Quote:
Originally Posted by kannonvaggon
{Really helpful post!}
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Thanks. That's what I observed, too, about the lugging of the engine.
Also, agreed about bedding in the rings of the engine.
I think that good break-in on many engines is keeping peak cylinder pressures down (no lugging, no full-throttle acceleration, etc.) to prevent blow-by when the rings are still seating. I'm sure that bearings are also polishing themselves during this time (whether ball bearings or bushings).
My Buell motorcycle was interesting. It had a really painful break-in that required keeping engine RPMs very low (less than 1/2 way to redline) for hundreds of miles. The next year, with the exact same engine, trans, oil, etc., they decided that no special break-in was required and that the engine was ready to run full-speed right from the factory! It really makes one wonder how many of the break-in recommendations from manufacturers are based on engineering.
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