Exhaust Manifold: Description and Operation
EXHAUST MANIFOLDDESCRIPTION
The exhaust manifolds (Fig. 99) are log style with a patented flow enhancing design to maximize performance. The exhaust manifolds are made of high silicon molybdenum cast iron. A perforated core graphite exhaust manifold gasket is used to improve sealing to the cylinder head. The exhaust manifolds are covered by a three layer laminated heat shield for thermal protection and noise reduction. The heat shields (Fig. 100) are fastened with a torque prevailing nut that is backed off slightly to allow for the thermal expansion of the exhaust manifold.