Buell Forum / Buell XB Forum / Do-It-Yourself Buell Mods / How-To: Crank Case Breather Mod (with pics)
| Posted: 02 Dec 2009 20:07 | [?] |
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| I don't know much, but I would be reluctant to face the filter into the wind. I don't think you want positive pressure on the downstream side of the breather system. Hopefully more tech-savvy folks will comment. | |
| Posted: 04 Dec 2009 14:18 | [?] |
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| any other thoughts on that guys. i just thought it wouldnt be an issue since a few other guys have done the same. | |
| Posted: 07 Dec 2009 00:45 Last Edited By: BuddhaBuell | [?] |
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....did my breather re-route on BamBam today and just got back from a 100 mile ride, it's only 3 degrees celsius on Vancouver Island today but the sun was shining and I collected a some 'stuff' in my catchcan......
oh and BamBam sure did like the mod!!! 
and after a spirited 100 mile run this afternoon in +3 degree celsius 
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| Posted: 07 Dec 2009 01:04 | [?] |
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| That last photo... the catch tube looks like a used... er, oh, never mind. | |
| Posted: 07 Dec 2009 01:27 | [?] |
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Quote:
That last photo... the catch tube looks like a used... er, oh, never mind. I wasn't going to say it, but I was thinking the same thing lol |
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| Posted: 07 Dec 2009 01:57 | [?] |
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LMAO..
its a pop bottle blank guys.... still LMFAO! bra bra ba babra ba bra bab
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| Posted: 07 Dec 2009 04:57 | [?] |
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| lol @ the catchcan! | |
| Posted: 07 Dec 2009 06:57 | [?] |
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I do believe you should combine this with nilla's GP shift lever... the two go together well...
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| Posted: 07 Dec 2009 07:04 | [?] |
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| Maybe tape off a small "sight-line" portion of the...hehehe...catchcan thingy, and paint the rest black. | |
| Posted: 07 Dec 2009 22:13 | [?] |
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LOL
you guys are the best! heres a mod of the mod...
it's 0 degrees celsius out and I am going for a ride!
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| Posted: 10 Dec 2009 14:08 | [?] |
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| Im gunna ask a stupid question, but, what gains are there to be made by having a breather? | |
| Posted: 10 Dec 2009 19:14 | [?] |
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buddhabuell better..
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| Posted: 12 Dec 2009 22:18 Last Edited By: Stevenc150 | [?] |
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What do I do with this?! 
Edit: Fixed pic. |
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| Posted: 12 Dec 2009 22:29 | [?] |
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wtf?
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| Posted: 13 Dec 2009 04:44 | [?] |
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| @ Ghost - That's the California Emmissions canister, most just pull it off. But the Cal. guys on here will be able to tell you more. | |
| Posted: 13 Dec 2009 07:25 | [?] |
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| I get that, but it has two hoses running to it, I just need to know what to do with those hoses. | |
| Posted: 14 Dec 2009 00:48 | [?] |
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Did it - looks great, works great - Thanks fella's - Chk Eng light still on..
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| Posted: 14 Dec 2009 13:40 | [?] |
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| Anyone care to explain the real benefit of this mod? Or is it purely to stop oil entering intake? | |
| Posted: 14 Dec 2009 17:07 | [?] |
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Quote: I consider that and only clean air being burned a great Benefit - especially for such a simple mod.
Or is it purely to stop oil entering intake? |
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| Posted: 17 Dec 2009 17:55 Last Edited By: Johny Kidd | [?] |
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I welded this one today.. It will be mounted to oil cooler bracket.
Its -20 celcius here in finland and the whole winter time to "decorate" my buell for next season 
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| Posted: 20 Dec 2009 15:58 | [?] |
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| Johny...that looks great. I'm interested to see it mounted. Post pics when you do. | |
| Posted: 22 Dec 2009 07:30 | [?] |
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Johny Kidd: What are the dimensions of the tank? Did you do any baffling or fill in there to act as a condensation point or catch medium for the oil vapors? +1 on wanting to see pix. Planning on producing those??? 
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| Posted: 22 Dec 2009 07:52 | [?] |
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Quote:
I don't know much, but I would be reluctant to face the filter into the wind. I don't think you want positive pressure on the downstream side of the breather system. Hopefully more tech-savvy folks will comment. I placed my filter in the front with a hose running down near the kickstand bolt. I figured air passing over the filter and air flowing around the hose at the bottom would cause negative air pressure causing air to be pulled out of the crank case. I have had zero problems and I rarely have to clean my filter. |
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| Posted: 22 Dec 2009 18:59 | [?] |
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Quote: -Thanks ! Johny...that looks great.
Quote: -It's welded from square profile pipe which outer diameters are 20mm x 80mm (millimeter). There is no baffling inside the can, just empty pipe.
Johny Kidd: What are the dimensions of the tank? I did modify it a little since the pic was taken and now its waiting for new paint. I will post a pic when ready and installed! Quote: - Maybe, I'll let you know if i do Planning on producing those??? 
btw. sry my bad english
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| Posted: 28 Dec 2009 08:52 | [?] |
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| Has anyone done the breather mod and had problems with it or gone back to stock? I have a buddy that did it to his and hated it? He claimed you had to drain it all the time and and the bike seemed to spit and sputter more. Anyone hear of this or have this problem? | |
| Posted: 28 Dec 2009 20:38 | [?] |
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| I have not had a problem. I do pop it open and drain it pretty regularly...but other than that I've noticed absolutely zero difference over stock. | |
| Posted: 29 Dec 2009 09:24 | [?] |
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For the Commiefornia bikes
I just pulled the hose off the carb and glued a bolt in the hose and tucked it under this connector 
Then for the fuel tank I zip tied it to the air box 
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| Posted: 30 Dec 2009 17:04 Last Edited By: Johny Kidd | [?] |
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Here ya go. Some pics of my breather setup.
It needs just a couple hose clamps and it's ready. 
[s sorry about crappy pics 
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| Posted: 30 Dec 2009 20:19 | [?] |
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Quote:
bajabomber87 Then for the fuel tank I zip tied it to the air box Why did you plug the fuel vent tube??? According to the owners manual http://www.buell.com/om/99474-09Y_en/file-8.asp a "Obstructed fuel tank vent valve or pinched vent tube." can cause "Starts But Runs Irregularly or Misses" |
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| Posted: 30 Dec 2009 21:42 | [?] |
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| ^ yup, the tank needs to breathe. As the motor consumes fuel the empty space needs to be taken up by air. Otherwise you create a vacuum in the tank and overwork your fuel pump. I bet when you remove the gas cap you hear a sucking sound now. | |
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