I have searched the site and others for the best solution for the crankcase breather hose issue on early Girlies. To me it would seem that a small breather filter mounted high on the bike would be the best solution.
Posting this to try and get a consencus so I can do the fix this weekend.
Thanks in advance for all your advice!! :D
Your solution sounds like it should work just fine. Speaking as someone who lost a 2000 model to hydrolock and a stressed rod, I'm glad you're not ignoring the issue.
(http://www.dm.net/~bahwolf/moab2005/P1010152.JPG)
(http://www.dm.net/~bahwolf/moab2005/P1010151.JPG)
Sounds viable. The trouble with the factory hose route is that it breathes into the airbox... no problem as long as the bike remains upright. But as any
long-time rider will attest, the natural disposition of any motorcycle is to become horizontal.
Once an older Tiger is on its side, the engine must be shut off immediately to avoid pumping oil into the airbox. A few ounces of engine oil in the airbox
can be ingested into the engine once the bike is upright and restarted, resulting in weeping and gnashing of teeth.
Moving the end of the vent hose out of the airbox altogether effectively solves this problem, as the vent spews engine oil out into the air. Be sure to run
a small filter on the end of the hose as Old Desert Rat says, and also block off the vent hose hole in the airbox.
Good mod there, Desert Rat. This ought to save a few engines.
Maybe you could use a one way air valve on your vent hose and then rout it to your chain sprocket to oil the chain. Make sure to plug the air box. One way air valve will prevent water to get sucked in the engine. This is at least what I have done to my Husaberg.
(http://i113.photobucket.com/albums/n223/fano1/IMG_4114.jpg)
A capital idea!
Geez, I love the internet.
Thanks for all the replies. Just got back in town from a work trip, will give it a go this weekend. Fano I like the idea/ I may not route it to oil the chain but use one and then put a filter on top.
I'll vouch for that.
This is by far the best Tiger site...
fun, pissedoffedness is tolerated, and when you have a problem... someone is there to help.
Quote from: fanoMaybe you could use a one way air valve on your vent hose
Make sure to plug the air box. One way air valve will prevent water to get sucked in the engine. This is at least what I have done to my Husaberg.
the triple engine dose not suck like a single so the valve wouldn't be needed but it would look good.
I need to do this mod. Can someone post a picture, or just describe where the breather hose is (which side, how thick is it?). The manual just shows it floating, disembodied from the engine. I'm not even clear which side it's on.
Also, does the tank have to come off to do the mod?
Tank needs to come off to do pretty much anything other than wash your Tiger, but it's no big deal once you've done it a couple of times - 15 mins max.
Once off, look under the right rear side of your airbox, all will become clear.
Thanks!
Just make sure the tank is empty (or low) when you pull it.
Mighty heavy when full!!
Have a good weekend
Loops
And staggering round a cluttered garage looking for somewhere big enough to put it down is no fun at all.....
Quote from: "iansoady"And staggering round a cluttered garage looking for somewhere big enough to put it down is no fun at all.....
We've all been there... :ImaPoser
This was to be my first fix - I'm thinking of taking out the airbox restrictor plate too, whilst I'm in there- anyone got any thoughts about this?
Once again, search is your friend; there's a whole thread on removing the plate. :wink:
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 (http://tigertriple.com/forum/index.php/topic,2581&highlight=air+filter+blanking+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.
Quote from: "kelpie_67"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?
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?
955 eliminated the need for this as a design change moved the breather.
Just pull it off as I did...
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.
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:
also i thought another solution:
to install a fuel filter between the hose and the airbox,
something like that:
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?
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......
Quote from: "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......
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?
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
Quote from: "jp7rgv"Quote from: "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......
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.
Quote from: "metalguru"Quote from: "jp7rgv"Quote from: "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......
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!!!
Most of these old condensers are probably obsolete now as used up untill about 2000. Like I said this will not cure your problem. Go and chat to someone competent in vehicle electrics and wire a fall over switch into ignition circuit as these can stop ingress of oil if they fall on the left side and of course before all this fix the blown seal.
does someone know of the top of their head the diameter of the breather hose? Somebody posted the link to McMaster exhaust filters (mufflers), I was wondering what diameter to buy without having to pull the out to unplug that hose to measure it?