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Engine
Rebuilt Engine
When a car or truck suffers major engine damage, the first reaction of most vehicle owners is to buy a new or used car or truck. This makes sense in some cases, but often, it isn’t necessary. Repowering your car or truck’s worn out engine with a rebuilt/remanufactured engine can also be considerably less expensive than buying a new or used car. A rebuilt engine is one that is remanufactured to prescribed standards and specifications by highly-skilled machinists using state-of-the-art equipment and components. During this process, many of the new components installed meet or exceed original equipment performance standards. Frequently, rebuilt engines are superior to new car engines because better parts are used, or design changes in parts correct problems with the original engine. Rebuilt/remanufactured engines are dependable, reliable and backed by warranty programs. A rebuilt engine gets better gas mileage than a worn-out engine and emits fewer pollutants. Engine repowering also saves energy related to processing discarded engines and cars. The savings from engine repowering is notable when compared to the prices of new cars and trucks. A rebuilt/ remanufactured engine purchased and installed at an average cost of $2500 - $3500 is a sound and attractive investment. Typically, a professionally rebuilt engine comes with a one-year or 12,000-mile warranty but some of these warranties can be as long as 36 months or 36,000 miles. Check with your local repair shop for information on their rebuilt engines and warranty programs.
What is it?
An engine is a mechanical device that produces some form of output from a given input. When the purpose of an engine is to produce mechanical power from a fuel source it is referred to as a prime mover; alternatively, a motor is a device which produces mechanical power from other forms of energy (such as electricity, a flow of hydraulic fluid, or compressed air). An automobile makes use of several motors to start the car and drive the car's various pumps (fuel, power steering, etc) – but the power plant that propels the car is called an engine. The term 'motor' was originally used to distinguish the new internal combustion engine -powered vehicles from earlier vehicles powered by a steam engine (as in steam roller and motor roller).
Symptoms:
Overheating can cause preignition. Hot spots develop inside the combustion chamber that becomes a source of ignition for the fuel. The erratic combustion can cause detonation as well as engine run-on in older vehicles with carburetors. Hot spots can also be very damaging and burn holes right through the top of pistons.
Another consequence of overheating may be a blown head gasket. Heat makes aluminum swell almost three times faster than cast iron. The resulting stress can distort the head and make it swell in areas that are hottest like those between exhaust valves in adjoining cylinders, and areas that have restricted coolant flow like the narrow area that separates the cylinders. The typical aluminum head swells most in the middle, which can crush the head gasket if the head gets hot enough. This will cause a loss of torque in the gasket allowing coolant and combustion leaks to occur when the head cools. Overheating is also a common cause of OHC cam seizure and breakage.
If the coolant gets hot enough to boil, it may cause old hoses or an age-weakened radiator to burst under the increased pressure. Pistons may swell up and scuff or seize in their bores, causing serious engine damage. Exhaust valve stems may stick or scuff in their guides. This, in turn, may cause valves to hang open which can damage pistons, valves and other valve train components. And if coolant gets into the crankcase, you can kiss the bearings and bottom end of the engine goodbye.
Maintenance Tips:
• Change oil and filter at least every 6,000 miles
• For long-term ownership, stop-and-go driving and tougher driving conditions, change oil and filter every 3,000 miles
• Check timing belt at 20,000 miles and replace it at 30,000 miles
• Change air-filter every 10,000 miles. Dirt entering the engine through the intake manifold is as damaging as dirty oil
• Adjust valves on overhead cams every 20,000 miles
• Change spark plugs every 20,00 miles
• Change spark plug wires every 30,000 miles
• Change PCV valve every 30,000 miles
• Change cap and rotor every 20,000 miles
• Check idle speed every 20,000 mile
• Change crankcase ventilation filter every 30,000 miles
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