Fuel Tanks 101?

[5twins]

The smaller nipple is for a vacuum line. You have a vacuum powered petcock and it won't flow unless you supply it with that vacuum. There should be vacuum nipples on your intake manifolds to run a line from. Use one, cap the other. Here's mine. The small orange line is the vacuum line from manifold to petcock .....

 

[yamimoto]

Will fuel flow if it is in the "Prime" position?
Yamimoto

 

[5twins]

Well, yes it will, but the "Prime" position draws off the reserve feed pipe. When you run out of gas, you will really be completely out with no back-up. That's no way to set one of these up.

 

[oldbiker]

Hello Forum,

Can someone offer some insight about putting a custom tank on a 650?

I would imagine that I have to use a 650 petcock. Or do I?

Do I need to run two petcocks, or is one with a T in the fuel line sufficient?

And then what's the most efficient way to do it? Close up the existing holes from the custom tank and drill out a new spot for the 650 petcock?

Thanks in advance for the help.

...................... hi there was a guy in florida............... thaat had an alloy tank that looked smick,,,, he did want 600bucks,,,, singh saddlers(333) it could be worth seeing what he,s got regards oldbiker

 

[yamimoto]

Good to know.
Thanks 5twins,
Yamimoto