2 stroke engine porting software

Our goal is to achieve the biggest power gains as possible, while maintaining reliability on your 2 stroke engine. Porting and polishing will dramaticly increase the response of engine. Position the red slide switch, located to the left of the displays, in line with. I was reading a thread about a 2 stroke versus a 4 stroke and it occurred to me that if the porting, or timing, of a 2 stroke could be changed, that maybe its maximum torque range could be lowered to an rpm comparable to the 4 stroke, and thus swing the same prop as the 4 stroke.

Two stroke design software the following are spreadsheets for different aspects of 2 stroke designmodification. Mota software, 2 stroke engine simulation software, 2 stroke exhaust design. Part of the problem is understanding the pulse or charge nature of the airflow in a 2stroke engine. Its called crankcase independent twostroke cits and was invented by former south african motorsport engineer basil van rooyen, director of cits engineering, st ives. Bimotion 2stroke software has been commercially available and in professional use since 1991. Main reason for wanting the software is to play with the port timing.

A typical ktm 2 stroke from the factory will easily do 210 psi and pound out plenty of torque more than a 250 or 300cc 4 stroke could ever hope for. He says advantages over fourstroke are that the cits. Changing the power of 2stroke engine is really very simple when you know the basic techniques of 2stroke engines. Support racingsm by subscribing our youtube channel. This kit is one of the best options for doing mx and dirt bikes of the 100cc, 80cc, 70cc, 50cc, and even down to 30cc, 2 stroke variety. Pipes, silencers, carburetors, reeds and valves are all popular bolton modifications. An engine port is an open window in the cylinder wall for the intake or exhaust of fuel mixture airgas. Softengine dynamometers and engine simulation software. Many things will affect the power delivery of twostroke motorcycle engines. Moreover, interest factors like the port parameters are computed even if the. This is the third of a series of videos on the topic of 2 stroke engine. Mota for windows slide show of features millions of tuning variations possible. Mspec twostroke performance services millennium tech.

Basic 2stroke engine tuning information joe hunt rc. The tsr software does take a bit more knowledge of engine theory and operation than the race logic templates do of course. Improve the performance of your two stroke engine with a torqsoft designed exhaust system. There is one or more forwardlocated exhaust ports, two or more side transfer ports, and one rear intake port. Those of us who have grown up in the japanese twostroke. For port work, one company that will help you is 2strokeporting. Porting and polishing twostroke motorcycle engines. A sydney engineering company has developed a new twostroke engine that they believe could be used in motorcycles.

Porting and trenching two stroke engine cases duration. 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. Unless you have a deep passion for twostroke tuning, are willing to spend money on software and porting equipment, and are comfortable throwing away botched cylinders, i would recommend having a reputable professional carry out any desired port modifications. We have the optimum case modifications to suit each application and engine developed over countless hours. Apr 08, 2007 the tsr software does take a bit more knowledge of engine theory and operation than the race logic templates do of course. If you are aiming for these qualities, modifying your 2stroke engine is a great strategy. We shall send you a pdf document with the templates for manufacturing your exhaust. Neat little 2stroke transfer porting drillpress machining. In a two stroke engine, the end of the combustion stroke and the beginning of the compression stroke happen simultaneously, with the intake and exhaust or scavenging functions occurring at the same time. Porting and polishing two stroke motorcycle engines. If you keep your compression high and do not go crazy on your exhaust timing, you can get plenty of torque out of a.

The software does complete cycle simulation of the whole internal combustion process including the gasdynamics in the pipesducts, ports and plenums air boxes, boost bottles, exhaust boxes etc. North american twostrokes general two stroke discussion two stroke engine and exhaust design software this is the place to talk about anything related to two stroke road race bikes. 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. Diy cr250 engine porting honda 2 stroke thumpertalk.

Crankcase and cylinder porting is probably the most controversial subject among performance 2stroke engine builders. If you keep your compression high and do not go crazy on your exhaust timing, you can get plenty of torque out of a chainsaw engine for its displacement. I only have a dremel and was wondering if i could do anything at all myself to my yz125 before i put it together. Calculates port heights from durations, or durations from port heights. In a twostroke engine, the end of the combustion stroke and the beginning of the compression stroke happen simultaneously, with the intake and exhaust or scavenging functions occurring at the same time. Porting and trenching twostroke engine cases duration. Stock engine parameters are entered on the top row of controls. We believe that using this software will help your 2 stroke development or racing results on different types of competition. We use computer design software to maximize power and torque at any elevation. Dynomationtwostroke engine simulation motion software, inc. The businesses and individuals that purchased the original dynomation 2 stroke program were pleased with the capability and accuracy of the software. I see a lot of people asking questions about porting feel free to add to this thread all you fellow modders first things first here you got to understand how 2 stroke engines operate just because you know the basics dont mean nothing here is a. Four stroke porting and performance finding reliable, quality power you can feel on modern four strokes is very challenging.

