Carb direction.

Most like to run a/m carbs with the fuel pumps facing the exhaust hose. (the oem 38's don't). The throttle blades allow for better flow whilst opening. I usually replace the offending button head screws with flat heads (countersunk). I also install 2 tie wraps around the exhaust hose in the area that might rub. That nylon wont rub through.
 
Top Bottom