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Engine Break-In, How Important?

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Old Aug 20, 2005 | 09:10 AM
  #21  
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Well, the fact is that a (brand new) engine has thousands of small mechanical parts in it.

Since they are factory built, all these metal parts are into tolerance, meaning that they are not fully and to parts of millimeters, in the size they should be.
(I.e. in a racing engine is all pistons and camshafts and ventiles are weighted and measured to the 1/1000.)

So a break in period is a good idea, so that the metal parts can get a time to "meet each other". Actually if you are a perfectionist you'll change the oil and the oil-filter after approx. 2000 miles.
Even though the metal engineering has develped huge in the last few decenniums
the tolerances are still there.
A good example of this development is the new N52B30 enigine with magnesium parts and of course the new M5 and M6 engine witch goes really high on rpm.

A BMW engine will give its best hp after some 30.000 miles!
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Old Aug 20, 2005 | 09:14 AM
  #22  
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Originally Posted by Ricracing' date='Aug 20 2005, 10:10 AM
Well, the fact is that a (brand new) engine has thousands of small mechanical parts in it.

Since they are factory built, all these metal parts are into tolerance, meaning that they are not fully and to parts of millimeters, in the size they should be.
(I.e. in a racing engine is all pistons and camshafts and ventiles are weighted and measured to the 1/1000.)

So a break on period is a good idea. Actually if you are a perfectionist you'll change the oil and the oil-filter after approx. 2000 miles.
Even though the metal engineering has develped huge in the last few decenniums
the tolerances are still there.
A good example of this development is the new N52B30 enigine with magnesium parts and of course the new M5 and M6 engine witch goes really high on rpm.

A BMW engine will give its best hp after some 30.000 miles!
[snapback]161473[/snapback]
I guess that makes me a perfectionist! I always have the oil/filter changed after the break in period to get rid of the break in gunk.
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Old Aug 20, 2005 | 10:09 AM
  #23  
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Originally Posted by stream' date='Aug 20 2005, 12:14 PM
[quote name='Ricracing' date='Aug 20 2005, 10:10 AM']Well, the fact is that a (brand new) engine has thousands of small mechanical parts in it.

Since they are factory built, all these metal parts are into tolerance, meaning that they are not fully and to parts of millimeters, in the size they should be.
(I.e. in a racing engine is all pistons and camshafts and ventiles are weighted and measured to the 1/1000.)

So a break on period is a good idea. Actually if you are a perfectionist you'll change the oil and the oil-filter after approx. 2000 miles.
Even though the metal engineering has develped huge in the last few decenniums
the tolerances are still there.
A good example of this development is the new N52B30 enigine with magnesium parts and of course the new M5 and M6 engine witch goes really high on rpm.

A BMW engine will give its best hp after some 30.000 miles!
[snapback]161473[/snapback]
Really! Is that true? Does it help a bit?

I guess that makes me a perfectionist! I always have the oil/filter changed after the break in period to get rid of the break in gunk.
[snapback]161475[/snapback]
[/quote]
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