prices and free delivery on eligible orders. If your monte carlo is two stroke you would need the workshop manual for two strokes. That is how a two stroke engine completes a power cycle in only 360 degrees of. If you are interested in purchasing a copy of this book for your own reference, please click on the link image of the book below. Two stroke motors are very touchy in the tuning process, if they run too rich, they bog down and quit. These pistons have armorglide coating on the skirts. 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. Any violations will be removed at the request of the author.
We specialise in hrc nsr500v, rs250, rs125, and nsr250. There are many ways to boost the power, one of which is by installing a tuned pipe. The saab two stroke has been around for well over forty years in different configurations. Download pdf motorcycle tuning two stroke book full free. Once properly restored, a two stroke is reliable and a pleasure to own.
Fire rings in bore sizes up to 75mm quality gaskets made is the usa by cometic. The saab twostroke was a twostroke cycle, two cylinder, and later straightthree engine that. Two stroke performance tuning back in europe two stroke engineers were battling excessive ring and cylinder wear, due to the exhaust port width being too great. I have had this twostroke 1964 saab 96 sedan for several years and been restoring it on and off. Start up of saab tuned three cyl two stroke engine youtube. Aug 17, 2015 saab enthusiasts from sweden tried to make the old saabs 2stroke 850cc engine added turbo charger. Saabsa saab twostroke engine swapped in motorcycle.
The 96 featured aerodynamic two door bodywork, four passenger seating and at first a two stroke, threecylinder engine, later a four stroke v4. Here is an excerpt from the book the spirit of saab. Jennings book talks about port time area and porting the cylinder to have peak efficiency at a certain rpm. There is a wealth of knowledge contained in this manual. Bodywork will need attention, but provided serious rust is limited this could be a really cool project for. There is a huge interest in vintage snowmobiles and their simple two stroke power plants of yesteryear. Lets face it, saab sold tens of thousands of two strokes to be used as daily drivers for almost two decades. In 1966, saab introduced a modified twostroke engine with higher performance.
Two stroke principles although a two stroke engine has less moving parts than a four stroke engine, a two stroke is a complex engine because it relies on gas dynamics. The twostroke engine is a common power source for small. Saab hybrid twostroke crankshaft summer 2015 this article is for two stroke owners only. The global cycling network puts you in the centre of the action. How saab would make a piston today high performance pistons made with a forged 4032 aluminum alloy which is designed specifically for twostroke engines. Scavenging ports optimal design of a twostroke small. Mar 18, 2010 the conventional saab turbocharged cars such as the 900, 93 and 9000 offer 150210hp from the factory, with tuning potential comparable to the vwaudi 1. His port time equations dont even include rpm, you input the dime. Finding a fully original example is becoming increasingly unlikely as time goes by and most have become combinations of bits and pieces from various model years anything to keep em running. Dynojet rolling road setupfor all makes and models of 2stroke. The trend in high performance two strokes has continued towards more case volume, however each engine and application differ.
Saab club of finland sells a reprint of the finnish language edition of the v4 workshop manual 1967 to 1980. In the model tuning tips chapters of this book, all the head specs quoted have msv ratings designed for the intended power band changes. Undoubtedly, the virtue which has most contributed to the widespread use and varied application of the two stroke engine is its mechanical simplicity. Driving in the rocky mountains means driving far above the 20. 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. The way a two stroke motor works causes them to be f. But there has perhaps never been a more motorcyclelike car engine than the old saab twostroke triple. Below please find service manuals for later, long nose saab 95 and 96 models of the twostroke variety. The new owner of the saab estate, national electric vehicle sweden, initially stated that they intended to start producing the allelectric 93 epower to be launched in china by late 20 or early 2014. Driving in the rocky mountains means driving far above the.
We wanted to give you a glimpse at what the swedish manufacturer saab has to offer so weve compiled this saab tuning guide thanks to maptunusa. The saab twostroke was a twostroke cycle, two cylinder, and later straightthree engine that saab based on a dkw design. Dalomracing crew trying to add turbo and kjetronic in a saab 2 stroke 850cc engine from from 1966. Saab two stroke subscribed to a channel 4 months ago global cycling network channel. Saab in motor sports since 1949 tunberg, anders on. Vscna, saab cars, saab clubs, rmsc and sponsors, and the. Vintage saab two stroke race car with crazy swede driving. 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. 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. It had with 25 hp 19 kw, and a top speed of 100 kmh 62 mph.