looks like i have my answer now doesn't it- 
Blow by
MODERATOR
Joined: Oct 2007
Posts: 4,108
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From: New England
Road Captain
Joined: Aug 2009
Posts: 691
Likes: 4
From: H-TOWN TEXAS
Not to sound like a dick, but if it was built by the best in the business why is the breather still going to the air cleaner? (Of course assuming this is what your talking about).
Oil mist in the air/fuel helps power in no way shape or form. Running the breather hose it to a crank vent or even out into the apmtosphere is better then putting back through the carb.
Oil mist in the air/fuel helps power in no way shape or form. Running the breather hose it to a crank vent or even out into the apmtosphere is better then putting back through the carb.
Outstanding HDF Member
Joined: Dec 2008
Posts: 2,007
Likes: 353
From: Ohio
Not to sound like a dick, but if it was built by the best in the business why is the breather still going to the air cleaner? (Of course assuming this is what your talking about).
Oil mist in the air/fuel helps power in no way shape or form. Running the breather hose it to a crank vent or even out into the apmtosphere is better then putting back through the carb.
Oil mist in the air/fuel helps power in no way shape or form. Running the breather hose it to a crank vent or even out into the apmtosphere is better then putting back through the carb.
The crankcase has to be vented to dissipate a number of gasses that accumulate there. Some would shorten engine life if not removed. So the vent has to go somewhere. If it all went to the atmosphere the roads would eventually have a black coating due to the oil mist making them slippery and risky for motorcycles to be on. In addition there are environmental issues. So presently the breather system is all that's practical.
Seasoned HDF Member
Joined: Oct 2010
Posts: 12,233
Likes: 7,808
From: Along the shoreline in SW FL
In addition to not topping off the oil as high next time.....also check those 2x rubber hoses that route it to behind the air cleaner. Those hoses often crack, and leak. I replaced them with high temp silicon hoses from NAPA...about 3 bucks...I cut 2x lengths from it about 1.5" longer than originally was. (this was on my prior Harley...'06 FXDBI).
Didnt get a chance to read all the replies but I'll give a quick experience my buddy had:
His 01 ultra classic police parade is a 95" he had some cams put in and didnt like the way it ran, Couldnt keep up with my stock 03 RK Classic so he sent it back to ahve them changed back.
Got it back and it started doing to blow by. Seems that when you get a cam kit there's and o-ring for the oil pump(that wasnt with the cam kit the guys installed) that typical come with most cam kits.
Anyway the guys that did the work figured it out and replaced the oil pump o-ring and it's completely stopped
Kinda short on details because it wasnt my bike but I hope it helps.
His 01 ultra classic police parade is a 95" he had some cams put in and didnt like the way it ran, Couldnt keep up with my stock 03 RK Classic so he sent it back to ahve them changed back.
Got it back and it started doing to blow by. Seems that when you get a cam kit there's and o-ring for the oil pump(that wasnt with the cam kit the guys installed) that typical come with most cam kits.
Anyway the guys that did the work figured it out and replaced the oil pump o-ring and it's completely stopped
Kinda short on details because it wasnt my bike but I hope it helps.
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Seasoned HDF Member
Joined: Mar 2007
Posts: 66,948
Likes: 4,573
From: TOAK western branch
Yup. Modifications to the breathers can help. The problem can be as simple as a bad umbrella.
Seasoned HDF Member
Joined: Jan 2009
Posts: 5,151
Likes: 2,975
From: WACO
There ya go right there. Had the same thing happen to my 07 Ultra. My indie told me umbrellas will dry out and go bad. Causing air cleaner to "leak oil". He recommended trying not running the oil level all the way full.