Patent ID: 7124575
Filing Date: 2006-10-24
Classification: F01N

Abstract:
1. An exhaust header modeling apparatus to aid in designing and constructing engine exhaust header configurations, comprising: a plurality of interchangeable short straight cylindrical segment members and curved cylindrical segment members, each having an outside diameter of a size corresponding to a known outside diameter of conventional exhaust header tubing, a first end and a second end, and connector means at said first end and at said second end for releasably connecting together said first end of one of said segments to said second end of another one of said segments in end-to-end relation and allowing relative rotation therebetween; and said outside diameter of said straight cylindrical segments extending along a straight longitudinal center axis, and said outside diameter of said curved cylindrical segments extending along a curved longitudinal center axis; selected said straight and curved segments being releasably connected together end-to-end and manually rotated relative to one another to form a full-scale three-dimensional model of a desired engine exhaust header configuration which is used as a template for forming and constructing an exhaust header configuration from metal tubing.