The .4724" air bleed carburetor that comes with the magic muffler measure .7255". The piece I machined to adapt the OS MAX 9-b carburetor measures .7285". If you're machining this piece, a great amount of clean up work can be done at the base to improve the mass flow at this point. Both pieces use an "O" ring to ensure a positive seal.Could anyone tell me what the O.D. is on the carb that goes in the Nelson longstroke 45 O.B. I beleave its a lil larger than the short stroke engine.
Thanks
John
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