4 stroke exhaust pipe calculator software

The pipe on our tuned 2strokes is gradually expanding in diameter from the engine to the point where it enters the muffler. Let us assume we have a motor making 400 flywheel horsepower and wed like a single pipe exhaust. P primary pipe length on a 41 manifold, or primary pipe length plus secondary pipe length on a 421 manifold, in inches. I know 4c engines come with a header pipe and sometimes a small canister muffler from the manufacturer. Tuned exhaust pipe length calculator for singletwinsfours. These bikes has been known to punch out big hp with twin carbs and exhaust. They are so simple and fun that ive always enjoyed tinkering with them. The formulas on this page were taken from fourstroke performance. Engine geometry is modeled using commercial proe software. Engine swaps, custom 2stroke builds, fabrication and welding. This is because four cylinder engines have a 180 crank, whereas virutally all v8s have a 90 crank the angle between the crankpins and so the order in which the exhaust pulses come down the pipes is different. You can also save and load the data by using the provided functions. Cylinder and exhaust pressure during the exhaust stroke where subjects of focus as the initial pressure oscillated round the average exhaust pressure level. Split your calculated 2stroke exhaust up to 42 sections with regular length or even more with irregular lengths.

A 3 single exhaust is good for about 340 crank horsepower. These waves travel at the speed of sound maybe even faster. Free 2 stroke expansion chamber calculator software update. Calculation of the instantaneous flywheel acceleration gave a measure of the torque. News and changes to the website are posted here, as well as questions and issues regarding the usage of e2s. Also included are section angles plus pipe volume, volume ratio, header length and tuned length. Our exhaust systems are developed inhouse and meticulously tested by both our race team and support riders to ensure you are getting raceproven products that will help separate you from the pack. The way a two stroke motor works causes them to be f. Java script engine displacement calculator engine parameters calculator. The shape of the exhaust pipe is not simply that of a constant diameter pipe, such as on a 4stroke engine. We shall send you a pdf document with the templates for manufacturing your exhaust. The displacement, exhaust valve size, induction system, cam profile, exhaust port design and rpm range all factor into deciding what form the exhaust system should take. The basic principle of the tuned pipe is making use of the moving air masses in the exhaust to assist in the scavenging the process whereby the exhaust gases are removed and replaced with unburnt mixture of a 2stroke engine.

The pipe builder would make a pipe as the program dictated and then chunk. Download the apk file of the application you need for example. He will do one of two things,hang up, or if he is a good one,start explaining the complex nature of fluid dynamics, sonic wave pressures and the effects temperature on the speed and timing it takes to hit an open exhaust port at 6500 rpmsthis being said. That shape is an important part of the exhaust tuning. Download 4 stroke exhaust pipe calculator for pc free download 4 stroke exhaust pipe calculator for pcmacwindows 7,8,10, nokia, blackberry, xiaomi, huawei, oppo free download 4 stroke exhaust pipe calculator android app, install android apk app for. Exhaust system design is more complicated than running a few tubes.

In a motorcycle we aim the gases out the exhaust port and into the exhaust pipe. The calculator will tell you if there is enough or too much difference in the durations of the exhaust and transfer ports which varies according to the design of the exhaust port. Improve the performance of your two stroke engine with a torqsoft designed exhaust system. The inputs will be engine specification and the outputs will be pipe dimensions. Performance exhaust system design and theory enginelabs. On four stroke racing bikes that pipe could be a long straight pipe or a short header pipe and a megaphone. After our trial and test, the software was found to be official, secure and free. Four 4 stroke exhaust pipe calculator for android apk. Mota will accept a singlecylinder design, which will also cater for many multis where 2, 3 or more cylinders of the same basic layout are repeated. This app can be use for finding inside diameter and length of four 4 stroke exhaust pipe with specifictype of an engine e. My expansion chamber calculator, how to obtain and use it the mathematical basis for the calculations of the return waves in my excel file an example of pipe analysis and redesign pipes built using this method my video showing how to make a pipe by hand how eccalc agrees with the real life exhaust pressure graphs from blair four examples showing how accurate eccalc is compared to. How to plot two stroke expansion chamber cones on paper from software duration. It is shaped like an elongated cone when viewed from the side. Enduro roll chart gear calculator piston travel vs.

