I just set the screws the same and never checked rpm. Bing did turn more rpm. Also from what I measured, the bore and Venturi were within a thou or two
They claim the Bing has a leg up slightly against the Walbro .I have a pair of 038 Mags,German and Brazil .The German has a Walbro and the Brazilian has a Bing .I can't compare them because The Brazilian has some soup. The German is a rebuild but stock with a gutted muffler .Apples to oranges .
I have a bing on my 064. I like it. Always easy to tune and seems consistent. It flows plenty of fuel too. 1/2 turn on the needle makes a big difference.
Nice post. I have 3 064s and another to build this summer. Two have Bings and haven’t given me any issues, yet. I grabbed a few kits from Australia last year just in case.
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