Exhaust system for engine

摘要

An exhaust system for an engine having at least four exhaust ports firing in sequential order. The exhaust system includes an exhaust manifold having two collector sections which extend in substantial part in parallel side-by-side relationship to provide a compact construction. Each collector section is served by a pair of branch portions that communicate with respective cylinders where the cylinders collected firing at least 270 degrees from each other to minimize the effect of the exhaust pulses from one cylinder on the other cylinders.