Do you disconnected your breather hose to air box?

Woe unto you that bought the first model year of a major remake, perhaps this section can help address any 2014 and later model Ural "imperfections". Here's a special section for folks with the latest rigs to discuss 2014 and later model-related topics such fuel injection, 3-wheel disc brakes, hydraulic steering dampers, spin-on oil filters and other anomalies that don't belong on true Russsian motorcycle ;-P We've gone from using big hammers and greasy wrenches to needing computers and Ouija boards in order to fix our rigs.
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Please keep this section specific to issues pertaining to 2014 and later models such as fuel injection, sidecar and rear disc brakes and so forth. Ask general or non-2014 and later specific questions in the main Hammerin' & Wrenchin' section.
gobium
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Do you disconnected your breather hose to air box?

Post by gobium » Tue Nov 14, 2017 9:43 am

If so why? Or why not

My friend texted my this morning
"Keep stirring the pot......lol"

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Albuquralque
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Re: Do you disconnected your breather hose to air box?

Post by Albuquralque » Tue Nov 14, 2017 9:56 am

Why would anyone do that?............. :loco:
"Put a little gravel in your travel"


Previous Urals Owned: 2004 Wolf, 2006 Tourist, 2006 Patrol (TOW), 2006 Patrol (TOM), 2014 Patrol

gobium
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Re: Do you disconnected your breather hose to air box?

Post by gobium » Tue Nov 14, 2017 10:00 am

Albuquralque wrote:Why would anyone do that?............. :loco:
EPA?

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Tomcatfixer
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Re: Do you disconnected your breather hose to air box?

Post by Tomcatfixer » Tue Nov 14, 2017 10:12 am

I did it. The breather sputum was making an oily mess of my paper air filters.
2017-11-14 08.58.28.jpg
Rerouted the breather under the alternator, down the right side of the engine, to exit underneath, by the center stand. Plugged the hole in the airbox and now my filters stay super clean. 8)
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- Chad

Gordonsville, Virginia, USA

Current rides:
2015 Ural cT "Mobile Chernobyl", 2001 Ural Patrol "Little Red Bear", 1999 Ural Tourist "The RPOC", 1994 Honda VFR750F

Previous rides:
2007 Honda VTR1000 FireStorm (Super Hawk in U.S.)
2001 Buell Blast! - - - - - - - 2005 Yamaha FJR1300
1993 Honda CBR600F2 - -1984 Yamaha FJ1100
Two different 1986 Yamaha FZX700S Fazers

gobium
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Re: Do you disconnected your breather hose to air box?

Post by gobium » Tue Nov 14, 2017 10:17 am

Tomcatfixer wrote:I did it. The breather sputum was making an oily mess of my paper air filters.
2017-11-14 08.58.28.jpg
Rerouted the breather under the alternator, down the right side of the engine, to exit underneath, by the center stand. Plugged the hole in the airbox and now my filters stay super clean. 8)
Lol chad Chad
You look inside your air box lately? :D

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Albuquralque
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Re: Do you disconnected your breather hose to air box?

Post by Albuquralque » Tue Nov 14, 2017 10:21 am

My filter has never been affected by the breather.
"Put a little gravel in your travel"


Previous Urals Owned: 2004 Wolf, 2006 Tourist, 2006 Patrol (TOW), 2006 Patrol (TOM), 2014 Patrol

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Tomcatfixer
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Re: Do you disconnected your breather hose to air box?

Post by Tomcatfixer » Tue Nov 14, 2017 10:23 am

You look inside your air box lately?
Okay, once I cleaned THIS up, the filter has been clean. :wink:
2017-11-14 09.21.43.jpg
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- Chad

Gordonsville, Virginia, USA

Current rides:
2015 Ural cT "Mobile Chernobyl", 2001 Ural Patrol "Little Red Bear", 1999 Ural Tourist "The RPOC", 1994 Honda VFR750F

Previous rides:
2007 Honda VTR1000 FireStorm (Super Hawk in U.S.)
2001 Buell Blast! - - - - - - - 2005 Yamaha FJR1300
1993 Honda CBR600F2 - -1984 Yamaha FJ1100
Two different 1986 Yamaha FZX700S Fazers

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Tomcatfixer
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Re: Do you disconnected your breather hose to air box?

