BMW 2002 Engine Swap (Safety, Precautions & Cost)

Swapping engine is not an easy task. Before you dive into it, you need to be sure about what you are thinking of doing.

For BMW 2002 engine swap, you need to be extra careful. The engine is expensive, and every part replacement will also cost you a good amount of money. And if you don’t swap it well, you will incur a lot of costs.

In this article, we will discuss with you precautions for BMW 2002 engine swap. You need to put into mind these critical things before starting the actual swap.

BMW 2002 Engine Swap [Quick Summary]

A BMW 2002 engine swap involves replacing the vehicle’s original engine with a different engine. This can be done for a variety of reasons, including improving performance or replacing a damaged engine.

What is an Engine Swap

An engine swap is exactly what it sounds- replacing a car’s original engine with a new one. It’s done to improve the performance of the vehicle. But at certain times, an engine swap is also done to repair a car. 

While swapping an engine, you get two options. You can choose an engine that can work perfectly in your car, or you can even select a totally different engine. But remember that swapping a new engine is different and tricker than swapping a manufacturer-approved alternate engine. 

That’s because when you put in completely different engines, you are also required to make changes to the car to fit the engine. It is done to ensure all the car components are working properly with the new engine. 

Is an Engine Swap Hard

Honestly, engine swapping isn’t simple because so many things go into taking one engine out and putting in another one. 

It’s a lengthy process that requires planning and researching. In addition, engine swapping requires the mechanic to stay under the hood to complete the work properly. If the engine is not installed properly, it will fall out while driving. 

Once the engine is mounted, the professionals must make sure that the engine’s power is getting transferred to the wheels. For the power to be transferred, sometimes it’s also required to make heavy modifications to the vehicle. 

The engine swap process also includes the proper placement of air and coolant in the engine. When these two things are properly placed, the coolant fills, and air flows around the engine. And back to the radiator again. 

This is not it. The swapped engine must also send the electronic signal to the dash. Thus, the new engine needs to be wired properly.  

Can You Swap Gas Engine to Diesel

Yes, you can swap gas engines to diesel, but a few things must be considered when doing so. 

If you want to run a diesel engine to your vehicle, you must do some work. And remember, there must be no room for mistakes. Below are a few things that you must remember.

  • Compared with a gas engine, a diesel engine is heavy. Thus, you should have a plan to keep structural integrity. 
  • It’s important to analyze the dimension to ensure that the new engine will fit properly in the bay. 
  • If you want to go up in horsepower, you must address the axle and transmission. That’s because they won’t survive the torque of a more powerful engine. 
  • When you plan to swap gas engines with diesel, your car must undergo additional inspection requirements.

Precautions For BMW 2002 Engine Swap

BMW 2002 engine swap is not something you should take lightly. There are critical things you should put into consideration if you wish to get the best out of the swapping.

BMW 2002 Engine

The following are some of the critical things you need to pay attention to.

1. Use The Right Tools

When swapping your BMW 2002 engine, the first thing you need to put in mind is the right tool. It should come without even thinking about it.

Before you start the work ensure you have all the right tools you need to get, the work started. For your engine, the essential tool you should get is an engine hoist. It will help you remove the old engine and put the new one in place with a lot of ease. Without an engine hoist, you will regret swapping your engine.

Strongway Hydraulic Engine Hoist is the best you will find in the market. It’s affordable, and most importantly, it’s one-time buy equipment. Once you buy it, you won’t have to worry about rebuying it.

Key Features

  • Constructed with a high-grade and robust steel
  • Resistant to dirt, grease, and oil
  • Durable

The Strongway Hydraulic Engine Hoist is available on Amazon. Click here to check the latest price and buy it for your BWM 2002 engine swap.

Once you have an engine hoist, you can, therefore, proceed to get other relevant tools for your work. In this case, ensure you have all of the following devices for your engine swapping. Click to each one of them to check their latest price on Amazon and buy them.

We highly stress this point. If you dare use wrong tools to swap your engine, you might end up destroying an entire engine. And that will cost you a lot of money.

2. Understand It’s Not An Easy Task

It’s important to understand that BMW 2002 engine swap is not an easy task. You will spend much time trying to get everything done correctly. If you are not careful, you might try it and end up with junk at the end of the day.

That’s why we recommend that you get a professional to do it for you if you are not confident enough. You must have some basic knowledge of car engines to swap them successfully.

With knowledge about engines, you will also understand other requirements such as weight. And this will ensure that you get an engine that will perfectly fit on your BMW 2002.

3. Don’t Dare Force Anything

As you swap your BMW 2002 engine, you might find out that some pieces don’t go together. If this happens, the worst thing you can do is to force anything to go where it’s not fitting.

The result of this could be considerable damage which would destroy the entire engine or put the engine at risk. Damaging anything on the engine will lead to a very costly replacement. And that would be the last thing anyone would want.

4. Understand the Risks of Engine Swaps

bmw 2002 engine swap

First, you should understand the level of risk that you put yourself and car into when you are swapping your car engine. The risks will help be careful and figure out how to do it better.

People who don’t understand this will do shoddy work that could lead to a faulty engine. So, we recommend that first understand the complexity of the whole process. Understand you are facing the following risks.

  • Damaging your engine
  • Flames
  • And total car failure

And this is why you need to conduct proper research before beginning the entire project. Research on the engine you are about to put in your car. You don’t want to start a whole project, finish it, only to find out that you did everything wrongly. Worst of all, you don’t want to begin your work only to blow your car engine.

