fuel tank

[Rick S.]

I've read the BigCee FAQ and Skip Faulkner's Fuel Tank Mod and would like to attempt the same thing with the IMS 6.6 gallon tank, because there's a lot of fuel left in the tank shrounds when the reserve fuel intake is no longer drawing any more fuel. Here's my question, by installing a fuel line to draw gasoline from the left and right shrouds, by adding a T, will the gravity feed still be able to siphon the fuel from the shrouds, as they sit quite a bit lower than the main petcock? Is the vacuum created when the engine is running in any way able to siphon the fuel into the standpipe which I will cut down a bit and add the fuel line to it? I'd like to attempt this to see if it will work and looking for your feedback. Thank you.

[Devon]

captive@... wrote:

>I've read the BigCee FAQ and Skip Faulkner's Fuel Tank Mod and would >like to attempt the same thing with the IMS 6.6 gallon tank, because >there's a lot of fuel left in the tank shrounds when the reserve >fuel intake is no longer drawing any more fuel. >

I think Skip has since removed this mod.

>Here's my question, by installing a fuel line to draw gasoline from >the left and right shrouds, by adding a T, will the gravity feed >still be able to siphon the fuel from the shrouds, as they sit quite >a bit lower than the main petcock? >

"Gravity Feed" and "Siphon" are two completely different things. AFAIK there is no siphoning going on.

>Is the vacuum created when the >engine is running in any way able to siphon the fuel into the >standpipe which I will cut down a bit and add the fuel line to it? >

No, the vacuum created by a running engine ("sucking" fuel through the jets, actually fuel is pushed through the jets by atmospheric pressure) is completely isolated from the fuel supply system. You have the fuel supply, which is a tank, fuel hose, bowl valve, and bowl. This is identical technology to a toilet bowl tank, it's just aluminum instead of porcelain. The bowl is vented to the atmosphere, and it only fills when the level falls below a certain point, completely independent of engine vacuum. Then you have the fuel circuits in the carb- engine vacuum on one side, atmospheric pressure on the other and fuel in between. So fuel flows through the carburetor in an unending attempt to equalize the uneven pressure, how much depending on how much vacuum is present at which jets.

> >I'd like to attempt this to see if it will work and looking for your >feedback. >

So far as I've heard, everyone who's tried has pretty much gone back to stock. I actually like the fuel left on the right shroud, it's like the double secret reserve. After you're switched to reserve, then run out of gas, right before you start pushing you lay the bike down on the left side and crank the motor. This fills the bowl, you can ride a few miles, then repeat. Devon

[blacksheep337]

I HAVE AN EXTRA TANK LAYING AROUND MY GARAGE. ANYBODY NEED ONE? ILL LET IT GO FOR 50 BUCKS. ITS PAINTED PRIMER BLACK AND HAS A SLIGHT DING ON THE LEFT SIDE.