http://autoandbikeshow.com 2010 NJ Auto & Bike Show Sun, 02 Jan 2011 23:10:41 +0000 hourly 1 http://wordpress.org/?v=3.0.4 http://autoandbikeshow.com/2010/06/post-2/comment-page-1/#comment-58 Corrine Langholdt Sun, 02 Jan 2011 23:10:41 +0000 http://autoandbikeshow.com/test/?p=38#comment-58 In addition, most of the standard exhaust manifolds are made of cast-iron, because it is vastly cheaper and much quicker to manufacture than a crafted branch exhaust manifold. The weight and the thermal characteristics of the cast-iron, however, limit the length of the individual runners, and its shape causes the gasses to follow some abrupt turns. In addition, most of the standard exhaust manifolds are made of cast-iron, because it is vastly cheaper and much quicker to manufacture than a crafted branch exhaust manifold. The weight and the thermal characteristics of the cast-iron, however, limit the length of the individual runners, and its shape causes the gasses to follow some abrupt turns.

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