Why does everyone refer to 2 jet sizes when talking about the Raptor. Like this taken from a previous post

155/150 mains w/ 27.5 pilot did the trick

Did he put a 155 in one carb and a 150 in the other?? Also I plan on getting an E Series slip on what jetting should be about right??? I'm at sea level.

Mac

 

ChrisMac, Each carb has a main jet in it and one side uses a bigger main. You may not even have to rejet with e-series slip on call WB and see what they reccomend. Plus most impt when you get pipe on check plug to make sure your not running lean no matter what someone tells you, if you check spark plug it will tell you the truth.

 

the right carb feeds 2 intake valves and the left carb feeds only one. The increased airflow thru the right carb requires a larger main to flow more fuel.