Finally did my breather bypass (pics included)
Seasoned HDF Member
Joined: Apr 2010
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From: Connecticut.
Road Captain
Joined: Oct 2016
Posts: 654
Likes: 67
From: PacificNorthWest
[QUOTE=buell95;15970911]
I was thinking the same thing.
Looks like a fuel filter which are enclosed and directional (I believe)
Looks like a fuel filter which are enclosed and directional (I believe)
Road Master
Joined: Sep 2007
Posts: 963
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From: Displaced hillbilly
[QUOTE=Uncle Fuzzy;15971217]Just a collection point for the blow back oil
Seasoned HDF Member
Joined: Apr 2010
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From: Connecticut.
anyways, I have all the peticulars/parts and such....I even have a s/s hose I may gut out for the exit too the atmosphere.....but I may not do it at all, once I see whats what after a few months of riding.
Road Warrior
Joined: Aug 2014
Posts: 1,937
Likes: 320
From: Vancouver, WA
You will blow the weakest seal in your motor if you run it with that setup. It needs to vent to the atmosphere or back into your throttle body. What you've done there is "closed" the system and crankcase pressure will build until a seal blows. Then you're screwed. What you need there is a T fitting where you have the two lines going into that filter,, then a line coming off the T fitting going to the filter, then a line coming off the filter and exiting under the bike. You don't need that filter though. All it will do is get clogged with oil and block your system, not as bad as it's plugged by the way you have it now in that pic though! There are a lot of guys putting filters on their breathers but it's pointless unless you clean it very often and the only point of that is to keep the very small amount of oil contained in that filter rather than going out the tube on to the road. Remember, the gasses flow out, not in so you don't need a filter.
Last edited by RG Pilot; Feb 25, 2017 at 07:47 PM.
Club Member
Joined: Oct 2011
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From: Nor Cal
But the "takeaway" here is that your the backing mods done now
Also for the OCD/**** people, that inconsistent hose clamp positioning would bug me
Last edited by multihdrdr; Feb 26, 2017 at 07:53 AM.
Seasoned HDF Member
Joined: Sep 2007
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From: Danbury CT
As others have said a tee fitting would be better
Last edited by golfblues; Feb 26, 2017 at 08:27 AM.
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Club Member
Joined: Oct 2011
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From: Nor Cal
If you drill a few small holes in the top side of the plastic bubble then it will allow it to breathe. Just do it on the top side so it doesn't leak out all over your bike. You can also remove the filter inside the bubble as it will not do a thing but may block one side. Leave a small piece of sponge in there to absorb the oil.
As others have said a tee fitting would be better
As others have said a tee fitting would be better
Seasoned HDF Member
Joined: Sep 2007
Posts: 9,741
Likes: 1,598
From: Danbury CT
You're probably right and actually you need something that comes apart easily to empty. So a T fitting with a catch can with some breather holes in it would be the right way to do it. Make sure a hose goes to the bottom of the catch can with a sponge in it. Or just call DK and order their catch can. I have two and they work great.
Last edited by golfblues; Feb 26, 2017 at 09:03 AM.