5. Drain Oil And Coolant Before Anything

If it’s your first time to swap an engine, you are most likely to forget this critical factor. Draining coolant and oil is something most people don’t remember to do. Check the gasoline tank if there is any fuel and remove it.

This process would ensure that you don’t mix any fluid in your engine. For instance, mixing steering fluid and oil would be another problem you would have to deal with later. That’s why it’s crucial to drain all fluid from your engine before you begin the actual work.

Read Also: How To Remove Stuck Oil Drain Plug

6. Remove Every Attachment On the Engine Block

Your engine is attached to pipes and cables. Before you begin, it’s advisable to remove any attachment over it. This will make your life easier when it comes to removing your car engine.

Don’t make a mistake made by most people who try to work around their engine with all the attachments on the engine. If you do that, you will pay dearly for it. In fact, anything that you leave hanging might cause much more problems to your engine.

Pros and Cons of Engine Swap

An engine swap is a lengthy process that helps increase the performance of a vehicle. But it has certain advantages and disadvantages. You must have an idea of the pros and cons to know what you are signing for with the engine swap. 


More Power

It comes without saying. When you swap your car’s engine, it results in more power. If you are swapping the engine for non-maintenance reasons, you can upgrade the vehicle. 

Easy to find Parts 

The best thing about engine swap is that you get an option to choose an engine that comes with a wider selection of aftermarket parts. So, if your car has an old engine whose parts are difficult to find, replace the engine with a new one. 

Save Money

An engine swap is surely a lengthy and expensive process. But if you compare the cost of engine swap with buying a used vehicle, you would realize that swapping is affordable. 

More Reliable

Swapping an old engine with a new one makes your vehicle more reliable. But the reliability depends on the kind of engine you are selecting for swapping. 



One of the biggest disadvantages of engine swap is that it’s really expensive. To get the best engine swap service, you must pay around $3000. 

Since engine swap is a costly affair, it’s advised to do detailed research before taking the vehicle to a machine to get the service. 

Time Consuming

If you are planning to get an engine swap service, you must have enough time for it. At a minimum, the engine swap service will be completed in 4-6 hours. And again, 1-2 hours to check that the engine is working efficiently in the vehicle. 

However, if you want a completely different engine installed in your car, the swapping process will take more than expected. The time can even extend depending on the mechanic’s skills, engine type, and car model. 

You Might Have to Change Transmission

An engine swap is not just limited to changing the old engine with a new one. But sometimes, it might require you to change the transmission as well—the chances of changing transmission increase if you choose a different engine for installing in your car. 

Emission Concerns 

After getting an engine swap, you might also have to undergo emissions inspections. 

Engine Swap Basics 

Check off this list of engine swap basics to ensure that your daydream doesn’t become a nightmare. 

Do your Research 

Before you take your vehicle for engine swapping, do your research. That’s because you would not want to be elbow deep in a project only to realize that a new engine is not available to the chosen transmission. 

When selecting an engine, it’s not recommended to go overboard as at certain times; vehicles can’t cope with different power, brakes, and fuel system. 

Find the Right Partner

A car engine swap is not easy and if you want the work to be completed properly, find the right partner. With a team of professionals on your side, you can turn your dream into a reality. 

Consider the Horsepower

Remember that if the horsepower is more, it will affect braking and suspension.

Make Sure the Engine isn’t too Heavy

Heavy engine and the part where the weight comes impact how the vehicle’s handling was originally designed. If you wish to do an engine swap that is different in weight, distribution, and dimension, you would have to change a lot more things than just mounting points. 

Get all the Parts Together

Engine swapping doesn’t mean that you are only swapping engines. It also means swapping other parts of the care system, including sensors, transmission, computer hoses, pedals, and more. 

To make the engine work together, you have to analyze and decide what parts will work together. 

Put Safety First

When you take your vehicle for engine swapping, it’s important to think about the safety and fire risks. 

Fuel and Cooling System

The engine you choose should be compatible with the cooling and fuel system. If the new engine is not working properly with the fuel and cooling system, you would have to replace other parts further. 

How Much Does Engine Swap Cost

As we have already discussed, an engine swap is a costly affair. So, if you are planning to get an engine swap, you should have a good budget. The cost is also influenced by a variety of factors, which includes:

Choice of Engine

Depending on the type of engine you want to be installed in your car, your budget will increase or decrease. You can save your money by doing detailed research. This way, you can find the best engine that fits your budget as well.  

Choice of Transmission 

Along with the engine, the type of transmission you choose can also increase your overall budget. 

Frequently Asked Questions 

How long does it take to swap BMW engines?

If you want to swap BMW engines, you must have sufficient time because the swapping process can take anywhere between 8 to 15 hours. The time can further increase depending on the car’s model, type of engine work, and mechanic’s skill. 

Why should you swap the engine of a BMW?

Swapping the old engine with a new one helps you get freedom from limited performance. A new engine brings more torque and power, which improves the vehicle’s performance. 

Is an engine swap worth it?

Honestly, the engine swap is totally worth it because it basically upgrades the old car and helps it offer better speed. With engine swap, you also get reliability. 

How difficult is the engine swap?

Engine swapping is more time-consuming than being hard. The difficult level of swapping usually depends on the type of swap selected.

Parting Shot

When it comes to swapping your BMW 2002 engine, you need to take every precaution to ensure that everything is done properly and up to the standards. If you don’t take every necessary precaution, you pay a huge price of replacing costly parts of your engine.

The worst of it all will happen when you damage the entire engine, and you will be required to replace it.

To be on the safe side, apply all the precautions we have discussed in this article. These will help you get your engine swap done quickly and appropriately.

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