Post by Tomcatfixer » Tue Nov 14, 2017 10:26 am

My filter has never been affected by the breather.
I wish I had taken a picture of my nasty, oily pre-mod air filter. It made the inside of the branch tubes and throttle bodies oily and "carbon-y", too.
- Chad

Gordonsville, Virginia, USA

Current rides:
2015 Ural cT "Mobile Chernobyl", 2001 Ural Patrol "Little Red Bear", 1999 Ural Tourist "The RPOC", 1994 Honda VFR750F

Previous rides:
2007 Honda VTR1000 FireStorm (Super Hawk in U.S.)
2001 Buell Blast! - - - - - - - 2005 Yamaha FJR1300
1993 Honda CBR600F2 - -1984 Yamaha FJ1100
Two different 1986 Yamaha FZX700S Fazers

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Re: Do you disconnected your breather hose to air box?

Post by Peter Pan » Tue Nov 14, 2017 10:28 am

Well Darrel, our passed by Jim Pettiti from Racewayservices used to be a bad enemy of that breather hose. specially in cold weather. If you looked into his (and other's) shop in Salem Oregon there were about a dozen engines with bad left cylinders+pistons laying around. Jim blamed that on oil clogging mainly the left carburator. As side argument for his "vapor can" he said that why to blow mainly water vapour back into an engine that anyhow has very little power to pull its heavy sidecar. You must keep in mind he was a whole life race person who used to tickle every quench of horse power out of all engines (starting with Honda Supercub engines for gocarts.)
I put the blame on mainly bad left cylinders more to the lack of oil pump's volume flow and that the crank splashes more to the right then the left due to engine rotation direction. + lack of revs + vacuum hose of gasoline valve lets the left carb not open enough compared to the right one, so it receives less gasoline and becomes hotter due to lean mixture. (in my bike with manual gasoline valve both cylinders are nearly always within few degree at the same temperature)

I have mounted one of those vapour cans and when it is cold definitely it collects a lot of "Capuchino" (in Sophie's case nearly never oil, but water and degraded gasoline(oil?) byproducts = appearantly that passed by the piston walls into the crank case)

Environmentally obviously it is better to burn those gases as it is done in all modern bikes. (I use that collected capuchino for cleaning the muffler and oil because it is a solvent). The breather hose clogs badly my right air filter in the W800. So there I did exactly what Van Lee "Gobium" proposes, I split the breather hose far away from the filter foam pads and let breathe both FI butterflies the same amount of breather gasses.

In the Ural I still keep the vapour can until technical revision will blame that aspect.
The other Ural that runs here I put a small spounge in between the air breather and the small sheet metal inside the box...Ely says that it is always very oily, but at least it catches the oil and prevents the airfilter from clogging. It seems like it is different from bike to bike. Some throw a lot of oil out of the breather some like mine not.

Gobium, you look more often into the engines. Might it be that the rotating breather shutter might have a special position where more or less oil / gas pressure comes out of the block. If so, then it should be checked what is the right position.

So far my observations.
Sven
Last edited by Peter Pan on Tue Nov 14, 2017 10:41 am, edited 4 times in total.
Sophie Travelair = Patrol 2013
8 weeks 12.000km Oregon-Alaska-Oregon
With a DIY foam air filter the rig runs well even in tropical rain = :moto:
Final drives: 1. at 5000km, 2. at 34.000km(+friction plates) 3. at 42.386km
transmission: 1. 40.000km. 2. installed
Engine: 1. 43.388km crank replacement: Back on the road since 23.Okt.2019 :party:

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=> Attitude makes the difference!

gobium
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Re: Do you disconnected your breather hose to air box?

Post by gobium » Tue Nov 14, 2017 10:30 am

Breather air and oil dont make direct contact with filter.
They are t to both side down on to branch pipes.
According to ural engineer (not me) i talked , breather discharge act at lubricant.
Last edited by gobium on Tue Nov 14, 2017 10:33 am, edited 1 time in total.

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Re: Do you disconnected your breather hose to air box?

Post by gobium » Tue Nov 14, 2017 10:33 am

20171114_093242.png
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Re: Do you disconnected your breather hose to air box?

Post by gobium » Tue Nov 14, 2017 10:35 am

Your ural your choice
You are smartter than Ural engineers that build ural for a living..

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Re: Do you disconnected your breather hose to air box?

Post by gobium » Tue Nov 14, 2017 10:37 am

Go look at Dnepr air box

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Re: Do you disconnected your breather hose to air box?

Post by Mikey » Tue Nov 14, 2017 10:39 am

If the breather is misting oil on your filter, use k&n and benifits from the auto oiling ;)
Posted via tablet or phone so please ignore any odd words (autocorrect).
2017 Gear-up Forest fog

gobium
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Re: Do you disconnected your breather hose to air box?

Post by gobium » Tue Nov 14, 2017 10:41 am

Mikey wrote:If the breather is misting oil on your filter, use k&n and benifits from the auto oiling ;)
Yes but not on efi or dnerp airbox

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