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Horsepower increase witn initial engine breakin?

1827 Views 13 Replies 10 Participants Last post by  maneval69
OK, this is sure to start off one interesting debate! I'm particularly interested in what some of you more advanced "motorheads" think. Check this out

Everybody play nice :happy:
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Hmmm, I dunno about this, sounds good in theory.

You make can make harder steel by firing it, cooling it, fire it up again... cool it.
Then there is exercising... run for a minute, jog for 2, run for a minute, jog for 2...

But does the same thing work for engines? And if so then doing this in the first 20 miles, as he says, has should have NO EFFECT with his method.
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