Cutting out water crossing
Posted June 12, 2002 - 02:16 PM
Posted June 12, 2002 - 04:04 PM
Once, I stalled the bike on a tree log in water that was high enough to submerge the breather hose. I noticed a gurgling sound as I was kicking to start it. I kicked it a lot before I got it running. At the end of the day, I drained the oil and it was white and milky in color. I assumed it was the breather hose sucking in water.
Posted June 12, 2002 - 05:33 PM
If you put a "T" fitting off the carb and run a line up and into the airbox from each side of the carb this will help alot. You can get the "T" and hose at a auto store. Or PC racing and Pro Circit make a vent tube "t" kit with a filter that mounts in the airbox that the vent lines feed into.
When the vent tubes go under water it creates a vacume or something and the carb cant breath. Heck Im not really sure what happens but stalling is the result.
Posted June 12, 2002 - 11:40 PM
Posted June 13, 2002 - 01:30 AM
Posted June 13, 2002 - 03:36 AM
DEAN400....Do NOT under any circumstances attempt to start your bike with the breather hose submerged. The pipe maintains positive crankcase ventilation, when running it has a constant exhaust pressure, however when you kick the bike it initially sucks air in and if it is submerged it turns into a drinking straw filling your engine with water.
This T fitting issue has been debated since this board came online. No one has every difinitively proved it was better than the way it has been routed from the factory. Some like it some don't , but the majority of us have just left it alone.
Good bike maintenance will for the most part will help you avoid many of these problems. Keep an eye on you fasteners ,electrical components and Oil changes and Ol'Blue will never leave you stranded.
Posted June 13, 2002 - 03:44 AM
Posted June 13, 2002 - 04:26 AM
The other issue of a electical problem may be something else, but if the bike runs proper after being removed from the water try this. Its free and is a proven trick with off road racers around the country.
Posted June 13, 2002 - 08:27 AM
Posted June 13, 2002 - 06:34 PM
Mike Kaveney 99 WR
Posted June 14, 2002 - 02:59 AM
Posted June 14, 2002 - 03:07 AM
Originally posted by YAMAKAZE:
No one has every difinitively proved it was better than the way it has been routed from the factory. Some like it some don't , but the majority of us have just left it alone.
Not sure what kind of proof you want/need, but my 01 426 wouldn't cross any water over about 12" deep. I "T" fitted two of the tubes and it's now a submarine. I crossed *many* streams during last years Colorado 500 and the bike never faultered.
Endurodog also mentioned the fix above. We were told this by Team Green mechanics on the same ride.
Do what you want but there is no downside with t-venting the breather hoses..
Posted June 14, 2002 - 05:43 AM
Just my $0.02...
Of course, there's no water here in CO whatsoever to cross...so I cannot prove my theory personally. Someone want to try this?
Posted June 17, 2002 - 02:52 AM
Posted June 17, 2002 - 04:04 AM
Originally posted by The Missile:
Merfman, according to TT lore the breather is exactly what it is called....a breather, in......out.....in......out..... So when the engine is running it vents slightly. However when the engine is stopped and you try to restart, the breather 'sucks'. So if the hose end is under water when you kick, you'll get a belly full of water, mid, grit etc.
???? where did I say anything to the contrary? I'm just saying that IF you vent the hoses and one end becomes clogged (blocked by water) that the other end (the one in the airbox) will allows the carb to breathe. Is all.
I'll try to get some pix soon of my mod.
Posted June 17, 2002 - 04:22 AM
Originally posted by blue beast wins:
the engine breather tube wont suck, its a breather that releaves crank case pressure!!!
Oh yes it will. It has been proven many many times by myself and others. The hose will definitely suck up water if you try to kickstart with it submerged.
Reroute two of the carb vents, and reroute the breather and you will be set for water crossings. Don't forget to grease your swingarm - the water will wreak havoc on the bearings in there.