Pros & Cons of Rebuilding an Engine

The engine is the most complex part of a vehicle. Nearly all of its parts are moving, so a variety of bearings are present. Leak prevention in an engine is handled by numerous seals. Due to constant movement at high speeds, these parts eventually wear out and need to be rebuilt or replaced.

How an Engine Works

An engine works in three stages: a fuel and air mix is delivered to the cylinder; the mix is ignited by a spark plug; and the resulting thrust of the piston causes the crankshaft to transfer power to various wheels and gears that make your car move.

Rebuilt Engine

In a rebuilt engine, any completely non-working parts are replaced with parts that meet or exceed the originals. The rest of the parts are fixed and rejuvenated, and all faults are taken care of prior to reassembling.

Pros and Cons

Rebuilding an engine is cheaper than purchasing a new car, and often the parts used for replacement are better than the originals. Additionally, rebuilds are often backed by a warranty if you go through a reputable rebuilder. However, because rebuilt engines do still contain some old parts, the likelihood of a future breakdown is higher than with a new engine.