Everything You Need to Know About Turbo Headers

High exhaust gas temperatures, high exhaust pressure, cramped engine compartments and the complexity of turbocharged applications pose extreme challenges for exhaust headers. In an attempt to overcome these challenges, many header builders have resorted to using thick gauged tubing and pipe to fabricate exhaust manifolds. Though this may be ok in a street application, it is not acceptable practice for a serious race application due to the high weight penalty. The good news is that durable, li...


Development Tools and Testing Methods for the Optimization of Exhaust Performance

Pressure Analysis Top Topics Two highly technical presentations covering exhaust theory and the testing and evaluation of cylinder pressures opened day two of the Advanced Engineering Technology Conference in Indianapolis. Vincent Roman of Burns Stainless spoke on “Development Tools and Testing Methods for the Optimization of Exhaust Performance,” and NASCAR consultant Cecil Stevens covered “How to Use Cylinder Pressure and Valve Motion Measurements to Improve Performance.” There are many var...


Are Burns' Bends Really Better?

“It takes less time to do it right, than it does to explain why you did it wrong.” - Henry W. Longfellow We are often times asked why our stainless mandrel bends and tubing is expensive compared with our competition. There are several reasons. We use U.S. sourced, ASTM certified tubing (in some rare cases we may use a Canadian or Japanese sourced product based on availability). We use the utmost care in the mandrel bending process. As you know, mandrel bending is a process where metal tubing ...


6-Cylinder and 12-Cylinder Exhaust Header Design

Hope you are enjoying these articles on exhaust header design. 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. As discussed, the 180 degree concept was developed to help even out the exhaust pulses from an uneven firing 90 degree crank V-8 in order to broaden the engine power band. The concept was very successful as illustrated by the Ford ...