Early Girly breather hose fix

[Bixxer Bob]

Once again, search is your friend; there's a whole thread on removing the plate.

[Mustang]

the threads for the air box mods were not that easy to find .....took me awhile but here they are

http://tigertriple.com/forum/viewtopic. ... king+plate

also there is this from the Triumph Tiger Owners Group on Yahoo

Triumph Tiger 955i Airbox Modification (photos below)
Two almost identical Tigers were run side by side. Both have the
Triumph off-road exhaust and map. One has the K&N airfilter and 4000
extra miles. The one with the K&N and extra miles was just a bit
slower in roll-on tests. With this in mind, the slower Tiger was
sent to have the airbox modified. The mod was accomplished by first
removing the airbox, then removing the snorkel, then splitting the
airbox and removing the baffle. (The airbox splits in half by
removing the screws that secure the two halves.)
After the mods were complete, the two Tigers ran again in every
conceivable mode, and with each try, the Tiger with the airbox mod
was noted to have a big improvement.

Trying to understand why Triumph severely chokes the Tiger in stock
form (photo 1 &2), it could be seen as an attempt to create a higher
suction of air through the airbox thus increasing low-end torque, but
the the Tiger with the airbox mod was stronger in low-end torque than
the Tiger without the mod. My belief is the increased volume of
immediately available air (a large-chamber plenum was created by
removing the baffle - photo 3), makes for greater initial throttle
response. [As a side note, even with the snorkel removed, the air
entrance (photo 4) is notably small. Attempting to modify the
opening to a larger diameter should accompany the use of an exhaust
gas analyzer to assure an over-lean condition doesn't develop.
The 'closed-loop' of the 955i EFI may be "smart" enough to account
for greater air intake of a larger opening, but exhaust analysis
would be needed to verify this. ]

The airbox mod seems to be a complete success (the induction sound is
better as well), and the airbox mod is completely reversible if
desired.

[Wiggus]

I'm thinking of taking out the airbox restrictor plate too, whilst I'm in there- anyone got any thoughts about this?

Here's a link to the TriumphRat thread:
http://www.triumphrat.net/tiger-mods-and-bolt-ons/124889-airbox-mod.html

And a related on here at TT on a Pre-Filter mod:
http://tigertriple.com/forum/index.php/topic,5814&watch=topic&start=0&sid=c360399d4af24840aece338e18ece8ce

Another question about the breather hose: Bike Bandit does not list the hose's diameters; what size one-way valve did you cap it with?

[the slow heart]

Hi guys,

I have 885cc one - so thanks for the useful mod here,
but please advise, do this mod should be done to the bigger 955cc,
or there the potential hazard is eliminated by design change?

[John Stenhouse]

955 eliminated the need for this as a design change moved the breather.

[Hassan]

Just pull it off as I did...

[the slow heart]

Thanks, man.

I still haven't done the breather hose mod,
but maybe my choice will be routing of the hose right and up,
finished with a small mesh-type filter ( not to restrict gases so much )
pointing downwards.

I was keen to combine filter and one way valve,
but few of mine expirienced in engineering frends have warned me -
even most balanced multi-cilinder engines have pulsations of sump pressure
aside from lost compression between piston rings, and placing a valve on the breather would create pumping effect. This effect would consume energy from the rotating engine which is a small minus, but the worse case is that suction of gasoline fumes in the sump is possible which would dilute the oil in long term compromising the lubrication. Don't know how much truth is in their statement, but that cancels the valve option for me.

I thought also to place an electric valve on the breather, without removing it from the air box. An engine stop sensor when bike falls ( lots  of sports bikes have  it ) would command the valve to close the breather not allowing oil in the air box. Of cource an relief valve is also needed in case of failure in the electric one and blocking the breather.
Also an option, but rather complicated. Don't know if it would work.

In this way of thinking, could someone say how the problem is solved in the 955i engine? Do they modify the air box there, so the oil reached the box goes right out to the drainage exit instead of flowing into the cyl.1 collector? Or the solution is totally different?

Regards,
K.

[jp7rgv]

Hi,
i ve got a 05 tiger 955i and i am going to replace the breather hose seal ( o-ring) because its pumping oil into the airbox.
i also think to do a trick in order to fix the problem.
i think to install a filter inside the airbox to block the oil
something like that:

[jp7rgv]

also i thought another solution:
to install a fuel filter between the hose and the airbox,
something like that:

[jp7rgv]

so what do you think guys?

 will it work, has anyone tried something to resolve the problem?

i also read that 2006 model had different breather hose design to fix the

problem, can we update to that? any pics from 2006 tiger 955i model system?

[iansoady]

If it's pumping oil either it's overfilled or the rings are shot. I'm afraid both your solutions look rather unlikely to do anything useful......

[jp7rgv]

If it's pumping oil either it's overfilled or the rings are shot. I'm afraid both your solutions look rather unlikely to do anything useful......

the seal is f.....d ! it spreads oil and i allready ordered another,
but i was thinking a solution to combine with the new seal in order
to fix the problem once and for all.
i can't find the updated breathe hose design that triumph made to 2006 model.
can be done to 2005 model?

[amschnellsten]

Sorry guys but I think this only refers to the 99-00 tigers and a couple of the early 01s. Really any Girly with the 885

[metalguru]

If it's pumping oil either it's overfilled or the rings are shot. I'm afraid both your solutions look rather unlikely to do anything useful......

the seal is f.....d ! it spreads oil and i allready ordered another,
but i was thinking a solution to combine with the new seal in order
to fix the problem once and for all.
i can't find the updated breathe hose design that triumph made to 2006 model.
can be done to 2005 model?

Think you answered your own question there, if the breather system is working correctly and the engine is good then there is no real reason to alter the breather system. The only mod worth thinking about is the fall over switch that cuts the engine if when they go for a nap, particularly on the left side, covered really well in other threads. A fuel filter in the line will eventually block as it is ment for lower viscosity fluids, however a steel mesh separator mounted vertically will condense the oil vapour and alow it to return to the sump, this was used many years ago on engine breather systems when tolerances were not so refined as they are nowadays. with modern engineering processes the build tolerances are far tighter and a lot more accurate, so blow-by gasses are not so much of a problem. The easiest way to think of this is, car engines when they got to 100K miles if they lasted that long were considered worn out, usually denoted by the fog of smoke coming from the exhaust! Nowadays this milage is considered normal and the engine is still perfectly good. Finally lubricants have got much better.
Hope this helps.

[jp7rgv]

If it's pumping oil either it's overfilled or the rings are shot. I'm afraid both your solutions look rather unlikely to do anything useful......

the seal is f.....d ! it spreads oil and i allready ordered another,
but i was thinking a solution to combine with the new seal in order
to fix the problem once and for all.
i can't find the updated breathe hose design that triumph made to 2006 model.
can be done to 2005 model?

 A fuel filter in the line will eventually block as it is ment for lower viscosity fluids, however a steel mesh separator mounted vertically will condense the oil vapour and alow it to return to the sump

Can you please be more specific about this?
its a really interesting idea if i understand, but have you seen this patent
and what parts do i need? if you have any example pics i would be very happy to see!

Thank you!!!