4 stroke motocross engine tuning software

In this cycle there are 4 different strokes, they are 1. The engine produces a maximum of some 34 kw 46 hp power. The modern race bike requires precise tuning, knowledge, and expertise to unlock all possible power, ride characteristics, and delivery of power. Specifically designed for motocross, motard,enduro and atv. You can feel the difference with an hp four stroke immediately. 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. Stroking a fourstroke engine also increases the displacement making the bike illegal for ama pro racing. To stroke an engine, a tuner relocates the bigend bearing further. The cost to convert this program into a full windows program like our dynomation5, four stroke simulation would prevent it from ever being released. We specialise in honda 2strokes, covering the cr range of motorcross bikes, the nsr250 street bikes, and hrc grand prix 125, 250, and 500s. The problem is that if i were to get a 125cc 4stroke it would be barely kicking out more power than my old aprilia rs50, which was tuned to the point it did 80mph.

Andy wigan fuel injection first appeared on a production dirt bike way back in 2002, and a greater majority of latemodel four stroke motocross and endurotrail bikes now uses the technology. The objective of tuning is to improve the volumetric efficiency of the engine. With the experience or the simulation you can determine the new timings and the new maximum lift, but what remains problematic is the determination of the lift law and of the cam profile, this to maximize the volumetric efficiency and in the meantime check out the valve. While twostroke engine development is on the rise again, the worldwide interest in a professional twostroke engine simulation is still limited. 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. Welcome to sct racing engines established since 1990. The technically correct term is actually four stroke cycle. Sct racing engines provide a complete engine overall service on all two four stroke motocross atvs and enduro bikes. We offer trackside testing for both engine tuning and efi mapping, as well as. This is the biggest difference between the 2 stroke verses 4 stroke dilemma.

The piston crown opens and closes the exhaust and transfer ports. 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. This fully revised and updated edition is one of the. Four stroke motocross and offroad performance handbook motorbooks workshop gorr, eric on.

You probably know that octane is not the makeit or breakit number when it comes to choosing race gasand. Knowing how to choose the right type of racing fuel for your bike can be confusing. Carburettor tuning for performance part 1 the challenge youtube. It is written specifically for megasquirt or megasquirtii efi users who are new to tuning engine with a programmable controller, and tries to make very few assumptions about what you already know.

A four stroke also fourcycle engine is an internal combustion ic engine in which the piston completes four separate strokes while turning the crankshaft. The four stroke engine was first demonstrated by nikolaus otto in 1876 1, hence it is also known as the otto cycle. As we all know that there are mainly three steps involved in any internal combustion engine 2 stroke or 4 stroke i. Learn the seven things you can do to keep your four stroke dirt bike tuned properly and giving you the performance you want ride after ride. In motocross its usually a compromise between best peak hp and good early off the pipe power. With that we have categories that cover most riders. Contents chapter 1 introduction 9 chapter 2 the cylinder. Graham bell is an acknowledged expert on engine tuning, with many years experience in this field. Rmzs can also be further modified with yoshimuras mx tuner.

No previous knowledge of the twostroke cycle engine is required just input the. With the experience or the simulation you can determine the new timings and the new maximum lift, but what remains problematic is the determination of the lift law and of the cam profile, this to maximize the volumetric efficiency and in the meantime. Building a high quality engine requires a combination of stateoftheart equipment and experienced, knowledgable technicians. Get introduces a new range of performance ecus for the electronic. A yamaha yz400, 5valve, 4stroke cycle, motocross racing, motorcycle engine is instrumented to provide pressure diagrams in the exhaust system which are recorded over the usable engine speed range at full throttle from 5000 rpm to 1 rpm. Those of us who have grown up in the japanese twostroke. The difference in power between a dirty and clean filter is probably more than the difference in power between a stock and aftermarket pipe. For example, a cc engine may produce 125 hp in stock form and 175 hp after race tuning. As we all know that there are mainly three steps involved in any internal combustion engine2stroke or 4stroke i. The four stroke is just smooth tractor like power right off idle all the way upstairs. Millions of fluid and thermodynamic calculations are made by mota representing the conditions inside your two stroke engine throughout its complete operating cycle. But in order to get a lot of horsepower out of that two stoke engine they still have a certain amount of hit to the power band. If they tune stock ecus what software and tuning tool is used. The four stroke engine is probably the most common engine type nowadays.

The daimler reitwagen used a hottube ignition system and the fuel known as ligroin to become the worlds first vehicle powered by an internal combustion engine. Harris performance engineering hp race development. Stc racing engines our services motocross engine tuning. Hp is a full on specialist in ecu tuning 2 and 4 stroke, cdi development for 2 strokes, and general mapping needs. Motorcycle, chainsaw, personal watercraft, model aero and most similar engines. 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. I think all of those bikes are more commuters than sporty especially the excessively heavy comet. Great book for those of us who like to really get nitty gritty with their engine tuning. We modify and tune all kinds of engines, car or bike, 2 stroke or 4 stroke.

