Two stroke engine was a saab oddity and persisted until 1966. Once you understand the basic functionality of one 2 stroke carburetor, you can. The car is located in lima, peru and i can send it anywhere of the world with aditional engine of spare. Basic 2stroke engine tuning information joe hunt rc. The reason the trikes motor blew up, was because it was.
Squish measurement and adjustment on 2 stroke engines. Get the best deals on vintage parts for 1 96 6 saab 96 when you shop the largest online selection at. 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. Two stroke to turbo is a team of independent saab specialists in royston. Differences in two stroke and four stroke carbs the difference between a two stroke and four stroke engine is intake velocity. Graham bell is an acknowledged expert on engine tuning, with many years experience in this field. There are many ways to boost the power, one of which is by installing a tuned pipe.
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. A myriad of different aftermarket accessories is available for you to custom tune your bike to better suit your needs. Saabsa saab twostroke engine swapped in motorcycle. 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. Two stroke engines have lower velocity so the needle jet has a halfmoon shaped hood protruding into the venturi to produce a low pressure area that aids in drawing the fuel up through the needle jet.
Reviewed in the united states on november 20, 2014. Other books to his credit are modern engine tuning, twostroke performance tuning and forced induction performance tuning. In this well established book, now brought up to date in a second edition, the technical editor of performance. We run these at bonneville with up to 181 compression ratios and over 200psi compression without issues. While inspecting a saab 96s bodywork, pay attention to the condition of the front valance, especially around the corners where the panel meets the front wings. 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 is a wealth of knowledge contained in this manual. Two stroke performance tuning two stroke all of these detonation triggers are virtually unavoidable, with the exception of excessive spark lead. Two stroke to turbo ltd saab garage in royston hertfordshire. How to tune your carb carburetor tuning tips and tricks. The way a two stroke motor works causes them to be f. Detonation is devastating because of the extra piston heat incurred going.
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. There is a huge interest in vintage snowmobiles and their simple two stroke power plants of yesteryear. Two stroke performance tuning volume of the cylinder with the piston at tdc figure 2. I made this video long ago, but forgot to upload it. The most common mistake is to choose the wrong combination of. 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.
In 1966, saab introduced a modified two stroke engine with higher performance. The durability of the design has been proven in scca road racing where the v4 engine has raced problem free for several seasons in our dsport race car. Parts for sale for vintage saabs tom donney motors. Mat people had no prior experience with two stroke saab engines but did the job anyways. Simple twostroke cylinder porting tutorial youtube. Im owner of a saab 96 two stroke and i need to sell it. 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. As a general reference point, or when installing a distributor, top dead center tdc on the compression stroke is. There is the personal side of my life, injuries, marriage, tragedies, getting old. Saab 96 sport 2 stroke bullnose v4 sonett gt 1964 1965 1966 gear lever shift nos. Ray pye dissatisfied of his motorcycle bsa rocket iii has decided to eliminate its original engine and replace it with the small twostroke engine used by saab on his 96. Fire rings in bore sizes up to 75mm quality gaskets made is the usa by cometic. 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.
Still not the highest level which would be possible with a 90cc twostroke of. We offer a variety of services, such as car body repairs in bassingbourn. Vintage saab sonett singing on dyno two stroke youtube. Ground the spark plug by making contact between the spark plug and the cylinder fins. This 2 stroke carb tuning guide will give you all the information you need to tune your 2 stroke carburetor for peak performance, no matter the make or model. Squish is an effect in internal combustion engines which creates sudden turbulence of the fuelair mixture as the piston approaches top dead center tdc. The engine had 3 carburettors and to reduce smoke, a common complaint from many owners of earlier cars with 2 stroke engines, the fueloil mixture ratio was lowered from 3% to 1. Montecarlo, and standard motors suffered from detonation in the 1960s and do now the 1990s. Tuning by aalt toersen using ftt ultrasap ignition, ftt exhaust calculation and. As it turned out mat had restored a saab 96 sport engine for a customer from monaco just the engine, rest of the car was done in monaco.
So, a piston can be at top dead center tdc on the compression stroke and on the exhaust stroke. Saab two stroke head gaskets for 750cc and 850cc bullnose and longnose. Minimal changes only driven by modifications and perfomance upgrades. You should read about how the two stroke enigne works before you.
Two stroke motors are very touchy in the tuning process, if they run too rich, they bog down and quit. Twostrokes use the same principles, but the intake side is not tuned. Saab two stroke motors are extremely high performance motors and they required premium fuel. Lets journey back to 1973 and read the book that was the two stroke bible of that era. They are so simple and fun that ive always enjoyed tinkering with them. Top dead center tdc for any internal combustion engine refers to. They had sent the engine to finland to be restored. Check if spark is being generated from the spark plug. The unique v4 engine design combines light weight with the strength to take the punishment of the most demanding conditions. Gathering of the saab 2stroke machines in hedemore october 17, 2017 october 17, 2017 no comment famous automobile magazine bilsport meaning autosport in english published in karlskrona, sweden gathered a large number of good old saab machines last month.
In general, this car needs restoration and if someone enthusiastic in this class of car is interested please contact to me. Lennart olars with his saab 96 2 stroke 2 cycle on song in skepptuna, 2004. Basic 2 stroke tuning by eric gorr changing the power band of your dirt bike engine is simple when you know the basics. Those of us who have grown up in the japanese two stroke. Start up of saab tuned three cyl two stroke engine duration.
I cover the bikesport of my two sons, harley and garry, their stories most fathers will associate with, the highs and the lows and them never going to be the next dougie lampkin or valentino rossi. Long before turbocharging, keys in the floor and couchswallowing hatchbacks, the hallmark of saab was the ringdingdingding of its twostroke engines. Top dead center tdc when the piston is at the top of its. By david lachance from the march 2010 issue of hemmings motor news. So, if you grew up around motorcycles, your brain might associate two stroke with the warmth of family, the pride of winning a race, or the satisfaction of tuning a. We create high performance parts for 2 stroke race engines, based on our many. Not only are twostrokes and triple cylinder arrangements much more for bikes than cars, but the 841cc capacity was much more appropriately sized for a bike than even a small, light car like the saab. Graham bell steers you through the various modifications that can be made to coax. Buyers guide saab 96 all the info from twostroke to v4.
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