Page 20 of Exhaust Technology 2007 by Burns Stainless LLC

racing merge collectors general information surcharge may apply burnsstainlessmergecollectors are in widespread use by top engine builders in nhra pro stock car bike and most other classes and are very popular in nascar alms fia-gt trans-am and irl fabricated from pre-bent tubing to form a pyramid inside burns stainless merge collectors combine high flow and high velocity to increase and broaden an engine s torque curve all the way to the horsepower peak and beyond they feature the highest quality fabrication and welding and each one is completely hand finished inside for proper flow for drag racing and similar applications where a tailpipe is not required megaphones fitted with reverse cones are invariably the best option they make the most horsepower maintain the highest and smoothest torque curve and on well developed engine combinations with optimally short header tube lengths and a well chosen collector outlet diameter offer the highest potential power past the peak without sacrificing the lower end here are our five common collector outlet options each is available with 2 into 1 3 into 1 4 into 1 5 into 1 and 6 into 1 collectors to fulfill your collector order we need to determine 4 basic dimensions 5 into 1 and 6 into 1 collectors are special order items please call for price and info 1 straight extension 1 inletdiameter the outside diameter of your final header tubes 2 collectoroutletdiameter normally determined by our x design computer program see page 19 there is no standard outlet size each collector system is based on your engine s specs 2 v-band flange 3 styleofoutlet long or short transition or megaphone generally if your vehicle uses a tailpipe a transition and tailpipe ring will be needed if you don t have to run a tailpipe we recommend using a megaphone for maximum horsepower and powerband 3 short transition 4 final outlet diameter and configuration usually a tailpipe ring for use with a transition a tailpipe ring is described by its outside diameter it slips inside your tailpipe and is normally 2 long if you plan on a megaphone a reverse cone is highly recommended 4 long transition megaphone the best way to order merge collectors 1 fill out the race engine spec form on the last page of the catalog or on our web-site and fax,mail or email it to us 2 we ll analyze your engine with x-design and call you with the results and our recommendation 3 your custom collector order can then be completed to your specs and shipped usually within 14 days monday friday 7:30 am to 4:30 pm fax 949.631.3184 burnsstainless.com 18 burns stainless llc 949.631.5120

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