How to Put a New Engine in a Car

Getting your car fixed can be a hassle. You have to find a mechanic who is open on the day you want to come in, you have to figure out what type of service your car needs, and you have to wait around. With so many things going on, it’s no wonder that people are looking for ways to save time and money when it comes to getting their car serviced.

In this article, we’re going to show you how to put a new engine in a car yourself. This is a task that many people put off because they don’t know how or think it’s too complicated. But with the right tools and knowledge, it’s actually quite easy!

Remove the Old Engine

You will need the following tools and supplies to remove the old engine: a large socket set, ratchet and extension, 10mm socket, 15 mm wrench, T25 torx wrench, oil filter wrench, jerry can of oil, wire brush
1. Loosen the bolts that secure the engine to the car using a 10mm socket. Note: The two front bolts are on opposite sides of the car.
2. Remove the engine from the car by lifting it straight up and out. Be sure to support the weight of the engine while removing it so you don’t damage it.
3. Place the engine on a flat surface and disconnect all of its electrical connectors. be sure to label each connector as you disconnect it so you can reconnect it in the correct order when you install the new one.
4. Remove the bolts that secure the upper fan shroud to the radiator support panel. Carefully pry off the shroud with a 15 mm wrench and then remove it from the car.
5. Remove the four bolts that secure the air conditioning condenser to the frame of the car. Carefully pry off the condenser with a T25 torx wrench and then remove it from the car.

Check the Condition of the Crankcase

If you’re looking to put a new engine in your car, you’ll want to be sure to check the condition of the crankcase. A faulty crankcase can lead to serious engine problems, so it’s important to take care when inspecting it. Here are four ways to check the condition of your crankcase:

1) Listen for noises: A defective crankcase can make a lot of noise, so it’s important to listen for any strange noises it might make. If you notice any rattling or grinding sounds, there may be a problem.

2) Check for leaks: Another sign of a defective crankcase is leaking oil or gasoline. If you see any fluid seeping out of the engine, there may be a problem. Check for signs of oil or gas leaks by looking for puddles or pools of liquid on the ground beneath the car.

3) Look for scoring or indentations: Sometimes, defects in the crankcase can cause noticeable damage to the metal. This damage can be seen as scaling, scoring, or indentations on the surface of the crankcase. If you notice any of these signs, there may be a problem with the engine.

Remove the Piston Rings and Cam Bearings

Removing the pistons, rings and cam bearings from an engine is a necessary step in many repairs. Here are some tips on how to do it safely.

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1. Disconnect the spark plugs and remove the fuel lines and filters.
2. Remove the 6 bolts that hold on the top of the engine block. Be sure to loosen them evenly so they don’t fall off while you’re working.
3. Move the engine block forward or rearward until you can see the camshafts and pistons sticking out of their respective cylinders.
4. Loosen each camshaft bolt alternately, being careful not to overtighten them as they may break off if too much force is used. Once all bolts have been loosened, lift up on the camshafts and push them out of their cylinders.
5. Carefully remove the pistons from their bearings by using a pry bar or a vise grips (be sure to use a protective glove). If one of the pistons has oil or coolant inside it, be sure to blow out any residue before removing it from the bearing.
6. Clean all parts of the engine block.

Remove and Replace the Cylinder Heads

If you have a used car, it’s likely that the engine has been replaced with a new one at some point in its life. If your car is still under warranty, you may be able to get it replaced with a new engine. But what if you don’t have warranty? Or what if you’re just looking to save money? Here are the steps for removing and replacing the cylinder heads on a car without a warranty.

1. Disconnect all of the connectors on the engine block. This includes the spark plugs, fuel lines, and air intake lines. You’ll also need to remove the oil pan and serpentine belt.

2. Remove the bolts that hold each head on and then carefully pry them off of the engine block. Be careful not to damage any of the camshafts or valves while you’re removing them.

3. Once all of the heads are off, you can clean them up with a rag or a shop towel. Make sure to remove any rust or corrosion from around the valves and camshafts.

4. Install new head gaskets using either silicone or gasket maker. Apply pressure to the gasket until it seats in place.

Assemble the New Engine

If you’re a car enthusiast and have been itching to put a new engine in your ride, you’re in luck. Here’s everything you need to know to get started.


Before anything else, you’ll need to decide what type of engine you want to install. There are a lot of different types and sizes of engines out there, so it can be tough to make a decision. If you’re not sure what you need, talk to a mechanic or car dealership.

Once you’ve chosen the type of engine, take some time to research which one is best for your vehicle. You might also want to consider your budget and how much power you need. If you have a 4-cylinder engine, for example, don’t buy an 8-cylinder engine just because it’s more powerful. It might not be compatible with your vehicle and could damage it.


In order to install the new engine, you’ll need some specific parts. You’ll need an engine block, cylinder head(s), pistons, crankshaft (if applicable), camshaft (if applicable), oil pan, timing belt.

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Information contained herein is for informational purposes only, and that you should consult with a qualified mechanic or other professional to verify the accuracy of any information. DynoCar.org shall not be liable for any informational error or for any action taken in reliance on information contained herein.