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Just thinking about how hard it is to do an engine swap makes my head spin without even doing the actual work. I am a professional technician writing this article, and even with my many years of experience I still have a difficult time sometimes with engine swaps.
Not all engine swaps are created equal. Some are easier than others, and vice versa. An engine swap can definitely be done by a total newbie, but you’re going to pay the price for doing it for the first time.
What I mean by that is you have to figure out how to do everything in that instance, and it can be discouraging.
Not only it can be discouraging, but it is also very dangerous if you do not know what do when it is time to extract the engine from the vehicle.
Let’s not forget about all the tools that are needed to get the job done. A total newbie performing this task with cheap tools is playing with fire. An example of a cheap tool: include dollar store tools from China.
When an engine blows it does a few things. it makes noises that sound like marbles in a can, and that noise usually comes from the bottom end of the engine. The engine turns over but doesn’t start. it will give the indication that there is no fuel or spark going to the engine.
Compression test– test allows you to see the engine is able to produce enough compression to start the engine. If an engine compression is too low, the engine will not start.
Leak down test– A leak down test allows you to see if the piston rings inside of the engine are able to hold pressure within a particular specification.
Visual inspection– A visual inspection allows you to see if there is any damage to the engine. Sometimes when engines blow up it shoots the engine rod through the engine block or puts a hole in the engine pistons.
To do a compression test in its simplest form is done as stated below. You will need a compression tester to complete this test. Source: Gregsengine.com
Interpreting the readings.
An engine can blow up for many reasons.
The amount of time that it takes to do an engine swap solely depends on the amount of experience that person has and if you have the right tools to get the job done.
As said, in the beginning, some engine swaps are easier than others.
At the time of writing this, I am doing an engine swap on a 2004 Honda accord 4 cylinder engine. Because I have experience and the right tools to get the job done it took a total of 6 hours.
An inexperienced person doing this would have taken them maybe two full days or more. In order to have an idea of how long it will take to do an engine swap on your particular vehicle, you will need to get access to an online car repair manual.
I’ve seen engine swaps go for as much as $$2500-$3500. An engine swap depends on the year make and model of the vehicle. The car brands such as Mercedes-Benz, BMW, Audi will cost at least 1000 more than other vehicles to repair.
I’ve used repair pals auto repair estimator on more than one occasion to see what it cost to repairs on a particular vehicle.
There is a certain kind of precaution that needs to be followed if you want to buy a salvage engine. Salvage yards and junkyards intentionally and unintentionally leave information from customers in order to make a sale.
What I’ll share with you next will allow you to not be blindsided by miss information by salvage yards.
Don’t ask too many questions because they’ll never tell you everything. They’ll only give the sweet stuff to get you to buy. Do these few things and you’ll be more than equipped to buy any salvage engine from most makes and models.
Step 1.
Remove engine oil cap and look for any milky residue. If you see a milky substance that is a sign of either a blown cylinder head gasket or maybe water leaked inside the engine while being stored and the salvage yard.
Step 2. Turn crank pulley to verify that engine goes through full motion cycle.
Step 3. Remove the oil pan and oil filter if accessible and inspect for metal shavings or oil and water mixing.
For the oil filter remove it and drain into another container and look for any metal particle in the oil or attached to filter microns.
If you find any of these abnormalities, then pass on the to the next engine.
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