Crankcase Breather Pipe
Posted January 21, 2002 - 05:26 PM
Excelent postings, I too blocked off all vent to airbox then to atmosphere. when racing ZX10's Simple way to put it is..
Running vent to airbox makes your bike eat it's own poop! Just like epa likes it..Yech!
Posted January 21, 2002 - 05:40 PM
IN THRUST WE TRUST!
Posted January 21, 2002 - 05:45 PM
I too have seen an obnoxious amount of crud in my Harley and Buell's airboxes. Hell, I don't even oil my K&N on the Harley because the crank case does such a good job.
Seeing all the crud that comes out of my WR's vent tube makes me think it's probably as bad. I really don't like the idea of sucking all that stuff back into the box. It makes sense that the EPA doesn't want it going on the ground either.
I'm wondering if the tube might even get clogged up with the crud if there is a dip in the tube???
Posted January 21, 2002 - 05:50 PM
Posted January 22, 2002 - 02:18 AM
If the bike stalls in water where the original breather is in the water, air will be drawn from the pipe located under the seat/ ontop of air box.
If the bike is totally immersed in water (engine stopped !!), & water gets into the pipe under the seat, when the bike is stood up, water will run to the ground via the 'T' into original breather pipe. Alot of people route the original pipe up to the bars, but if water/condensation gets into the pipe, it will end up in the head !!
I've done this mod on both my WR's & works fine
Posted January 22, 2002 - 08:23 AM
Originally posted by Ronin:
Thanks SoCal, I love the analogy. It just pains me to see the posts about putting the breather into the airbox, us Buellers take so much time, effort, and cash to properly remove that crap from our bikes it almost strikes me as blasphemy to think about putting a crankcase breather into an airbox of a bike that already has its breather vented to atmosphere.
IN THRUST WE TRUST!
But there is the point my good man....it aint a Buell, just cos your thoery applies to one particular make it doesnt ness apply to all does it?? With the greatest of respect to all you Buell /Harley riders, Other than two wheels they don't have a lot in common with the rest of the motorcycling world now do they? (more Massy Ferguson LOL)
The best way is to disagree and when I've modded MY WR I'll report on whether it's right or wrong good or bad, one thing for sure , it aint blasphemy just cos you dont like the idea now is it?
Posted January 22, 2002 - 09:43 AM
Posted January 22, 2002 - 01:26 PM
Posted January 22, 2002 - 06:04 PM
I’ve been running the ‘Clark Mason breather routing’ (up behind the number plate with a small K&N filter attached to the end) for close to a year and half now with no problems including no filth/gunk build up. I have cleaned the small gauze filter about four times since installing it. It just doesn’t get very dirty up there. See http://www.thumperta...ic&f=3&t=003246 for additional info.
I found out the hard way water ingestion can be a problem even in the middle of the Mojave Desert. I managed to pretty much submerge my bike about 40 miles outside of Barstow last November on day two of the LA-Barstow to Vegas ride. The course took us through two ~50 foot long ~3 foot deep water crossings. I cruised through the first one without any problem, but on the second one, I ended up rolling into what was probably the only hole in the river bed resulting in the water rising to just below the gas cap. I pretty much floated off the seat! I let off the gas as soon as the front fender started to submerge and the bike instantly stalled. Before I did anything with the kick start lever, I pushed the bike to dry ground, pulled the seat and tank, drained the air box and carb float bowl, wrung the water out the air filter and pulled the sparkplug. I was able to see no appreciable moisture in clear 1/2 inch PVC braided hose I’m using for the crankcase breather, so I didn’t mess with it. I then kicked it over a bunch with the plug out (tank still removed) until there was no real signs of moisture being blown out of the sparkplug hole. I then checked the plug for spark before putting everything back together, which was a good thing since it turned out I had no fire. After reseating most of the connectors in the wiring harness, I finally got a spark. Put it all back together and it started in 4-5 kicks. It took me a little less than an hour and half to get it going (I would have houred out had this been an enduro!). I rode the remaining ~200 miles to Vegas without any bike problems (I won’t discuss the self inflicted rider induced problems here). One lesson learned from this is, I have gone back and applied a healthy dose of dielectric grease to all my electrical connections for improved waterproofing.
Getting back to the breather routing that terminates behind the number plate – I have never noticed any significant condensation that could potentially accumulate and run back down into the valve cover. As you would expect, I am able to see a small amount of oil residue the collects in the hose. My guess is the condensation issue is probably a bigger concern in higher humidity climates. I’ll try to pay closer attention to it the next time we get a reasonable amount of moisture in the air out here.
I really like SoCal426’s analogy and especially the “just like the epa likes it” comment – that’s great!
Posted January 22, 2002 - 06:47 PM
You didn't need a breather, you needed a snorkel
Well...As you know, You can lead a horse to water.......
Guy in U.K,
Your a different matter here. To tell a guy his experiances both past and present are not worth considering because it's not with what YOUR ride might be at the moment. You didn't step on his toes. You God^*%# insulted the man while hideing behind the (just an opinion) excuse!! Ronnin put in great detail, time and thought in his postings. I've never meet the man and he proved himself a class act to me by his response to your ravings.. Well he let you off light!. Your response in return just showed to us all that YOU have NO Class..Oh yea!..Just an opinion.
Posted January 22, 2002 - 09:23 PM
I had come to expect an exchange of valid points, NOT a "WELL your wrong cos I say so" and "You've no class because you disagree" from this board
to say I'm a little disapointed is an understatement, name calling does no-one anygood at all I would suggest that You, SoCal re-read all my posts on this subject, and try to see exactly what I am trying to say.
IF all I get is another "NO class" or "Whatever!"
I rest my case!
[ January 24, 2002: Message edited by: Guy ]
Posted January 22, 2002 - 10:07 PM
1) Insulted Ronin,
2) Told him his points were invalid and worthless
3) hiding behind an excuse?!?!?!?
4) Just exactly where was I "Raving"?
IF you read it properly, many times I state," Yes I understand where you are coming from"
AS I said OPINIONS, not direction from on high,
My feelings are that it is NOT myself showing the "Lack of Class"
Dont Diss me, just because I dont follow the flock!
If we take this to the Nth degree, ANY bike which has such a serious oil mist/airbox fouling problem, that most owners don't even oil the filter, Should we really consider it to be....
"The One which ALL others follow"
I dont think so.....so dont diss me for having the balls to say, "yeah fine, but I'm doing it my way."
[ January 23, 2002: Message edited by: Guy ]
Posted January 23, 2002 - 09:52 PM
[ January 24, 2002: Message edited by: Guy ]
Posted January 24, 2002 - 03:59 AM
P.S. Maybe you should back-off a bit here.
Posted January 24, 2002 - 09:49 AM
Of all the solutions presented a single tightly sealing PVC-type valve to atmosphere (or the airbox) is the only one that will keep water out of the crankcase when you drop your bike in water.
Not really a subject worth arguing about guys.
Posted January 24, 2002 - 09:57 AM
Posted January 24, 2002 - 10:14 PM
If so what one are you running?
Perhaps I would pull the bung out of the valve cover and pipe tap a home for it.
Sorry for butting in, y'all may continue now...
Posted January 24, 2002 - 11:40 AM