Exhaust Header Theory and Proper Exhaust Tuning - Burns …
When considering a header design, the following points need to be considered: 1) Header primary pipe diameter (also whether constant size or stepped pipes). 2) Primary pipe overall length. 3) Collector package including the number of pipes per collector and the outlet sizing. 4) Megaphone/tailpipe package. Still stumped?
Mastering Exhaust System Math to Build High-Performance …
Jan 24, 2015 · It pinpoints the ideal header dimensions for your engine and simplifies header design. If you study it closely it teaches you a lot about the effects of pressure wave activity in the engine’s exhaust system.
how to size a 4-2-1 header for my SBC - Grumpys Performance …
Nov 29, 2009 · in an ideal world the exhaust pulses in each (Y) in a custom header will be evenly spaced as they enter the header collector, to equalize the exhaust pressure and restriction to flow... look carefully at the diagrams, below.
Calculate Primary Header Tube Length and Diameter - Wallace …
The following calculator can be used to calculate the header dimensions best suited to your combination. The input terms are below: Exhaust Valve Opening Point is given in degrees before bottom dead center (BBDC). Entered values should be greater than 0.
calculating header design | Grumpys Performance Garage
Sep 20, 2008 · to actually calculate the ideal matched header dimensions, this is not a guessing game it's strait physics , AND WELL DOCUMENTED MATH, and easily calculated to maximize exhaust scavenging and max volumetric efficiency, resulting in max power , at any given rpm and displacement, compression , cam timing etc this stuff can be calculated, but when ...
The Science Behind Exhaust Header Tuning - OnAllCylinders
Oct 30, 2015 · Inside a header (with the engine running), “waves” of exhaust passing through the tubing are more or less manipulated to extract the burned gases from the combustion chamber. Simultaneously, those waves of exhaust help the intake side by pulling in a fresh air-fuel charge.
Performance Exhaust System Design And Theory - EngineLabs
May 2, 2016 · Step headers may employ many different sizes of tubing — as many as four or five between the primary and the collector. The theory of this design is to generate a progressive exhaust velocity to optimize scavenging nearest the cylinder while preventing restriction at …
6-Cylinder and 12-Cylinder Exhaust Header Design - Burns …
Building headers from mandrel-bent stainless tubing using proper fabrication techniques is important, but proper header design is crucial. Last month, we considered 180 degree exhaust headers for V-8s.
Exhaust Header Tube Sizing and Length
There are a variety of data available online on how to select a set of headers for a specific application. Instead, this article will provide a simplified, yet detailed, and hopefully easy-to-understand explanation of what is important regarding header sizing and application.
Header Purchasing Guide | Team Integra Forums
Jan 5, 2003 · These articles discuss the characteristics that each header design will have on your engine's power output. *Each header is listed by the manufacturer, tube layout, collector diameter size. Additional notes may be added for certain headers in italicized font underneath the corresponding picture.