Jerry,
I'm guessing the term has been diluted like most other language these days. Most are probably just used a substitute for rebuilt, which in itself is a lot weaker than it used to be.
I build/rebuild antique and classic motorcycle engines. My definition of blueprint is:
* measure EVERY fit in the motor (bushings, shafts, bearings, end plays, runouts) and rectify if out of spec
* inspect EVERY part for serviceability. . . dimensions, surface condition, cracking, heat discoloration, etc
* calculate actual static compression using good old geometry/math and CCing the combustion chambers. From this, determine need (if any) for decking/milling various components and gasket thicknesses
* confirm flatness and condition of all mating faces and flanges
* replace every seal, gasket, retaining clip and other locking mechanisms (tab washers, roll pins, taper pins, etc)
* replace all ball/roller/shell bearings. replace bushes where out of spec or show wear
* clean/paint/polish/plate/finish all external parts where appearance is a concern (I'm in the clean camp, but don't waste much effort on the other stuff . . . mechanical perfection is my aim)
* assemble entirely using correct fasteners and specified torques. Use assembly lube, sleeve retainer, threadlocker, anti-seize where appropriate
* make note of all build decisions including observed dimensions, gasket thicknesses, fits/clearances, static compression, initial time, items that were modified from stock, items of concern or judgement
* test fire the motor to assure no leaks, sound build
Good thing I don't do this for a living. . . no one would want to pay for all that.
Jason
What kind of bikes do you build?