Harris performance engineering hp race development. 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. The trend in high performance two strokes has continued towards more case volume, however each engine and application differ. Aussie twostroke engine invention motorbike writer. Determine the level of porting you wish to achieve before you start cutting or grinding. North american twostrokes general twostroke discussion two stroke engine and exhaust design software this is the place to talk about anything related to twostroke road race bikes. Opening the bottom of the port will increase top end, opening the. If you are aiming for these qualities, modifying your 2 stroke engine is a great strategy. Ive been waiting to open up my 07 cr250 engine for about 18 months now, pretty much since the day i bought it. The worlds leading 2stroke engine simulation software for 3. Our goal is to achieve the biggest power gains as possible, while maintaining reliability on your 2stroke engine. Many things will affect the power delivery of two stroke motorcycle engines. Two stroke engines often have a high powertoweight ratio, power being available in a narrow range of rotational speeds called the power. Twostroke waveaction engine simulation motion software.

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. In motocross its usually a compromise between best peak hp and good early off the pipe power. Purchase the porting tools you need at our online store. Those of us who have grown up in the japanese two stroke. Careful care must be taken to assure that engine will not end up making less power then it did before the engine porting was done. Assign fixed relationships between transfers and exhaust port.

Two stroke engine porting zmod this software made for help out team in first time, but some friend advise this is the time to share. We believe that using this software will help your 2stroke development or racing results on different types of competition. Two stroke engine porting zmod for android apk download. The other is how air density barometric pressure, temp, humidity, and elevation change, affects horsepower. Specialty tools for porting 2 stroke, 4 stroke, cylinders, cylinder heads, 2 stroke case porting, and intakes. Everything you need to know about the twostroke cylinder. Two stroke engine and exhaust design software north. Improve the performance of your twostroke engine with a torqsoft designed exhaust system. My name is ed erlenbach, im a private tuner specializing in yamaha rd and tz performance in southern california. 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. How to tips from tj on porting and polishing 2 strokes.

Every 2 stroke engine is different in what can be done to make more hp, since this thread is about porting will try to focus on just that aspect. You should only rely on the experience of the very best. I have been fascinated with 2 strokes for years but never knew much about how they really worked ports, squish, head design, reeds, etc, etc. Oct 04, 2011 changing the power of 2 stroke engine is really very simple when you know the basic techniques of 2 stroke engines. If you are aiming for these qualities, modifying your 2stroke engine is a great. Jun 07, 2018 neat little 2 stroke transfer porting drillpress machining trick for rc boat engines zenoah, rcmk. At the moment, we have a special 2 stroke bike collection.

We now have a simple 2 stroke expansion chamber design program. But because of the limited worldwide activity in twostroke engine development, program sales were limited and further development was curtailed. Jun 24, 2007 i was reading a thread about a 2 stroke versus a 4 stroke and it occurred to me that if the porting, or timing, of a 2 stroke could be changed, that maybe its maximum torque range could be lowered to an rpm comparable to the 4 stroke, and thus swing the same prop as the 4 stroke. Using apkpure app to upgrade two stroke engine porting zmod, fast, free and save your internet data. Using our flow bench, dynomometer, and advanced computer simulation software along with hard work and testing, we offer industry leading performance. The description of two stroke engine porting zmod this software made for help out team in first time, but some friend advise this is the time to share. Bimotion 2 stroke software has been commercially available and in professional use since 1991. However, you shouldnt just pick any business that you can find anywhere. Twostroke engines often have a high powertoweight ratio, power being available in a narrow range of rotational speeds called the power. Bigger carburetors, higher compression ratios, altered port timings and expansion. Heres how shaving off miniscule ammounts of metal can drastically improve your speed.

Test your own theories on porting and exhaust pipe design. Apr, 2015 has any one done any kind of porting or polishing to a 2 stroke cylinder themselves. So whether you have a 50cc road bike, a 500cc motocrosser or a classic racer, we will design the perfect exhaust system for you. A myriad of different aftermarket accessories is available for you to custom tune your bike to better suit your needs. 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.