Yeah this is my impression as well. Weigh all rods and pistons making them the same. Fit all bearings not in middle spec. Test all valve springs for height, and load power. Making everything uniform.Far as I know, blueprinting a motor has always meant setting every clearance on the motor to the middle of the range allowed.
When Detroit was building junk and tolerance stack ups made a significant difference in performance, then blueprinting meant something. Modern motorcycle motors are pretty much blueprinted at assembly.
It would be ten of the most expensive horsepower you ever gained.No, this was not a joke.
I recently read in a motorcycle magazine about a racing team in Europe using the same bike as mine.
They blueprinted the engine which gave them a 10hp gain in performance.