electric start "silver bullet train" engine

[MacArthur-401]

Got a picture, or at least a name of your carb?

But it is the factory carb for the by 80 silver electric start

 

[Chainlube]

Does anyone know what size the carb is. The carburetor doesn't fit on my bike, so I need to buy and adapter, Idk the size, the guide book doesn't say and the website took off the specs..

Stock carb is 19mm.

 

[MacArthur-401]

Stock carb is 19mm.

Yes but the manifold is 30

 

[Chainlube]

Yes but the manifold is 30

You asked what size was the carb. You will probably have to make an adapter or get another manifold.

 

[MacArthur-401]

Right, I needed an adapter. 30mm is the measurement from bolt to bolt