Q: What Advantages Are There of Rebuilding an Engine Rather Than Replacing It?

asked by on December 02, 2015

What advantages are there for rebuilding an engine rather than replacing it?

When you are looking at the question of whether you should rebuild or replace a motor, you will first have to assume the original motor is rebuildable. If you do not know if your engine is rebuildable then the engine would need to be taken apart and inspected piece-by-piece to determine the parts that can be reused and parts that have to be replaced. To determine what advantages you will have by rebuilding your own motor or replacing your motor, you need to make a list of what you want to do. For instance, you can have your engine block cylinders enlarged and larger pistons put in so you can increase the engine’s cubic inches size. This will increase the horsepower. You can also replace the camshafts, cylinder heads, and intake manifold with high performance parts. This can have a drastic change to your engine power output. When you decide to increase the engine performance by using performance parts in the engine you will need to keep in mind that the fuel injectors, fuel system, cooling system, or other systems may need modifications to work with the performance improvements of the engine. Before you decide to rebuild your engine, you need to look at total cost versus benefit of the rebuild. You should know what you are putting in the engine and control every part and process to rebuild it.

A replacement engine you get will be most likely a remanufactured engine. Different rebuilders do different rebuilds and you only have control over who you purchase the engine from and not how they rebuild it or what parts are used. Some rebuilders may offer performance packages of different ranges. You may have some rebuilders that offer custom rebuilds that you can purchase or they may need your motor to do a rebuild for you if there are no engines in stock.

The bottom line is you can buy a crate motor with no control of what went into the rebuild, or rebuild your motor and control what goes into the motor. The quality of the parts and performance improvement parts can be controlled in your own rebuild.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

How does the engine immobilizer work?

The engine won’t start on if the key hasn’t been registered with the computer on the vehicle. Engines without a smart key system The indicator light is located on the center display and will flash after the key has been...

poor acceleration check engine

You will want to have the catalytic converters checked. The 540's are notorious for the catalyst inside the catalytic converters breaking apart from the outer wall of the assembly and rattling around, especially upon take off. This will also create...

Car engine turning over, but not starting.

There are many reasons why a car will crank but not start. Your engine will not start unless it has fuel, air, spark, and compression. If any one of the four components are missing you will have a crank, no...

Related articles

What Is Engine Braking?
Drivers can use engine braking to slow the speed of their engine and vehicle. Engine decompression helps your brakes last longer and car stop sooner.
Top 10 Bad Driving Habits That Damage Your Car
Even the best drivers are guilty of bad driving habits. Riding the brakes, not warming up the engine, and ignoring warning signs will damage your car.
How Are Sensors Used to Improve a Car’s Performance?
Modern vehicles utilize a series of car sensors to improve performance and reduce emissions. The oxygen sensor helps reduce tailpipe emissions.