Torque Specifications for a 5.4 Liter Main Cap
by Manny Jeter
The 2011 Ford Expedition is a full-size SUV offered by Ford. The Expedition was first introduced in 1997 to replace the Ford Bronco in response to the SUV craze of the 1990s. The versatile SUV is considered a luxury vehicle by many and became Ford's largest SUV offered in 2005. It is a part of Expedition's third generation of models and is equipped with the Ford 5.4 L V8 engine.
Main Cap Specs
The main cap bolts connecting the crankshaft to the engine block have two steps of torque. The first step has 30 foot-lbs. of torque and the second step has 990 degrees or 1/4 inch. The main bearing cap nuts connecting the oil pickup tube to the engine block have 19 foot-lbs. of torque.
Connecting Rod Specs
The bolts on the rod connecting the pistons to the crankshaft have two steps of torque. The bolts on the connecting rod have 31 foot-lbs. of torque in step one and 105 degrees in step two.
Cylinder Head Specs
The bolts connecting the camshaft to the cylinder head have 8 foot-lbs. of torque. The bolts connecting the cylinder head to the engine block have 30 foot-lbs. of torque in the first step and 90 degrees or 1/4 of torque for the second and third step each. The studs connecting the exhaust manifold to the cylinder head have 18 foot-lbs. of torque while the studs have 9 foot-lbs. of torque. The intake manifold has 1.5 foot-lbs. of torque in step one and 18 foot-lbs. of torque in step two. The spark plug connected to the cylinder head has 10 foot-lbs. of torque, and the bolts connecting the valve cover to the cylinder has 8 foot-lbs. of torque.
Engine Dimensions
The Ford 5.4L V8 engine has a bore/stroke of 3.555/4.17 inches and a compression ratio of 9.8 to 1. It has a displacement of 330 cubic inches, or 5.4 L. The engine uses a sequential fuel injection (SEFI) system and runs on flex fuel. It has a single overhead camshaft (SOHC) with three valves per cylinder for a total of 24 valves.
Engine Performance
The 2011 Ford Expedition has a peak horsepower of 310 hp at 5,100 rpm and a peak torque of 365 foot-lbs. at 3,600 rpm.
References
Writer Bio
Manny Jeter began writing in 2005. He has written for the newspaper "Daily Collegian" and the website CampusLive. Jeter completed the entrepreneurial initiative workshop and earned a Bachelor of Arts in journalism at the University of Massachusetts.