Today, 4 strokes have become the mainstream choice in the top categories of motocross all around the world. How do performance bike shops dyno tune after engine builds or modifications. No previous knowledge of the two stroke cycle engine is required just input the required data and then run mota to set in motion this powerful process. 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. How to break in your nice new 4 stroke engine raysshop. This may help you understand just how your performance mods and tunings. Engine in which piston completes the cycle in 4 complete rotation of the crankshaft. It is very beneficial to begin by understanding the way a four stroke engine works. The is an introduction to tuning with a programmable electronic fuel injection ecu. The staff at race tech has over 65 years of championshipwinning engine building and tuning experience formally educated by the worlds most renowned engineers.

Ecu remapping, software for crf250 and 450, kx250 and 450, rmz 250 and 450. Matt norris engineering, based in buckinghamshire, a professional engine builder specialising in 2 and 4 stroke engines with 26 years experience in racing engines up to f1 level and specialising in motocross including bike preparation. There is no such thing as the average vintage 2cycle bike or rider. Fourstroke motocross and offroad performance handbook motorbooks workshop. Mota software, 2 stroke engine simulation software, 2 stroke exhaust design. Mar 16, 2012 stroking a four stroke engine also increases the displacement making the bike illegal for ama pro racing. A 15 year old kid with a fake birth certificate pitching in the little league world series a heavyweight who falsified his weight fighting in the ring with a light heavy. Oct 21, 2017 6 excel spreadsheets for designing an expansion chamber, a heads squish band, a boost bottle, a balanced crank, correct fueloil ratio, and correct port dura. Your fourstroke engine requires fresh oil constantly if you want it to treat you right. Today, 4strokes have become the mainstream choice in the top categories of motocross all around the world. Knowing the category of rider you are helps to choose the right modifications to best suit your riding and budget needs. How to tune your carb carburetor tuning tips and tricks. Although there is really no shortage of books on the subject of 2stroke tuning and preparation, i knew that an active software programme would be able to offer so much more.

Trail riding and easier use require lessfrequent oil changes. Most engines are fitted with exhaust manifolds that collect all the gases from a bank of cylinders. Yamaha also applied its 4 stroke technology in developing the yz400f production motocrosser, releasing it on the market in 1998 and instantly changing the face of the motocross scene worldwide. Mx zone motocross engine tuning, dyno tuning centre, serdi valve seat cutting, 4 stroke tuning, melksham wiltshire 01225 791182.

Software for fine tuning and design of four stroke engine by. Here we will discus few easy to implement scientific techniques to increase power and performance of your 4stroke machines be it a commuter or an already sportbike. Mar 12, 2008 hi, im looking at buying a nice little 4 stroke for my first bike just to act as a commuter and to get my experience up. Other books to his credit are modern engine tuning, two stroke performance tuning and forced induction performance tuning. Tune your car, motorcycle, lawnmower, rc model, chainsaw etc. Its a best practice to change the crankcase oil after every three hours or so of racing. The four strokes of the cycle are intake, compression. This video is about howto tune your get ecu equipped dirt bike. Hi, im looking at buying a nice little 4stroke for my first bike just to act as a commuter and to get my experience up. There is no 2 stroke displacement limit for our software, for example you can have a 125, 250, 500, 700 singlecylinder and our modules will work flawlessly. Nonetheless, there remains a lot of scepticism about the reliability of efi systems and the durability of their componentry. How to adjust idle on 4 stroke dirt bikes fuel screw adjustment duration. In other words, the engine will, after tuning, produce more power from the same displacement.

Mar 10, 2017 knowing how to choose the right type of racing fuel for your bike can be confusing. Race tech uses a motorcycle specific boring bar to bore 2 or 4 stroke steel sleeved cylinders. After this procedure, your engine will be broken in properly. For manufacter and tuner of four stroke engine, ntproject has developed a series of software to help in the development of the engine and its components from the optimization of the engine head, at the studied of the cams, at the sizing of intake and exhaust manifolds, until to the balance of the crankshaft, thanks at our software you could optimize your engine and to develop new components. Been involved in the car scene for many years and a great tuner is worth his weight in gold. So, while the physics of gases in motion will apply there, tuning for the exhaust pulse will not. Unlike formula 1 or road racing exhaust pipes, a fourstroke pipe has to. The morbidelli 125 twin road racer is a rotary valve engine. Twostrokes were easy to hopup, not so with a fourstroke.

