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Originally Posted by castex
Studies have shown that an engine thraped to within an inch of its life from day one will actually pull harder, perform better over its now significantly shortened lifespan.
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that is because when you start off with a new engine, the cylinder walls have a cross-hatch pattern on them... if you don't run the engine like a madman on those first few miles what happens is the piston rings do not get worn down by the cross-hatch pattern, you want the rings to get worn down so they fit and seal with the cylinder perfectly....
the cross-hatch pattern goes away after a short time wether or not the rings have been worn down accordingly...
at all automotive plants, after they assemble your car/bike/snowmobile whatever they start it up and rev the crap out of it... so there goes the whole do not cross 3K RPM for the first 100 miles crap...
oh, change the oil after the frist 10 miles. Microscopic peices of metal are floating around in there, and if you dont get them out, they will end up inside bearings and and you'll get more friction in them, i.e. less power...