2 stroke porting software download

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. For port work, one company that will help you is 2strokeporting. Crankcase and cylinder porting is probably the most controversial subject among performance 2 stroke engine builders. Part of the problem is understanding the pulse or charge nature of the airflow in a 2 stroke engine. The following are spreadsheets for different aspects of 2 stroke designmodification. Specialty tools for porting 2 stroke, 4 stroke, cylinders, cylinder heads, 2 stroke case porting, and intakes. 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. Note that you do not require a paypal account as you can use your credit card. 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.

Mota software, 2 stroke engine simulation software, 2 stroke exhaust design. Those of us who have grown up in the japanese two stroke. I only have a dremel and was wondering if i could do anything at all myself to my yz125 before i put it together. Two stroke engine porting zmod for android apk download. Apr, 2015 has any one done any kind of porting or polishing to a 2 stroke cylinder themselves. Really cool two stroke cylinder porting software youtube. Two stroke engine and exhaust design software north. Next enter the cylinder bore and stroke which are 40. This can easily ruin your eninge, but can also increase performance by alot. This program is not a part of mota, but it has been put together. From beginners in porting,to brazen speed phreaks, this is a great tool if your not a molecular, thermohydrus calculus genius space physicist math scientist.

You should read about how the two stroke enigne works before you attempt this. 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. Two stroke tuners handbook 2 another mistake commonly made, sometimes even by those who have enjoyed some success in modifying two stroke engines, is to believe in a kind of mechanistic magic. Developed by pedro, with more than 20 000 lines of code, all the knowhow applied to software comes from us and also a lot from the legendary portuguese 2 stroke tuner lufo racing, this software is directed for all 2 stroke.

Petals reed valve in the 2 stroke engine with reed valve admission, the identification of petals more adapted to the reed valve and to the engine is essential to maximize the performance starting from the intake phase. Many things will affect the power delivery of two stroke motorcycle engines. 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. This will get you started by providing, for your engine, the dimensions of an expansion chamber with a 2 stage or 3stage diffuser.

If you are aiming for these qualities, modifying your 2 stroke engine is a great strategy. Softengine engine simulation software production 2tbase seven software. Calculate the needed exhaust and transfer port durations to match the. Contents chapter 1 introduction 9 chapter 2 the cylinder. New version of 2t exhaust calculator it is a freeware 2 stroke expansion chamber exhaust calculator program download at. The morbidelli 125 twin road racer is a rotary valve engine. 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.

Twostroke waveaction engine simulation motion software. Softengine engine simulation software 2tbase seven software. Each intake port can be locked to a fixed timing relation with the exhaust port. Im working on gathering enough parts to build a triple cylinder rd400 and at some point ill need to sort out the porting and exhaust. The newest info i have is the two stroke tuners handbook by gordon jennings. Simple twostroke cylinder porting tutorial youtube. The worlds leading 2stroke engine simulation software for 3. All engine development is done exclusively with tsr two stroke racing engine design software and. Apr 08, 2007 im looking to start doing all my own porting and was thinking about buying the tsr 2 stroe porting software, has anyone used it, and is there any better software out there.

Lowell horning 2 stroke porting master modified as i felt fitting you have two three really critical elements in a 2 stroke engine that generate power and are porting areas that yield real results if done correctly and in concert with intakecombustionexhaust quality purpose built pipe is critical. If you are aiming for these qualities, modifying your 2stroke engine is a great. If you are aiming for these qualities, modifying your 2stroke engine is a great strategy. My name is ed erlenbach, im a private tuner specializing in yamaha rd and tz performance in southern california.

This expansion chamber is not the product of simple correlations as for other products that abound on the web, but an automatic design created by mota which is a full wave action 2 stroke engine simulator. Bigger carburetors, higher compression ratios, altered port timings and expansion. The inlet port opens 30 after bdc and closes 79 after tdc. Heres how shaving off miniscule ammounts of metal can drastically improve your speed. These are the files that can function manually without using macros by using open office. Porting and polishing two stroke motorcycle engines. Software for fine tuning and design of two stroke engine by. Show flow efficiency by rpm help you modify port better before action. Pipes, silencers, carburetors, reeds and valves are all popular bolton modifications. Finally, enter the exhaust duration of 184deg and the peak power speed of 12500 revsmin and click the design now button.

We also have a simple 2 stroke expansion chamber design program. 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. We now have a simple 2 stroke expansion chamber design program. Sep 30, 2012 kick ass and take names with this baby software located on the web at this address. The piston crown opens and closes the exhaust and transfer ports. Ask our shadetree mechanics 2 stroke wizard pipe builder. 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 other is how air density barometric pressure, temp, humidity, and elevation change, affects horsepower. Bimotion 2 stroke software has been commercially available and in professional use since 1991. These modifications can be extremely effective when used in the right combinations. But because of the limited worldwide activity in two stroke engine development, program sales were limited and further development was curtailed. The best thing about bolton modifications is if you dont like what the product. Fink is open source distribution software specifically designed for porting applications in mac os x. Mota for windows slide show of features millions of tuning variations possible. Purchase with immediate download from digital river, shareit. Enthusiasts, tuners, mechanics, gp, drag racing, mx, enduro. Port matching, porting and trenching twostroke engine cases. Feb 08, 20 well i have been reminded lately that this is a dirtbike forum where i can ask questions so i figured id give it a shot. Kick ass and take names with this baby software located on the web at this address. Hi performance two stroke porting software program youtube.

There is one or more forwardlocated exhaust ports, two or more side transfer ports, and one rear intake port. 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. You should only rely on the experience of the very best. Time between exhaust port opening and transfer ports opening. How to tips from tj on porting and polishing 2 strokes.

Port heights port durations required ranges of port mean areas possible ring flutter rpm mean piston speed suggests carburettor size power meter you input expected bmep value adjust port shapes for target areas in cad window. Porting and polishing twostroke motorcycle engines. Two stroke cylinder porting tips watch this before you start cutting. Dynomationtwostroke engine simulation motion software, inc. Purchase the porting tools you need at our online store. Each part of the 2stroke cycle can be evaluated and designed with computer software. An engine port is an open window in the cylinder wall for the intake or exhaust of fuel mixture airgas. Oct 04, 2011 changing the power of 2 stroke engine is really very simple when you know the basic techniques of 2 stroke engines.