RACING ENGINE BALANCING RPM 12000
Crankshaft Knife Edge Cut / 4 cyliner
The cranks are spun at 500 RPM while balancing...little info about balancing, one OZ. of out of balance will equal to 24 pounds at 4000 RPM, that same one OZ will be just over 200 pounds at 8000 RPM.

Balancing not only gains HP and makes a smother running motor, but also saves the motor from trying to rip itself apart..

Crankshaft Knife Edge Cut / 4 cyliner modify = HK$ 4200 ~~