CFelton, whatch out for perculation as well, if teh carb gets hot enough, it will boil the gas out of the float bowl, Make sure you use the thick oem type gasket for the carb base when you install it. Mercruiser offered a water cooled fuel line to ease perculation and vapor lock problems on mercarbs. If you can find one, a 2bbl Rochestor off of an old 888 Mercruiser will fix all your carb problems, it takes a little fabrication, but its worth the effort, easier to start, no flooding, idles better, no heat soak problems
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