Engine Blueprinting

[Billla]

The sole purpose of blueprinting is to allow easy replacement of assemblies - i.e. in a race engine ensuring that every single piston is exactly to spec, every rod and the combination. Where a race engine burns a piston, it makes it possible to replace that single rotating assembly without introducing variances in engine performance.

For example, I recently bought a set of SCAT I-beam rods. The lengths varied from 5.699 to 5.701...would you really want to resize the big ends of these rods to make them perfect? Thinks like indexing the crank stroke, etc...it's a lot of time and a lot of money.

IMHO this is expensive and useless for anything other than a purpose-built race only engine. Build to within spec and invest in a good balance - that's all that's needed.