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Usually to seat the rings and bearings. When an engine is built there are stresses from things not fitting perfectly that will wear into a perfect fit if the engine is treated correctly in the first few hundred miles. There is little indication that this is needed in modern engines. But it is an idea that has stuck around. Historically engines were run in at a slow speed to allow the piston rings to 'bed in', i.e. any irregularities on them and the inner surface of the engine cylinders (known as the bore) to be smoothed out to ensure a good seal could be achieved between these components - thus providing greater power and efficiency. Modern production methods now guarantee a far better finish to these components; however some people would still argue that it is advantageous to 'break in' a new engine to help provide more power and it ensure a better longevity for that engine.
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Can synthetic oil be used in a new engine?
After the break in period it is not an issue.
How important is it to break in a new engine?
The best article I've read on the web concerning 4-stroke engine break in, can be found here: http://www.mototuneusa.com/break_in_secrets.htm--Rayengine break in is very important, proper break in will help ensure long engine life.
How do you break in a stock new clutch on a Chevy?
If it was installed properly there is no need to break it in.
How long does a reconditioned engine take to break in?
The myth is that it takes about 1000 miles of "babying" the new engine. Then change the engine oil again.
What do you do if you break the flywheel installing new engine on traxxas revo RC car?
This might not help... Get a new one.
Can you use synthetic oil in a new engine?
For the first 1600 km's or 1000 miles on a new engine just use regular oil. The reason being is that you want MORE friction in the engine to help the parts wear properly for a good "break in", synthetic oil has such good lubrication properties that it can interfere with proper engine break in.
Does new car cannot go over speed of 100 until break in?
It is not the speed that will ruin a new car engine, it is too much heat. Do not drive fast or rev up the engine for more than a minute or two, then let it cool off. This is actually a good way to break in an engine.
Need new engine for 2001 gran am se 2.4 leater?
I am looking for a new engine for my 2001 gran am SE
If you put a different engine in your car do you need to put in a new wiring harness too?
On newer fuel injected vehicles you will usually need a new wiring harness and engine computer to match the engine you are putting in. You will also need various sensors for the new engine such as mass airflow sensors and intake air temperature sensors.
What if motor not running because you had to put a cam in it?
I dont understand what you are asking. If the cam is bad the engine will still run just real bad.And running it with a bad cam could destroy the engine. Now if you mean put in a new cam,you will need new lifters and new valve springs with retainers and new valve stem seals. Also you have to "break in" a new cam, if you dont do it right it will fail within a few minutes. You need to be way more clear on what you are asking.
What do you need to do if piston rings are seized?
Buy a new engine.
Will timing belt breaking cause engine damage to Citroen Saxo 1.1 engine?
yes! new valves etc, will mmost likely need new engine
