Im interested in bothlearning the flow characteristics to design a great tuned race headerand full exhaust systemthanks for sharing about your experience with a. Larry meaux is one of the top head porters in the country. If you use design programs such as pipemax or the one at. Garhams calculationsill do researcher on thatand definitely look into pipemaxthanksim not trying to design and weldfab headers and exhaust systems overnightim just. Learry meaux at max race software wrote pipemax, and this is a good bit more accurate, as. Learry meaux at max race software wrote pipemax, and this is a. The end of the stock headers ys off and one outlet goes originally to the primary catalytic converters. You wont find anything close to that off the shelf. This is an example of using pipemax while on an engine dyno. Remember if you want to check header sizing for a supercharged r3, use your dynamic boost compression ratio, not your static compression ratio. Modeling this on a pc simulator like pipemax is a good idea if you want to pinpoint the best overall dimensions. Just didnt want to spend around 2k for an exhaust and headers with a 1015hp gain if thats all it is. Paypal purchase price is for 1 license that allows you to install pipemax on up to 3 of your computers switch backandforth easily between metric and english units inputs pipemax is programmed and compiled on latest windows 10 version computer.
Cad software for turbo header exhaust designorturbo. Also very easy to see the effects of exhaust reversion and exhaust system wave. His inexpensive pipemax software program helps engine builders mathematically pinpoint optimum port lengths and cross sections for any racing application. Oct 30, 2019 of a critical input parameter for pipemax, in particular is the port length centerline.
Pipemax is primarily a header design program with extra freebie calculations and lacks enough inputs to make it a fullblown engine simulation program. Early a header options tuned rpm ranges for a bodies. Discussion in rocket performance started by steel, jul 3, 20. If youre not entirely comfortable with the mathematics of engine performance youll really appreciate larry meauxs pipemax header design software from. Includes templates for mufflers, axles, gas tanks, etc. Mastering exhaust system math to build highperformance engines. We made 7 dyno pulls then inputted dyno data into pipemax, from output data we knew header collectors were too short. Purchase a copy of this very reasonably priced program from larry meaux, fill in the information and it will provide the recommended header specs. Mass air flow sensor questions, answers and shared. Mastering exhaust system math to build highperformance. The needs of a true competition engine are quite different than those of the engine under the hood of a typical commuter car. Follow along as stevie creates a set of high performance dynamometer headers using pipemax and the icengineworks precision exhaust header modeling systems. Meaux racing heads pipemax program is a popular exhaust system dimension calculator. In addition, mavrigian covers the special exhaust system requirements for supercharged and turbocharged systems.
The website for the pipemax software suggests tapering the exhaust port size down to the calculated 1st segment diameter if the exhaust port is larger than what pipemax suggests for the 1st segment. Mar 30, 2008 if you register, you can use their header design program for free. I started with pipemax my dilemma lies in the fact that the original headers seem to be metric tube od as it doesnt align with what is readily available. We are constantly adding to this page, so check back frequently for updates. Stepped header design stepped header design travisr automotive op. Sep 25, 20 if you are really into header design, larry meaux of meaux racing heads has a program called pipemax that will assist you in designing the ultimate set of headers. I simply reversed engineered the headers to find expected rpm ranges for each engine listed.
It provides the ideal crosssection and length for optimum header design and much more. If you are a racer, you will be familiar with the header design software, pipemax. If you are really into header design, larry meaux of meaux racing heads has a program called pipemax that will assist you in designing the ultimate set of headers. Hot rod engine tech pipemax creator larry meaux on race. Sheet metal intake manifold design question pipemax is a program adapted from a pipe organ tuning program it takes in acount only air flow its mainly used for headers and collectors with great results, it also tells the intake lenghts and runner size to use the pulse wave from the water hammer effect of the intake valve closing. Any set of full length headers isnt going to be easy to install in an early nova, and the choices for a mild 327 are limited. So port match the header flange to the exhaust port but taper it down to 1. If you register, you can use their header design program for free. Im interested in bothlearning the flow characteristics to design a great tuned race header and full exhaust systemthanks for sharing about your experience with a. Jan 24, 2015 modeling this on a pc simulator like pipemax is a good idea if you want to pinpoint the best overall dimensions. A stepheader design is that which has more than one size of primary tubing, sectioned in simple 18 increases over the length of each tube.
Join the forum larry meauxs pipemax header design software at. This comprehensive program predicts engine performance based on your input specs and. Pipe max porting tips and software from meaux racing heads. That and its kind of a weird design after the collector. I was looking online at a program to design the header system. May 04, 20 i used it to build my exhaust on my sr500.
