Wasted Fuel - Right Side of V11 Sport/LeMans Tank

[al_roethlisberger]

So, Al, can you describe your new system in an "overall" way?  I'm unclear on what all you've changed and what problems you've worked to solve.  Ideal would be a diagram, but I'm interested in whatever you can elaborate upon.

 

 

Whew, well .... it's pretty well documented, even with photos, in the Relocated Fuel Pump Thread

 

 

It was a two phase/two goal project...

 

1) To combat heat induced vapor lock by relocating and shielding portions of the fuel system, specifically the fuel pump

 

2) Increase practical range by creating access to the "wasted fuel" trapped in the right side of the V11 tank due to the EFI fuel return loop and how it was engineered

 

 

I feel like both goals have been acheived at this point. But as mentioned in the two threads(this one and the relocation thread).... this will probably prove a historical reference, as I'll be most likely be changing out to a 2003 tank with the internal fuel-pump in a few weeks.

 

 

 

But basically, the "balance tube" modification incorportated the following(assuming one has already relocated the fuel pump):

 

1) Removed stock fuel pressure regulator and integrated tank return from the right side petcock mount under the tank.

 

2) Installed another manual petcock on the right side

 

3) Installed a new fuel return up under the tank by drilling a hole and installed an AN -6 bulkhead fitting. This specific solution is only possible if you have removed your airbox BTW. If you still have your airbox, you would have to engineer a different location.

 

4) Ran new fuel supply lines/fittings from both petcocks to the fuel-pump inlet, using 2 AN -8 "tees" to creat a "balance" connection between both petcocks

 

5) Fitted a new remote fuel-pressure regulator(see photo above)

 

...that's pretty much it, in a nutshell

 

 

It seems to be working fine, and should provide easier access to the total capacity of the tank. Long term durability is still an unknown(i.e. leaks) but so far it looks good.

 

 

The photo below shows a closeup of the fuel-supply line, and the "crossover" or balance manifold under my relocated fuel pump bracket.

 

Hope that helps!