Because I was fed up with the slow fuel filling (especially the last liters) I made a hole in the filler neck to let the air out and to speed up the filling.

Remove the screws on top and one on the inside of the cap (don't drop them )


Checked if the was room between the neck and the tank: yes there is.


Drill a hole (6 mm), don't go to far!!


Finished


Tank is full so I don't know if it works, to be continued......

Interesting. I was thinking of doing that, as the last few drops of fuel take ages to put in, but reading the owners manual, it says the air gap is necessary. Let us know how you get on, and if this allows you to squeeze another litre in!!

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-- Triumph Explorer 1200 --

The air bubble is needed for stupid people who will fill the tank completely, put the bike in the sun and have a hamburger (and then sue Yamaha). Will fill up the tank tomorrow.

It does, from empty to neck full is 23 litres (I know this from bitter experience in an Italian filling station - Gasoily (could be the wrong spelling) isn't petrol!), but it does take a long time with the hole that is there. I never considered drilling it out.

In my case, probably best leaving it well alone. Even during the summer, with it being stored underground, fuel is still very cold when it first goes into your tank but soon expands in the sun. don't want to be blowing fuel out of the breather pipes right in the track of the back tire!! IF I was to drill the hole out, I'd forget !! I'm not sure how much fuel expands by but the allowence in the tank is only 4.5% - doesn't sound like much does it?

When you do fill it and the tank fills you may well get a jet of fuel coming out of the hole (only for a second when your full), just watch your eyes! - could you confrm if this is a problem or not ??

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Never underestimate the power of stupid people in large groups.

Tried filling up today. No fuel shower, no leakage of fuel, fast filling till 2 cm to the top of the neck, then foaming starts and filling becomes slow.

I'm happy with it.

Good news - My '07 Varadero used to spit a bit out if you didn't back off before it got to the top!

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Never underestimate the power of stupid people in large groups.

If you're going to do this i'd strongly suggest using a hand drill not an electric one !! Even a battery powered one can have sparks around the motor commutator and that is not a good thing to have near a tank of petrol !

Yesterday I put in 23.95 L . I came at the fuel station without stuttering with 110 km on the F-trip.

Done it to my XTX & now can get an extra 15kms until the fuel light comes on.

I would only recommend one does this mod, by over fulling the fuel tank, if you are going to ride the bike at least 20kms before parking the bike, otherwise the extra fuel will over flow in hot conditions.

WARNING Please only use a air or hand drill, do not use a electric drill around fuel vapour.

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Mods that I have done to my XTX's

My 04 XTX
Stage 1 & 2 DNA filters / Kev fuel mod / snorkel mod / Drilled air box mod / Engine breather mod / Fork Spacer mod / 15w fork oil /
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My 07 XTX
Raptor 700 cylinder 102mm / Modified Crank Case to take a 105mm Raptor Cylinder / 11:1 102mm JE Raptor piston / Stage 1 Raptor Hot Cam / Ported head / Colder Spark Plug / +2mm Throttle body / DNA stage 1 & 2 filters / Modified Air Box / Snorkel removed / Worry Brothers stage 2 filter cover / 6mm & 8mm Bolts Replaced with Titanium Bolts / Recovered seat in Black / O2 Eliminator /

My 09 XTX
59HP at the rear wheel / Stage 2 Raptor Hot Cam / DNA stage 3 Air Box / Carbon Can Exhausts / Modified Exhaust Link Pipes / PCIII With Custom Fuel Map / Wideband Commander O2 Data logger / LCD100 Dyno Jet display & fuel adjuster / 2500 OHM HT lead instead of a 10K OHM XT lead / Extra Coolant Cooler / Protaper Fat Bars / Tail Tidy With LED Tail Light / OKE Protection Knobs / LED indicators / AIS blocked / Modified rear sprocket rubbers / Rear Foot Pegs removed / 09 ECU With 02 Sensor Changed To A 06 ECU / Complete wiring harnes Changed from 09 to 04 / Home made LED resistor flasher / Hole drilled in the fuel tank filler neck to allow quicker filling / Modified Bar End Weights / Progressive front fork springs, 15W fork oil, forks lowered 25mm, used XTR rear links lowering the rear 20mm, rear spring one click stiffer / Changed front & rear guards from blue to black / 47T rear sprocket / Speedo Healer V4.0 / Kev throttle cam mod / Throttle grip mod / The new 2010 O2 sensor mod is out, works a treat, The new 2012 O2 Controller is out, PM me for details

Now ride a 2018 MT09SP ABS + TCS

My KTM 990 SMR Mod book. http://www.ktmsmt.com/viewtopic.php?f=13&t=4946

Has anyone had problems with the plastic bits in the tank , and i was thinking of a 10mm hole , to big or not ?

Cheers Phil

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"I'm here for a good time, not a long time"