Mikuni SBN jets

[2kdime]

Mikuni SBN 38mm on a GX390

Considering alcohol

Can anyone tell me the recommended jet sizes for such an application?

Are the factory jets a good start while still on gas?

I believe they are

65 and 107.5

Thanks for your time

 

[mipowdercoater]

You should move on from the sbn carbs they are for two stroke jet ski's it would take alot of time and money to make that work when you can get a round slide mikuni pretty cheap.