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All moving parts in the engine have some friction. The piston going up and down in the bore, the friction of the conrods on the crankshaft bearings, etc. All this internal friction consumes power. It can be reduced by "blueprinting" and assembling the engine with selected matching components this blueprinting will give some extra bhp.


The tighter tolerances makes the engine gain power, smoother, and more "free reving".  Also when blueprinting the components of the engine such as the crankshaft, mass is drilled out of the component at specific points to balance the crankshaft as close to the engine "blueprint".  This results in a lighter crankshaft. Add to this the weight savings from the other components.  As many know, lighter rotating mass engine components such as a flywheel results in a quicker revving engine.



 




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