California vs 48 state gas tank Swap?

[dylanfan53]

Does anyone know if there's a difference, due to emissions stuff, between a California and 48 state Yamaha R6 tank?  I'm wondering if I can plunk a  CA tank on a 48 state bike without any venting/fuel starvation problems.  I've had problems with this in the past on other bikes.
Thanks.

[Super Dave]

Wow, that's a good question.

There might be a cannister or something FOR the CA version.  

Have you checked with a Yamaha dealer to make sure that there is a different tank necessarily?  Not the assembly, but the tank only and maybe the cap, or something.

[dylanfan53]

Right you are, Dave.  As it turns out, the tank is the same but the cap is a different part number.  I think that means different venting between models so I'll stick with a known non CA tank set up just to be safe.  I've been down this road before and spent half a summer trying to track down a fuel starvation problem that was caused by a "mix and match".
Thanks!