(05-06-2015, 04:49 AM)KypDurron Wrote: What's blueprinting, if I may ask?

Rebuilding the motor to exact specification to take away any slack tolerances allowed at the factory.

This should give optimal output and increased reliability.

It's quite expensive and I think it prob happens less these days as tolerances are better than ever at the factory??????

In my day you would send the motor off to be rebuilt almost as a matter of course. Tony Scott was a well known "blueprinter". I have a 1993 GSXR 750 motor rebuilt after running in by Richard Albans at TTS engineering that has never since missed a beat.
If it was a two stroke I am guessing Stan Stephens was the big name.

Other engine builders/tuners are available !!