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try timing the fuel flow through the carb. Take the bowl off and time how fast the fuel flows through the needle and seat.
I thought about that Carl.... sounds messy
I guess if your serious, you could have the carb sitting next to the fuel tank and do a true measurement. I wonder what flow rate is required for HRD builds.... I know this came up as a question before, but I don't remember if we ever got a final answer
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