Providing TOP QUALITY 
service at the LOWEST rates in town.  
© All Rights Reserved Copyright Accurate Auto Works - 2001
(951) 780-2743
16045 WOOD RD # 6, RIVERSIDE, CA 92508


Rebuilt engines, frequently called overhauled engines, have been dismantled,

inspected, cleaned, and their parts replaced or repaired to update them to current

manufacturing specifications. Rebuilding an engine, while labor intensive, costs less

than replacing an entire vehicle or a new engine. Due to the unique rebuilding process,

some parts 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 a car and might be a cost-effective option for drivers who know that they have

serious engine trouble. Technically, engines that are rebuilt are different from those

that have been overhauled.

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 the engine, whether

from an automobile or boat, is the only one authorized to remanufacture it. Much

specialized machining is done to ensure that every part works well. Overhauled engines,

however, 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 the rebuilding process 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, such as the timing belt, gaskets, and belts, could be

replaced. 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. The engine has been

thoroughly inspected, however. When a mechanic rebuilds an engine, he or she may be

able to find other, previously undiagnosed issues that can be fixed before they cause

problems. Another advantage is that the engine will meet the requirements for original

equipment manufacturer (OEM) specifications. These might have changed since the

engine was first produced, and their improvements might make it run smoother and

more efficiently.

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