Your four stroke engine requires fresh oil constantly if you want it to treat you right. The trend in high performance two strokes has continued towards more case volume, however each engine and application differ. Howto tune your get ecu equipped dirt bike youtube. How to increase performance of 4stroke motorcycles. Whatever the tuning needs are for your bike daytuner are more than qualified and experienced enough to do it. These parts also fit on ktm twostrokes and function the same. Fourstroke motocross and offroad performance handbook. Theres little point in going out to buy a 4 stroke with the intention of tuning if you got even half way to a 2 strokes power its going to be a hell of a lot less reliable than the 2 stroke. I want to let you know now that this is not hard to do. The company owner is a rider of over 30 years, and still a performance coach to this day. To stroke an engine, a tuner relocates the bigend bearing further outboard on the crank. Read this document before reading the applicable tuning. Yamaha also applied its 4stroke technology in developing the yz400f production motocrosser, releasing it on the market in 1998 and instantly changing the face of the motocross scene worldwide.

Fourstroke motocross and offroad performance handbook motorbooks workshop gorr, eric on. Gpx is a plug and play ignition control unit for carburettor 2 and 4stroke singlecylinder engines. The problem is that if i were to get a 125cc 4 stroke it would be barely kicking out more power than my old aprilia rs50, which was tuned to the point it did 80mph. Four stroke motocross and offroad performance handbook motorbooks workshop. Work to include port cylinder head, deck height of cylinder checked and altered if needed dependent on which engine you have, high compression piston, cam reprofiled or aftermarket one used, valve spring kit if needed, ecu mapping or carb boring, we use only the very best parts in our engine preparation. Twostroke waveaction engine simulation motion software. From a 49cc racing engine, to a gp 125 engine, or a 1500 mercurial triple engine, or a 250 kart engine, racingsm software suits all. From the optimization of the engine head, at the studied of the cams, at the sizing of intake and exhaust manifolds, until to the balance of the crankshaft, thanks at our software you could optimize your engine and to develop new.

A stroke refers to the full travel of the piston along the cylinder, in either direction. And for the love of all that is good in the world, use good oil. Oct 24, 2017 10 ways to gain power in a 2 stroke engine for free. How to keep your fourstroke dirt bike tuned in 7 steps. Bigger carburetors, higher compression ratios, altered port timings and expansion. Fuel injection first appeared on a production dirt bike way back in 2002, and a greater majority of latemodel fourstroke motocross and endurotrail bikes now uses the technology. With the ability to program all the functions of an ecu then there are. Race tech provides quality, precision engine services using the best equipment and processes in the industry. Fi has become the preferred way to deliver fuel on fourstroke motocross and offroad motorcycles.

The heart of our test bed is the very latest state of the art dynojet motorcycle 178 load control dynanometer with torque module for real time power results. Motocross racers have not embraced different cam shapes, but this will change. Software for optimal setting and design of engines and. To stroke an engine, a tuner relocates the bigend bearing further outboard. 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. 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.

Motorcycle tuning 4 stroke, second edition robinson, john on. We offer trackside testing for both engine tuning and efi. The illustration below covers the four stages of a four stroke engine. Here we will discus few easy to implement scientific techniques to increase power and performance of your 4 stroke machines be it a commuter or an already sportbike. The tips in this video can be applied to most carburetor equipped vehicles and tools. Here, we are going to consider the different aspects of tuning an engine for competition, as in raceperformance tuning. Software for fine tuning and design of four stroke engine. Maya programming software tool that allows full configuration of the get ecu. Both get and vortex have long histories in the electronic bike tuning game. The inlet port opens 30 after bdc and closes 79 after tdc. A balanced and blueprinted engine racing against totally stock engines. One of the main actions of preparation and development of a 4stroke engine consists in the modification of the camshaft.

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. Unlike formula 1 or road racing exhaust pipes, a fourstroke motocross bike has to. Dec 28, 2017 but in order to get a lot of horsepower out of that two stoke engine they still have a certain amount of hit to the power band. This applies to motorcycle, car or automobile engines. A bored and stroked engine actually displacing more cc than the class it is racing in. Dyno centre mx zone motocross engine tuning, dyno tuning. A yamaha yz400, 5valve, 4 stroke cycle, motocross racing, motorcycle engine is instrumented to provide pressure diagrams in the exhaust system which are recorded over the usable engine speed range at full throttle from 5000 rpm to 1 rpm. Fi has become the preferred way to deliver fuel on four stroke motocross and offroad motorcycles.

In 1885, they produced the first automobile to be equipped with an otto engine. The cost to convert this program into a full windows program like our dynomation5, fourstroke simulation would prevent it. A highperformance motorcycle in competition must use a silencer muffler by regulation. For manufacter and tuner of four stroke engine, ntproject has developed a series of software to help in the development of the engine and its components. One of the main actions of preparation and development of a 4 stroke engine consists in the modification of the camshaft. Two stroke motors are very touchy in the tuning process, if they run too rich, they bog down and quit. The way i break in a new or rebuilt 4 stroke engine is with heat cycles. Other books to his credit are modern engine tuning, twostroke performance tuning and forced induction performance tuning. Software for optimal setting and design of engines and racing.