CA Gas Tank Question?

[OB_BUSRYDR]

The gas tank for the California Busa holds 1/2 gal. less than all other models. Can anyone tell me what the differences in the make up of the tank is? Internal construction?

Inquiring mind wants to know.

 

[OB_jeepn]

Seems to me that the neck just extends down a bit deeper. I just take my time at the pump and slowly add fuel. I seem to be able to add 1/4 gal after initial topping. Some pumps are better than others at allowing this, some blast the fuel out and these will make a mess. Local shell can dribble it in. Extra 2 min spent adding fuel this way could mean the diff between riding or pushing.

 

[Guest]

Could also be s slightly different contour to the bottom of the tank to clear the PAIR valves and the evaporative emission system.

 

[OB_Hayawoody]

I don't know for sure, but I'd go along with Mike Morrison theory, I think it has something to do with CA emmisions, as to why the tanks smaller!

 

[OB_Jim Niesel]

I have been told that the difference is in the filler neck. My CA bike has a little shelf about 1" down inside the tank, and then the tank itself, it almost looks like a liner inside the tank, of steel. This is where the vent hose collects the fumes from the gas tank to send to the charcoal cannister. Apparently it is equal to 1/2 a gallon.