Shown below is the calculated time areas for an exhaust duration of 189. May 27, 2015 in exhaust tuning it is well established that a 41 header provides the greatest hp but only at peak rpm. 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. Select an engine and camshaft exhaust profile or enter your own values. For example, if you expect the maximum torque to hit at around 4,800 rpm and the engine displacement is 408 ci, the formula gives you a diameter of 979.
As an example in these calculations, i use my 1776 cc volkswagen engine, it sends a whopping hp at 5. In next page click regular or free download and wait certain amount of time usually around 30 seconds until download button will appead. This conversion utility was jointly developed between frozenmist and uk to aid you in configuring your vehicle to get the most out of it. Ideal exhaust size for displacement and power tuner university. Enter your engines displacement, number of cylinders, desired tuned engine speed, and exhaust header tube diameter. Conventional design criteria says to tune the primary tubes to reinforce the rpm you want the greatest gain and run the secondaries approximatley. Looking for downloadable 3d printing models, designs, and cad files. The second table lets you enter an existing header length along with other details to get the maximum rpm of the header powerband. Jun 08, 2015 2 stroke exhaust calculator racingsm software this is a module for complex 2 stroke exhaust calculation having in account several variables according to lufo racing tuner philosophy. This is the length from the piston face to the end of the exhaust flange. Calculation tools our advanged calculation tools deliver data based on individual countryadjusted temperature conditions.
To be perfectly honest, i think 3 is overkill for a turbo on an engine that size. This requires an exhaust pipe diameter for a dual system to be around 3. The description of 2 stroke exhaust calculator a simple 3 stage two stroke exhaust calculator based on formulas of g. Download exhaust calculator 2 free shared files from downloadjoy and other worlds most popular shared hosts.
This coefficient kh is called the horn coefficient, with typical values between one and two. The quick and easy way to choose what diameter pipe you will need from the headers to the mufflers is to go back to the old rule of thumb, that for every 100 horsepower, 1 of total pipe diameter is needed across the system. Unleash the creation of designed pipe shape in dxf file. 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. John grudynski, in an class i did with him for tu premium members back a few months ago available here. Our example has an after market 50cc performance cylinder with a bridged exhaust port. Calculation and design of exhaust noise mufflers for power. Purchase with immediate download from digital river, shareit. Using apkpure app to upgrade 2 stroke exhaust calculator, fast, free and save your internet data.
Racingsm software for 2stroke development, also for 4strokes in some modules, create 2t exhaust, create 2stroke exhaust. Racingsm software 2stroke exhaust calculator lufo youtube. Download two 2 stroke exhaust expansion chamber calculator apk 5 for android. Jul 25, 2007 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. This calculator isolates the exhaust stroke phase of the otto cycle. Small values of kh are best suited to grand prix engines with narrow power bands, larger. Two 2 stroke exhaust expansion chamber calculator using 3 methods. Mastering exhaust system math to build highperformance engines. The header length is critical but too long a diffuser length can limit the maximum rpm also. Racingsm software has features for many different areas 2stroke exhausts development, drag racing features, simulators, carburetor tuning, connectingrod analysis etc with all this knowhow along with lufo racing heritage, we believe this is a very fair price.
There appears to be two major schools of thought on the best exhaust system length. In either mode you can enter values for the exhaust, and main transfers by right mouse click from the durations vs rpm graph. If you dont see it then scroll the page to the right. Download the apk file of the application you need for example. In the design form first select the water cooled and reed induction options from the dropdown menus. Well begin the length calculation buy subtracting 212 from 360 equals 148, then multiply that by 850 equals 125,800. I got sick of the silly free programs and the expensive for sale programs and that wasteoftime 2 stroke wizard and so made my own expansion chamber calculator. And multiply that by 115 for the capable cfm of that pipe. The diameter is the internal diameter of the exhaust flange. This, of course, is a rough estimate, and there are. Add edit box for the length difference between theoretical and experimental lengths. Download it here go to the 2t exhaust calc menu item. With our publishing program, we can help get your games to millions of users on multiple. It computes values from bdc to tdc at 10 crankshaft degrees increments.
For a more street efficient system a 4 2 1 give more gain at low rpm and moderates the peaks. Click here to download a spreadsheet that will let you figure out your engines. A number of european countries has their own webpage with link to the calculation programs based on local temperature conditions. For a 2 pipes into 1, you calculate the distance from each geometry change to 1 exhaust port and use that length in your dynamic calculations. Calculating required exhaust pipe diameter just commodores. Being a street engine, it has a volumetric efficiency of 0.
This small java applet uses design rules according to, and, to size a tuned pipe for a 2 stroke piston engine. Get your games in front of thousands of users while monetizing through ads and virtual goods. The calculations are assuming a speed of sound in the exhaust gas, which is not known exactly. This cylinder has two exhaust ports and five transfer ports so enter 2 in the no. The exhaust timearea programme was then used to raise the exhaust port until our desired power increase was realized. Each intake port can be locked to a fixed timing relation with the exhaust port. Choosing exhaust size when turboing a car mighty car mods. Mota software, 2 stroke engine simulation software, 2 stroke exhaust design.
Review the 2 stroke exhaust calculator album or also 2 stroke exhaust calculator free download 2020 plus 2 stroke exhaust calculator online. Two 2 stroke exhaust expansion chamber calculator for android. A simple 3 stage two stroke exhaust calculator based on formulas of g. 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.
This guide shows several principals for making a exhaust system. Open the downloaded apk file and install a simple 3 stage two stroke exhaust calculator based on formulas of g. Software pipe designer ezin hobeki 2 strokes resources. For those who want to get deeper into header design there is an inexpensive headerpipedesign program available on the internet called pipe max. Another common estimate needed is the cfm per sq inch of tubing which is 115 cfm per area in cubic inches. Two 2 stroke exhaust expansion chamber calculator apps on.
Go to exhaust exhaust calc menu stroke performance. Circular intakeexhaust calculator used to calculate opening area when a circular cover is pivoted over a circular opening. Free 2 stroke expansion chamber calculator software update. Racingsm software has features for many different areas 2 stroke exhausts development, drag racing features, simulators, carburetor tuning, connectingrod analysis etc with all this knowhow along with lufo racing heritage, we believe this is a very fair price. Opinions differ as to the best exhaust pipe lengths for any engine. Method 1 and method 2 two and three stage diffuser. 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.
The graph is a plot of port durations vs rpm from a. New feature of racingsm software, the 2 stroke exhaust segment splitter. Split your calculated 2 stroke exhaust up to 42 sections with regular length or even more with irregular lengths. 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. In the calculations ill be doing below, ill be assuming that we are using standard 16 gauge galvanized steel. Our filtering technology ensures that only latest exhaust calculator 2 files are listed. You can also save and load the data by using the provided functions.226 1488 1470 921 483 1165 135 1538 1421 338 307 762 572 1093 3 996 764 292 444 296 651 1600 280 328 1254 609 1327 1392 591