[milfazer]

Hi all,

I don't come often on this forum, but after 11 years with an FZS 1000 (hence my "milfazer", LOL !), I recently got an MT-09 (as it is badged in here).

The funny thing is that about 10 years ago, I had punched a hole in my FZS fuel tank neck, exasperatd as I was at filling the last litre in.
This has once allowed filling 22+ litres in the tank (on the center stand) though it is not supposed to get more than 21 litres. And the bike went to the fuel pump by its own, no sputter or else !

So guess what ? My 09 soon got the same mod ! So, 15 litres (4 gallons now ?)

Cheers,
Noël in France

 

[Skyrebel88]

Did it. Fuel tank mod complete. put the bike on the kick stand. used a sharp drill starter tap/ sharp 1/4 rod 6 inches long and a hammer. I did this while my bike was on E. Made sure to keep the metal touching the metal the entire time. the rod was long enough when i was hitting it, it was no where near the whole for gas. made the whole on the non kit stand side (the high side). First time i have ever done this "mod" on a bike. only the next tank full of gas will tell how many more miles i get per tank! o btw it took 5 seconds.

 

[Spacecoast]

my average gauge is saying im getting 52mpg so far ive got 305 miles on it

I only have around 200 miles on my bike, but the average mpg indicator is showing 51.7 Avg. Using the "instant mpg" reading it will show sustained 60+ readings if I go easy in top gear. I'm not popping wheelies but I am being aggressive and vary my speed, throttle and rpm...I sure hope the excellent mpg reading is true and stays that way.

 

[Skyrebel88]

So far i do not like this mod. when i filled up, the gas shot out of the whole making a big mess and gas went out the over flow tube. Im thinking more wholes will mean less pressure that one. To be continued.

 

[motomania]

So far i do not like this mod. when i filled up, the gas shot out of the whole making a big mess and gas went out the over flow tube. Im thinking more wholes will mean less pressure that one. To be continued.

Not sure how you managed that but here in California, we have vapor recovery bellows on all the gas pump nozzles. The bellows include a switch that detects that the bellows are compressed against the gas fill port on a car. In the motorcycle community, these bellows are often referred to as "foreskin" as they need to be manually held back or you can only fill the fuel tank on the motorcycle about half or 2/3 full.

Given the above, the filling process in California goes like this:

Push the nozzle into the tank until the foreskin compressed switch is activated, fill the tank until the vapor recovery system starts getting liquid fuel instead of vapor, then withdrawn the nozzle, manually retract the foreskin, aim the gas is nozzle into the large central hole in the filler tube and fill the rest of the tank. As the fuel level comes above the bottom of the fuel filler neck, then slow the fuel flow until the rate of fuel flow into the tank is roughly equal to the rate of air flow out of the holes punched into the sides of the filler neck.

It is a PITA but it beats living with cold and snow for 6-9 months out of the year.

 

[1duckyboy]

No problems with the punched hole here. It's a small hole so you have to dribble the last of the gas in so the air can escape through the punched hole. More or larger holes would help.,

 

[Ohnineophile]

It occurred to me.
The soft sheet metal, punches like nothing, with the correct punch..........very pointy and sharp.
One good rap, is all it took for each hole.

I used a sharp metal punch and it worked perfectly. I made three holes on either side to allow maximum air flow when filling. My tank capacity was increased 0.3 gallons, which given my 50 mpg average on long rides, equates to about 15 extra miles of range. Not huge, but not nothing.