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(After all, this was the explosion of an air/fuel mixture, right?) An exhaust manifold is usually made of cast iron, and its' primary purpose is to funnel several exhaust ports into one, so you don't need four exhaust pipes sticking out the back of your Civic. ... Exhaust gases leave the engine under extremely high pressure.
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www.nsxprime.com/FAQ/Miscellaneous/exhausttheory.htm
www.nsxprime.com/FAQ/Miscellaneous/exhausttheory.htm
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The car might be faster down the track if the power curves picked up better numbers over the geared RPM window, so don't let the dyno fool you. What long tube header is currently being used? The collector design could be degrading power ...
http://speedtalk.com/forum/viewtopic.php?t=3100
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That's why some people will say, "you need a muffler for torque", or, "you'll have more high-end, but less torque, if you run straight exhaust". They are right, but a muffler's purpose is to reduce sound output, ... By reducing back pressure in an exhaust system, you increase high-end horsepower at the cost of low-end torque.
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cloud.prohosting.com/davenger/exhaust1.html
cloud.prohosting.com/davenger/exhaust1.html
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Back pressure, Exhaust velocity and scavenging ... The purpose of the car’s exhaust system is to evacuate gases from the combustion chamber quickly and efficiently. The exhaust gasses do not flow in a smooth stream. Because the gasses are vented at each opening of the exhaust valves there is a pulse of gasses from...
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www.miata.net/garage/KnowYourCar/S4_Back.html
www.miata.net/garage/KnowYourCar/S4_Back.html
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During the exhaust stroke, a good way for an engine to lose power is through back pressure. The exhaust valve opens at the beginning of the exhaust stroke, and then the piston pushes the exhaust gases out of the cylinder.
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www.howstuffworks.com/question172.htm
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The present invention relates generally to an exhaust gas back pressure attenuator for truck exhaust stacks. In particular, the present invention is directed toward an improved exhaust gas deflector that reduces the back pressure within the vertical tubular exhaust stacks of over-the-road type tractor-trailer trucks.
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www.freepatentsonline.com/5722235.html
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It is an object of the invention to provide a plant which will allow to recover the energy of exhaust gases of back-pressure blast-furnaces without necessitating a strong dust removal of the above mentioned kind, while, at the same time, eliminating abrasion.
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www.freepatentsonline.com/3691793.html
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SportsCarForums.com > General Forums > Technical > Exhaust back pressure ... hmmm, back pressure. That's something that I've always wondered about. Why do we need it? What purpose does it serve? A couple of years back, my friend was also metioning this phenomenon when I joked that I wanted to cut off the muffler and...
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www.sportscarforums.com/sitemap/t-13856.html
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Ford Explorer Ranger Enthusiasts Serious Explorations > Repair - Tech - Modifications & Detailing Forums > Under the Hood > Butterfly valve in exhaust for adjustable back pressure? ... The purpose of the valve is to return low end torque that is lost from using a high rpm type camshaft (large overlap).
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www.explorerforum.com/forums/archive/index.php/t-141421...
www.explorerforum.com/forums/archive/index.php/t-141421.html
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