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main jets ,#'s

GEEZR

By GEEZR
in Jetting & Exhaust Forum

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GEEZR HQ Noob

GEEZR

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Posted

I often wonder how those rocket scientists at yamaha come up with the little numbers marked on the sides of the main jets. I have a pair of 280's that has hole diameters of about .057 inches.

Does anyone know of some equation to this? just curious.

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