The header begins at the cylinder head with a smaller tube diameter and then increases in usually one or two larger incremental sizes that occur at calculated distances from the cylinder head flange. From the basic design needs, to the base component materials, to the sizes of the flowrelated hardware, to the precision of the machining, to the capabilities of each pertinent system, very few similarities exist. A step header design is that which has more than one size of primary tubing, sectioned in simple 18 increases over the length of each tube. For those who want to get deeper into header design there is an inexpensive headerpipedesign program available on the internet called pipe max. Eds focus is equal length 4 in 1 designs mostly for 14 mile.
On all my other bb mopars i always had a good set of headers but they were stroked calmed motors with after market heads making 650700hp. The principle behind header design is the following. It was fun to pre design stuff before spending money on parts. Header tube diameter and length is analyzed, as well as the most efficient catalytic converters and resonators for achieving your performance goals. Thats exactly what it is, pipemax is a headerexhaust design program. Some of the inputs will make little or no difference in predicted hp and tq. As the number of automaker recalls due to software. 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. Just wondering if anyone here has pipemax or any other sort of header design software. Compared to the old white brothers setup 1 34 header with a supertrapp with an open end cap i went up 3 main jet sizes and leaner on the needle. I use pipemax software to design headers and exhausts, heres some useful tidbits to consider when choosing an exhaust for a near stock ls3. Its best if you avoid using common keywords when searching for pipemax. This comprehensive program predicts engine performance based on your input specs and it also calculates all of the optimum intake and header dimensions for maximum performance.
It is also the only product on the market to take your custom tube header design and break it down to fabrication instructions using prebent mandrel tubing. Stahl headers page 4 bmw e9 coupe discussion forum. Fill out the form and ed henneman will provide a design parameters. Pipemax was added to downloadkeeper this week and last updated on 22apr2020. Header modeling blocks allow you to prototype and build out a complete exhaust headers prior to cutting and welding anything. Jul 30, 2012 thats exactly what it is, pipemax is a header exhaust design program. Get yourself a copy of pipemax worth every dollar you spend on it. If this header system could be tuned as in a na sytem all the better. You give in all the data in the top boxes and then it gives you optimal primary diameterlength, collector diameterlength, x pipe location. From the centerline dimension above, the intake and exhaust port velocities in feetsec fps can be calculated. Exhaust fabrication software header design software.
If you dont have ms excel, you can download and install open office, its free and will open. Even with engine simulation, it can be tricky to see what the effect of each pulse reflection is the pressure waves get superimposed so that its hard to see whats what. The wave affects the ve % and the sf901 air turbines data. Pipemax header design software hot rod engine tech. Pipemax takes 1 minute and its pretty much in the ballpark, but you have to guess a bit if you are going to use it as an engine sim, because it is after all only a header pipe program its still my favourite for ease of use though. It uses simple terms and technology that are easy to understand.
Turbo manifold modeling blocks simulate use of stainless elbows for turbo fabrication and full exhaust modeling blocks help when laying out tricky sections of full exhaust systems as well as downpipes and cold air intakes. May 12, 2017 i use pipemax software to design headers and exhausts, heres some useful tidbits to consider when choosing an exhaust for a near stock ls3. Compared to the old white brothers setup 1 34 header with a supertrapp with an open end cap i went up 3 main jet sizes and leaner on the needle it rips from idle to redline. I built the primary to pipemax specs and used it for the overall length. All softwares are only for windows winxp up to the latest windows 10 version. Garhams calculationsill do researcher on thatand definitely look into pipemax thanksim not trying to design and weldfab headers and exhaust systems overnightim just.
Pipemax exhaust design post by belgiquebasterd mon aug 20, 2012 8. Running larry meaux pipemax which i have used to good effect on my na race car, i come up with a 1st best spec which is a long primary system, and a 2nd best spec which has much shorter primaries about half the length. Then i remembered how the pipemax forum had a thread that larry meaux had posted. The software will do all the necessary mathematical calculations for you it is staggering the amount of information you will have at hand. Ill also use performance trends engine analyzer, motion. The software will do all the necessary mathematical calculations for you it is staggering. Pipemax header design software lexustoyota v8 uzfe forums. In total there is 1 user online 1 registered, 0 hidden and 0 guests based on users active over the past 5 minutes most users ever online was 148 on sat mar 14, 2020 2. Sheet metal intake manifold design question the bangshift. Those programs are great for us to have, as we deal with header design every day, but for any fabricator building a oneoff set, the expense of a software program may not be worth it. Early a header options tuned rpm ranges for a bodies only.
It is primarily a header design program, but it incorporates enough user data to also function as a partial engine simulation program. This is the tuned rpm range for the tube size and collector. It also calculates torque and horsepower output based on ve and the recommended header specs. Some of the guys on use it a lot to determine proper header sizing. Tractorsport flowbench forum archive view topic pipemax. The following is a list of header design resource that we hope you will find helpful.