I have a 96 m900, how do you tell what the size of the carbs are? I know they are either 38mm or 40mm. From what I've read. But how do u tell.
38 mm for oem.
I read online they could be bigger though, or is that just for aftermarket?
Quote from: mxgrant185 on March 29, 2013, 08:24:38 PM
I read online they could be bigger though, or is that just for aftermarket?
Yes.
Typical carb venturi for a 900 w/ FCR's is 41mm
So how exactly can I tell or measure the carbs to find out? And do other displacements use the same size?
You could measure the venturi with an inside mic or a bore gauge, but, as you have been told it is a 38. All Monsters use a 38, different jetting for different applications is the difference. The size is also indicated in the model#, BDST38 - ****, the last four digits being the application.
Mine is reading DUC B132 K5Y1? I bought this bike used and have no idea what has been done to it previously
Those are the stock carbs