Small values of kh are best suited to grand prix engines with narrow power bands, larger. Exhaust pipe design with cone layout software by paul crowe if you have ever tried to layout a conic section on sheet metal, cutting just the right piece, that when rolled over and joined on edge, you have a cone with the exact shape, size and angled openings desired, you know its not easy. Generally road engines will require the manifold to be tuned to the max torque rpm whereas race engines will be tuned to work either at max bhp rpm or a speed midway between the max bhp rpm and max torque rpm. The exhaust designer programme enables the user to design a twostroke exhaust system with ease, then with one click of the mouse, create a pdf document in any of the common paper sizes a4, a3, letter. So whether you have a 50cc road bike, a 500cc motocrosser or a classic racer, we will design the perfect exhaust system for you. Motorcycle software dans free motorcycle repair course. Likewise, larger engine displacements call for bigger. Pdf improving the performance of twostroke motorcycle with. Proper exhaustpipe size is a function of both engine output and displacement. The higher the engines output, the larger the pipes should be. The calculations are assuming a speed of sound in the exhaust gas, which is not. Dealing with 4cylinder, and flat plane crank v8s, we find that because the. The main interface of bendtech exh gives you the ability to recreate the critical components of a vehicle axles, mufflers, gas tanks, etc and then properly route the tubing around them. Then, divide figure a by figure b and you have the pipe length in inches.

I know the less exhaust pipe curves the better and where it does curve try and make them long and flowing. We will include automatic pipe squelton and cad support in order to have. For a race engine, subtract 3 from the rpm at which peak horsepower occurs. Great tool for those who are building exquisite format exhausts, one of the largest benefits of this module is that it can be used with any exhaust formula results. New feature of racingsm software, the 2stroke exhaust segment splitter. I found most other software work on outdated blair and jennings formulas. Free 2 stroke exhaust expansion chamber calculator youtube. Tuning an exhaust system to a given application is a casebycase basis challenge. With the intake valve open, the piston travels down the cylinder pulling a fresh. The exhaust pipe works because of the pressure waves generated when the exhaust valve opens. Tuned exhaust pipe length calculation for singletwinsfours. The objectives of this project are to study, develop and maybe sell a software for pipe designing.

A simple 3 stage two stroke exhaust calculator based on formulas of g. And last but not least you can use my pipe calculator to analyze the current pipe and then. This data is used to calculate the compression ratio, maximum air intake requirements in cfm. This small java applet uses design rules according to, and, to size a tuned pipe for a 2 stroke piston engine. So whether you have a 50cc road bike, a 500cc motocrosser or a classic racer. For harleydavidson applications the following rpm values would be typical. Mastering exhaust system math to build highperformance engines january 24, 2015 by muscle car diy exhaust systems dont generally invoke the glamour and gut level appeal associated with many highperformance induction systems, but they certainly play a. Mastering exhaust system math to build highperformance. The first step in the 4stroke process is the intake stroke. The following calculator can be used to calculate the header dimensions best suited to your combination. In order to obtain maximum results matching the carbs.

Test your own theories on porting and exhaust pipe design. Here is the official description for 2 stroke wizard tuned pipe. The opening angles of the cones should be 4 to 10 for the opening cone. Forum to provide in depth discussion on various 2stroke related topics that are not specific to one particular. Avl needed an optimized exhaust system for this engine.

There are two pieces of information that must be supplied in order to determine the exhaust pipe lengths for an engine. Fics new 1440cc with uscar pluginjector size calculator. Improve the performance of your twostroke engine with a torqsoft designed exhaust system. Follow the link to my software site and go to the 2t exhaust calc menu item and download either the stand alone program or a installer package. Open the downloaded apk file and install a simple 3 stage two stroke exhaust calculator based on formulas of g. There are many ways to boost the power, one of which is by installing a tuned pipe. The rpms for the middle of the desired power band is needed. What distance from the edge of the exhaust port is the temp measured at when the parameter is entered. Crankshaft rotation ratio buddy two stroke gas to oil ratio. General rules of thumb are easy to grasp, but applying them correctly is where things get tricky. Borestroke is given in inches exhaust valve opening point is given in degrees before bottom dead center bbdc.