carburetor 13/32 deep well socket

[Y-Blockhead]

Originally Posted by haag1332

... But it's kinda like when your car shakes at only 35, and 60 or whatever. Things have been balanced, but unfortunately there will always be some sort of distortion or imbalance presented at some components natural harmonic. Usually these vibrations will be directly attributed to the diameter of a specific component..... .

Reminds me back when I worked at Chevron Refinery. When starting a centrifugal pump it was important to get it up to full speed so to pass through "Critical Speed" (the RPM that the natural harmonics occurred) quickly.