Crankcase breather help
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Intermediate
Joined: Mar 2009
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Crankcase breather help
I have a 94 wide glide with the big sucker filter and want to divert the crankcase output to a different system. There are many different systems out there to chose from and I would like some opinions on which way to go. thanks ...
Ultimate HDF Member
Joined: May 2006
Posts: 6,590
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From: Ohio
Isn't the big sucker the one where the breathers vent directly thru the backing plate into the carby? If so you will need one closer to stock like a screaming eagle breather backing plate that vents to a hose that you can vent to a small filter or better yet under the bike.
Stellar HDF Member
Joined: Jul 2011
Posts: 2,583
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From: Boston, MA
i have always had good luck with just doing as Beemervet says and just plumb them underneath the bike and add a ziptie or three to the closest frame rail.
question: a properly filled engine and assuming it's within 10% of optimal tuning, how much oil should actually be coming from these breathers?
question: a properly filled engine and assuming it's within 10% of optimal tuning, how much oil should actually be coming from these breathers?
Ultimate HDF Member
Joined: May 2006
Posts: 6,590
Likes: 444
From: Ohio
What comes out of the breather is really just a mist. It can be increased by filling the oil above 1/2 quart low or by running at high speeds (80 or above). Running an open hose doesn't result in oil blown everywhere, and if you have environmental concerns you are talking to the wrong guy.
Stellar HDF Member
Joined: Jul 2011
Posts: 2,583
Likes: 115
From: Boston, MA
What comes out of the breather is really just a mist. It can be increased by filling the oil above 1/2 quart low or by running at high speeds (80 or above). Running an open hose doesn't result in oil blown everywhere, and if you have environmental concerns you are talking to the wrong guy.
the only leaking i've done on the rg is into the primary. Forget putting all that gunk on my pistons, i vent to just behind the tranny.
Seasoned HDF Member
Joined: Dec 2010
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From: Coromandel Peninsula New Zealand
The longer the hose the higher the pressure but the trade off is the oil doesn't land on your bike. I vent them over the rear fender if I use a hose because if you have a problem and it pukes oil out the breather, you don't end up in a ditch or as a Mack Truck hood ornament.
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smokeygold
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Dec 15, 2006 08:22 PM
