Everyone who has ever messed with a carburetor has herd of a power valve. I am willing to bet that 90% of you do not know what a power valve does or how it works. After you watch this video, you will learn exactly how it works and how to square your jets with a Power valve.
To square your jets you do need to know some simple math so pull up a chair and become a Holley power valve pro!
#Holley #carburetor #4150
A= π R²
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