Like most things automotive, exhaust header and system design is a science unto itself. As an example in these calculations, i use my 1776 cc volkswagen engine, it sends a whopping hp at 5. Click here to download a spreadsheet that will let you figure out your engines. Exhaust and main transfer timing can be entered by mouse click on graph, or typed in. You only have to put one cylinder value in, note from eliot. Racingsm software for 2stroke development, also for 4strokes in some modules, create 2t exhaust, create 2stroke exhaust. Jan 24, 2015 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 critical role in the performance of every engine. Mastering exhaust system math to build highperformance. Tuning the exhaust system can be an important component in achieving maximum power when optimizing the performance of an engine for racing or dyno shootouts. Then you can click here to shop and add the system you want to your cart. The objectives of this project are to study, develop and maybe sell a software for pipe designing. This guide shows several principals for making a exhaust system. The formulas on this page were taken from fourstroke performance tuning by a graham bell. How to download javapipe to use as a standalone application.
So one can say well why do i need this 1500cfm muffler when this 500cfm muffler will be just as good. The calculator will do the math for you and tell you the minimum recommended pipe diameter for your application. To the best of our knowledge it provides a good quality of accuracy but we do advise that you should always double check your results to. I know the less exhaust pipe curves the better and where it does curve try and make them long and flowing.
Our motor is 400 hp at the flywheel, we need an exhaust size larger than 3. This small java applet uses design rules according to, and, to size a tuned pipe for a 2 stroke piston engine. These bikes has been known to punch out big hp with twin carbs and exhaust. Have you ever wanted to learn how professional engineers can hear exactly whats wrong in your mix and eq it up nice and sweet right away. Can you tell me how i can find what numbers there is calculatof to be in these figures. We shall send you a pdf document with the templates for manufacturing your exhaust. Method 1 and method 2 two and three stage diffuser. Select an engine and camshaft exhaust profile or enter your own values. 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. This coefficient kh is called the horn coefficient, with typical values between one and two. We where both very surprised, after punching in his engine specs, that the resulting dimensions of the program expansion chamber exhaust is in all dimensions within 1mm to 4mm of his exhaust specs.
Processors with a lower number of cores will run the motax expansion chamber optimiser, as will the latest. Jun 08, 2015 2stroke exhaust calculator racingsm software this is a module for complex 2stroke exhaust calculation having in account several variables according to lufo racing tuner philosophy. Choosing exhaust size when turboing a car mighty car. Calculation of air volume to exhaust correction factors according to the type of installation chart 2 type of installation multiplication factor wallmounted hood 1. Small values of kh are best suited to grand prix engines with narrow power bands, larger. This is not a rehash of the old outdated port timearea formulas but rather it relies on the true blowdown time the time it takes for the exhaust pulse to go to zero pressure. A flexible exhaust connection has three primary functions. Nov 27, 2018 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 that will create a folder and shortcuts as well as. This small java applet uses design rules according to, and, to size a tuned pipe for 2 stroke piston engine. This means that to run motax, you will need a post 2010 computer which is preferably a desktop, driven by an intel i7 4core processor. Additionally recommends immediate steps you can take to lower your mortgage costs now.
Will calculate the following based on desired rpm operating point. Im just saying can anyone care to make a rough estimate as to what the max cfm the exhaust side of a stock ej205 is capable off, so at the very least one can select a mufflerresonatorother exhaust components that can at least match that rate. Download it here go to the 2t exhaust calc menu item. You need the right plan, exhaust system design, and component selection.
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. To browse web, stream video or download online content, people often resort to using various third party. To the best of our knowledge it provides a good quality of accuracy but we do advise that you should always double check your results to avoid any problems. This coefficient kh is called the horn coefficient. 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. So whether you have a 50cc road bike, a 500cc motocrosser or a classic racer. 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. 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 pc, download free android apk files at. Hi guys, i am currently in the process of turboing my car. The header length is critical but too long a diffuser length can limit the maximum rpm also. Shown below is the calculated time areas for an exhaust duration of 189. Since 02 xbhp is different things to different people. All download links are direct full download from publisher sites or their selected mirrors. Improve the performance of your twostroke engine with a torqsoft designed exhaust system.
The calculations are assuming a speed of sound in the exhaust gas, which is not. Mastering exhaust system math to build highperformance engines. So now i will build a expansion exhaust for my ported and modified yamaha tzr250 tuned cafe racer using this program. Type in the duration eg 180, and the program calculates all the other variables. Split your calculated 2stroke exhaust up to 42 sections with regular length or even more with irregular lengths. Two 2 stroke exhaust expansion chamber calculator using 3 methods. 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 that will create a folder and shortcuts as well as. You can also save and load the data by using the provided functions. It computes values from bdc to tdc at 10 crankshaft degrees increments. A motorcycle toolkit that focuses on 2 stroke engines. So whether you have a 50cc road bike, a 500cc motocrosser or a classic racer, we will design the perfect exhaust system for you. Download exhaust calculator 2 free shared files from downloadjoy and other worlds most popular shared hosts.
