Specifications of a Bolt Torque
A bolt is a type of screw used as a fastener on vehicles. Bolts are the main fasteners used on the engines of vehicles. Apply a certain amount of torque to each bolt to secure the engine in its place. Apply too much and your engine may be restricted in its performance, but if you apply too little torque you run the risk of your engine falling out while you are driving at a high speed. The amount of torque applied to bolts used on a Ford Mustang Engine as an example.
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5.0 Mustang
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The 5.0 Mustang is Ford's flagship performance vehicle. Ford offers it as an upgrade option when purchasing a Mustang. The car is very fast and the engines are widely praised for having a large amount of low-end torque and enough horsepower to spare.
General Engine Bolt Torque Specs
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Thirty-three foot-pounds of torque tighten the bolt connecting the bell housing to the engine block, while the bolt connecting the fuel pump eccentric to the timing chain or belt sprocket tightens with 42 foot-pounds of torque. The fuel pump eccentric is a disk located on the camshaft of the engine that allows the lever on the fuel pump to rotate. You tighten the bolt connecting the thrust plate to the engine block with 8 foot-pounds of torque. The bolt connecting the timing chain to the engine block tightens with 13.5 foot-pounds of torque.
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Crankshaft Bolt Torque Specs
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The rod cap bolt on the rod connecting the pistons to the crankshaft has 45 foot-pounds of torque. Assemblers cap bolts connecting the crankshaft to the engine block with 40 foot-pounds of torque and the bolts connecting the pressure plate to the flywheel with 35 foot-pounds of torque. They tighten bolts connecting the flywheel to the crankshaft with 80 foot-pounds of torque, as are the bolts connecting the vibration damper to the crankshaft, applying 80 foot-pounds of torque.
Oil Bolt Torque Specs
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Assemblers tighten the bolts connecting the oil pan to the engine block with 10 foot-pounds of torque, while the bolts connected the oil pan to the timing cover and rear main bolts receive 18 foot-pounds of torque. The bolts connecting the oil pump to the engine block tighten with 25 foot-pounds of torque.
Intake Manifold and Cylinder Head Bolts Torque
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Assemblers tighten the bolts connecting the intake manifold bolts to the cylinder head with 12 foot-pounds of torque in step one, 20 foot-pounds of torque in step two, and 22 foot-pounds of torque in step three. Assemblers also tighten the bolts connecting the thermostat housing to the intake manifold with 13.5 foot-pounds of torque. They tighten the bolt connecting the valve cover to the cylinder head with 4 foot-pounds of torque.
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References
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