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  #33 (permalink)  
Old 12-11-2009, 07:38 AM
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Weber carbs are designed for maximum efficiency at 235 ft./sec. port velocity (28" depression). That equates to around 470 ft./sec. in a live running engine or .417 Mach. Webers aren't designed to meter fuel at port velocities much faster than that.

found this interesting data.
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