650/X-2 40mm keihan polaris compatible to 650?

[callmefinch]

i acquired a 40mm keihan and im curious if anyone has tried to do this yet. im sure it needs some machine work to do if actually bolts up

part #1253368

 

[Big Kahuna]

Depends. Does your 650 have the 28mm carb or 38mm? If 38 then it may bolt up.

 

[callmefinch]

im pretty sure it has the 28

 

[Big Kahuna]

you would need to find a manifold that would work.

 

[kevbo]

im pretty sure it has the 28

You will need a 1991-1996 manifold. The 40 will need larger jets, start with a 170 main and an 85 pilot with stock popoff. Open the top screw 2 turns and lean for best acceleration.