Rebuilt Engines & Rebuilt Transmissions

Rebuilt Engines

A rebuilt engines, a mechanic will either save or fix parts based on the amount of wear or damage. Rebuilt engines contain only a few replaced parts, at full cost, and rarely involve machining old parts. This can be less effective in extending the life of the vehicle.

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Rebuilt engines, frequently called overhauled engines, have been dismantled, inspected, cleaned, and their parts are replaced or repaired to update them to current manufacturing specifications. Rebuilding an engine, while labor intensive, costs less than replacing your entire vehicle or engine. Due to the unique process, some parts of rebuilt engines might be as old as the original, slightly used, or brand new, but many manufacturers will offer a warranty anyway. Choosing a rebuilt engine can extend the life of your car and might be a cost-effective option if you know you have serious engine trouble.

 

Technically, rebuilt engines are different from overhauled engines. With rebuilt, or remanufactured engines, a mechanic will either save or fix parts based on the amount of wear or damage. The original manufacturer of your engine, whether from an automobile or boat, is the only one authorized to remanufacture the engine. Much specialized machining is done to ensure that every part works well. However, overhauled engines contain only a few replaced parts, at full cost, and rarely involve machining old parts. This can be less effective in extending the life of the vehicle.

 

Some of the machining done in rebuilt engines includes reforming the piston-cylinder system. The cylinder channels are re-bored and the pistons are fitted to match the larger cylinders. All bearings are smoothed and lubricated. The crankshaft or camshaft might be reground, heads resurfaced, and connecting rods machined and precisely gauged. Other, less expensive parts, could be replaced, such as the timing belt, gaskets, and belts.

 

Since rebuilt engines have different parts with different operating histories, they are not guaranteed to last as long as a new engine. A part that was fine when the engine was evaluated during the remanufacturing process may malfunction after the engine has been re-installed. Yet, the advantage remains that it has been thoroughly inspected. If your vehicle stopped working for one reason, rebuilding the engine may lead to discovering, and preventing, other things that would have otherwise gone wrong.

 


Another advantage to rebuilt engines is that they will now meet current requirements regarding OEM, original equipment manufacturer, specifications. These might have changed since the engine was first produced, and their improvements might make your engine run smoother and more efficiently. If you have an engine with high mileage, especially over 100,000 miles (160,000 km), it might be worth considering rebuilding it.



Automatic Transmission

An automatic transmission is a device that is connected to the back of the engine and sends the power from the engine to the drive wheels.  An automobile engine runs at its best at a certain RPM (Revolutions Per Minute) range and it is the transmission's job to make sure that the power is delivered to the wheels while keeping the engine within that range.  It does this through various gear combinations. In first gear, the engine turns much faster in relation to the drive wheels, while in high gear the engine is loafing even though the car may be going in excess of 70 MPH. 

 

In addition to the various forward gears, a transmission also has a neutral position which disconnects the engine from the drive wheels, and reverse, which causes the drive wheels to turn in the opposite direction allowing you to back up.  Finally, there is the Park position.  In this position, a latch mechanism (not unlike a deadbolt lock on a door) is inserted into a slot in the output shaft to lock the drive wheels and keep them from turning, thereby preventing the vehicle from rolling.



Diesel Engines

A diesel engine is an internal combustion engine that uses the heat of compression to initiate ignition to burn the fuel, which is injected into the combustion chamber during the final stage of compression. This is in contrast to a petrol engine(known as a gasoline engine in North America) or gas engine, which uses the Otto cycle, in which a fuel/air mixture is ignited by a spark plug.

 

It operates using the diesel cycle (named after Dr. Rudolph Diesel). Diesel engines have the highest thermal efficiency of any internal or external combustion engine, because of their compression ratio




 


   






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When choosing an auto service center in US, reputation is one of the important factors that should be taken into consideration. It is extremely vital to ask people around and get their feed back before you let any auto garage even touch your car. If possible try to talk to someone who owns a car that is similar to yours.

Online reviews and forums are also an excellent means to know about any particular US car repair service. You can do an online research from the comfort of your home or office too.

The US auto service that you choose should be able to provide you with the entire range of services. Right from inspection, diagnostics, oil change, engine repair, car tune- ups, replacement of any particular part, simple maintenance to getting the car picked from any place where it may have broken down. Knowledge of the employees in the garage is as important. Well trained professional staff will mean professional and great quality work in the minimum time possible.

You may even consider the size of the US car repair service. Check out the services offered, the facilities and equipments available to handle any hitch in the car. Any service station that can handle problems in luxury automobiles and cars and trucks of foreign make are better equipped for sure. The number of years any auto repair service has been in the business also tells us a lot about the credibility of the services provided by them. Along with all the above stated points consider whether the services available are well within your budget or not.


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