You cannot simply select a random collection of exhaust parts and expect to realize top performance. The book was published 25 years ago and is still published. The following are spreadsheets for different aspects of 2 stroke designmodification. These are the files that can function manually without using macros by using open office. The exhaust timearea programme was then used to raise the exhaust port until our desired power increase was realized. Advanced twostroke tuned exhaust system the challenge the society of automotive engineers clean snowmobile challenge 2002 sae csc 2002 is an engineering design competition for college and university student members of the society of automotive engineers sae. You could use empirical data gathered from others to determine the best possible header primary length and diameter and this is probably the easiest way or you could calculate it yourself given some basic information about. Racingsm software 2stroke exhaust calculator lufo youtube.
In some cases it is not acceptable according to the specifications for pneumosystems. Notes 2 a reduction in primary pipe diameter of 18 of an inch will move the torque peak down by 650800 rpm. Download 2 stroke exhaust calculator for pc free download 2 stroke exhaust calculator for pcmacwindows 7,8,10, nokia, blackberry, xiaomi, huawei, oppo free download 2 stroke exhaust calculator android app, install android apk app for pc, download free android apk files at. Those of us who have grown up in the japanese twostroke. You can change the barrel height or any engine parameter, the exhaust duration will stay at 180, while everything else is adjusted automatically.
You must take into account your engine displacement, head size, cam timing, intake design, carb size, and other aspects of the engine package. Click download file button or copy exhaust calculator 2 url which shown in textarea when you clicked file title, and paste it into your browsers address bar. The calculations are assuming a speed of sound in the exhaust gas, which is not known exactly. You could use empirical data gathered from others to determine the best possible header primary length and diameter and this is probably the easiest way or you could calculate it yourself given some. I have bought a turbo kit that came with the dump pipe, waste gate pipe all the way until the midpipe where the factory cat is bypassed. In order to obtain maximum results matching the carbs. This conversion utility was jointly developed between frozenmist and uk to aid you in configuring your vehicle to get the most out of it. Mar 18, 2002 we do not host any torrent files or links of exhaust calculator 2t from, any file sharing sites. Free 2 stroke exhaust expansion chamber calculator youtube. If you dont see it then scroll the page to the right.
Porting calculator calculate the needed exhaust and transfer port durations to match the desired peak power rpm. Flexible connections should be installed as close as possible to the engine exhaust outlet. The intent of the competition is to provide universities with an. This is a module for complex 2stroke exhaust calculation having in account several variables according to lufo racing tuner philosophy. Bellows are typically used for exhaust systems with a diameter of 200 mm 8 in and larger. Easily calculate the appropriate premix for a 2 stroke engine with this gas oil mix ratio calculator. The second table lets you enter an existing header length along with other details to get the maximum rpm of the header powerband. Used to calculate opening area when a circular cover is pivoted over a circular opening. Calculation and design of exhaust noise mufflers for power. Choosing exhaust size when turboing a car 100520, 01. Purchase with immediate download from digital river, shareit.
Using apkpure app to upgrade 2 stroke exhaust calculator, fast, free and save your internet data. Two 2 stroke exhaust expansion chamber calculator apps on. From a close knit national community of bikers to indias only motorcycling lifestyle magazine and. New feature of racingsm software, the 2stroke exhaust segment splitter. Our filtering technology ensures that only latest exhaust calculator 2 files are listed. Exhaust length,exhaust pipe,induction calculation, tuned exhaust pipe length calculation for singletwinsfours. This calculator isolates the exhaust stroke phase of the otto cycle. Let us assume we have a motor making 400 flywheel horsepower and wed like a single pipe exhaust. Simply input the horsepower figures, the number of exhaust pipes, and hit calculate. Exhaust calculator 2t full version, full download, premium download, licensed copy.
This toolkit offers some basic two stroke engine calculators in hand but also. A 3 single exhaust is good for about 340 crank horsepower. Choosing exhaust size when turboing a car mighty car mods. Free 2 stroke expansion chamber calculator software update. Mar 27, 2010 i have just got my son an old 1985 xr 250. 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. Software downloads for 4t exhaust header wizard pro. 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. The inputs will be engine specification and the outputs will be pipe dimensions. If file is multipart dont forget to check all parts before downloading.
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