How-To: Crank Case Breather Mod (with pics)

[Buell_Magic]

Pockets, sorry we have been up in Canada and havn't had much time online. Indeed it is a shifter. I drilled a hole in the top piece that allows the fluid to drain and be held in the twist off bottom piece.


Kevin

 

[dallasb]

Here is how I did mine. Sorry for the crappy cell phone pics

 

[twistedrose]

mine is similar to dallas, check it out, let me know what ya think.

 

[dallasb]

Looks good twisted. I just did it yesterday and went on a ride. So when I back I went to drain it to see if anything would come out...then I realized that I never actually closed it...doah

 

[AdventureUly]

I just did this at the weekend, just like the set up Twistedrose has done.

WOW what a change. I should have done this a long time ago. It was easy, cheap and has improved the way the bike runs by at least 50%.

I do think it is also a bit more responsive now.

[up]

 

[nativeXb12Rbuell]

I'm doing the breather reroute , and thought i would show you the reason why you should consider doing the mod , Look at all the oil and gunk and dirty crap that is all over the top of the air box and the bottom around the air sensor and the hoses from the PCV valves and look at the oil build up on the filer (blue seal and the filter media itself) all that was getting sucked into my engine. after the breather mod is done it's going to be all clean air..


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[nativeXb12Rbuell]

also even if dont do the mod take a look at your pcv valves, my rear one was leaking oil mist and gunk all over my rear rocker box cover , the leak was from where the hose ataches to rear PCV valve with the plastic zip tie , it was very lose causing the oil mist to get blown out all over the rocker box cover . what a mess . it took an hour to clean it all off , very tight spaces in there. so take a look at yours by taking off the top part of the air box cover then look at rear rocker box cover to see if it has dirt and oil on it, the front can be seen by looking under front of frame(fuel tank). just thought i would give you guys a heads up to check for this on your buell .

 

[twistedrose]

haha, I guess my bike does use the whole rear suspension travel I turned the breather filter outwards, I am a very large rider, and started to squish the breather filter ! No further issues.

 

[rexfan]

I finished this mod a few days ago and am really enjoying how much it has changed the low rpm range of the bike. One issue though, I ran my line just like twistedrose and mounted the filter in a similar location. I am experiencing a tremendous amount of blowout from the filter. Like it is covering the swingarm and pratically dripping out of the filter. I have the end of the line plugged with the radiator plug. Should I leave it unplugged?

 

[BuddhaBuell]

put your catchcan before your filter [up]

 

[dallasb]

rex, I have some pix above on how I did mine. I just made sure that my filter was in the up position instead of laying down and haven't had any problems with it. I drained it today after about 50 miles and its amazing how much gunk came out of it.

 

[rexfan]

Sweet. Thanks for the replies. I will try and flip the filter around. Right now it is lying on its side. It is really amazing how much gunk is coming out. I now know why it makes such a drastic difference in how the bike performs.

 

[303xb]

what are you guys using to plug the end of the drain part of the hose...i can't figure out what that part is.

also,buddha, what is your catchcan made of.

Lastly, my filter is mounted a little higher/hidden (see link) any risk there of that thing catching on fire if soaked with oil and next to the heads like that?

http://img31.imageshack.us/img31/4182/25797374855588732758648.jpg

 

[BuddhaBuell]

303
heres what I had originally in its place, it was a pop bottle blank, my respected and much more knowledgable peers here @ BuellXB.com pointed out that it looked like a used condom when it had gunk in it..LMAO!

so I thought that an empty film canister would suffice [up]


also IMO you'll have no worries of fire..and they are using a petcock in the ends..

 

[303xb]

what is the radiator cock thing that everyone else is using? shoudl i for sure do a drain before the filter?

 

[BuddhaBuell]

most either go with a petcock after the filtre at the end of the hosevor they'll put a catchcan before the filtre, personal preference I guess

 

[303xb]

wtf..i cant find a petcoock anywhere...is that what i ask for? 3/8"?

 

[acepilot79]

yup. look in the help section in your local autozone, pepboys, O'Reilly's, what have you. I believe its full name is radiator drain petcock.

 

[BuddhaBuell]

tons on them on ebay 303
inside dia of hose is 3/8ths I believe

(our Buell riding brother Urban Assault who started this thread used a Radiator Drain Cock with 3/8" threads)

 

[rexfan]

I used part #61103, just like in the op.