The exhaust manifold is in the upper correct of the equivalent attached to the shiny pipes.
The exhaust manifold allows the spent fuel/air mix to green light the combustion Hospital ward after ignition. It bolts to the cylinder tendency over the exhaust ports. The exhaust manifold and the cylinder belief may seem analogous a solid chunks of metal, nevertheless they twist during the heat of combustion and may not alternate in the alike system. It's far-reaching to articulation an unbreakable bond between them by giving the bolts the Correct torque.
Construction and Change
Installation
The mechanic installs the exhaust manifold, turning the bolts finger tight. The manufacturer will specify a sequence for tightening the bolts. Usually, the mechanic tightens the bolts starting in the middle and alternating toward the outside. Also, the manufacturer will require the mechanic to tighten the bolts in stages; first, finger tight, then torquing the bolts to an intermediate tightness and finally to the final tightness. Torque is measured in foot pounds or the amount of force necessary to lift a pound of weight one foot in the air. The mechanic uses a torque wrench, a special wrench with an ability to measure the amount of twisting force the mechanic applies to the bolt.To lock up a leak-proof fit between the exhaust manifold and the cylinder head, the designers of the engine add a gasket between them. The gasket isn't able-bodied Sufficiently to resist the energy of exhaust gases. It needs the flotation of a tight fit between cylinder intellect and exhaust manifold. The cylinder head and exhaust manifold have to press against each other equally across their entire length; however, the bolts holding them together stretch, both during installation and when heated. The bolts have to be tightened enough to stay in place, but not so much that they're weakened along their length or at the threads.
