New breather setup
Ultimate HDF Member
Joined: Jul 2014
Posts: 5,649
Likes: 430
From: MASS_hole
Stellar HDF Member
Joined: Mar 2017
Posts: 3,312
Likes: 1,878
From: Conn.
I know the early EVOs were a crank case breather system and HD changed it at some point to head breather system but I dont know the year they did this. I sure someone with the knowledge will chide in shortly. Umbrella vavles were used with the head breathers only that I know of. Does your heads have a bolt on the side just above the air cleaner?
Seasoned HDF Member
Joined: Mar 2010
Posts: 21,006
Likes: 7,541
From: Poolville
Good machined cylinder bores with known working umbrella valves, you can put those hoses in your boots. Run my hoses to the ground and may of gotten a drop hit the ground after 7 hard years with the 89", the current big cube high compression engine doesn't even have hoses off the head turn downs and not a drop of oil on the engine in 4 years, give credit to the the guy that does my cylinder boring.
If you are spewing oil out the breather system with a top breather, repair the base problem and not mask it, the money saved from not buying gizmo's can replace hardened umbrella valves plus get the hoses out of the back of the air filter plate, eating your own chit is for chickens, not engines.
The OP's breather system is right, may offend a few tree huggers but a Harley is built to De-EPA and make it better.
If you are spewing oil out the breather system with a top breather, repair the base problem and not mask it, the money saved from not buying gizmo's can replace hardened umbrella valves plus get the hoses out of the back of the air filter plate, eating your own chit is for chickens, not engines.
The OP's breather system is right, may offend a few tree huggers but a Harley is built to De-EPA and make it better.
Cruiser
Joined: Dec 2014
Posts: 159
Likes: 95
From: Sydney, Australia
Good machined cylinder bores with known working umbrella valves, you can put those hoses in your boots. Run my hoses to the ground and may of gotten a drop hit the ground after 7 hard years with the 89", the current big cube high compression engine doesn't even have hoses off the head turn downs and not a drop of oil on the engine in 4 years, give credit to the the guy that does my cylinder boring.
If you are spewing oil out the breather system with a top breather, repair the base problem and not mask it, the money saved from not buying gizmo's can replace hardened umbrella valves plus get the hoses out of the back of the air filter plate, eating your own chit is for chickens, not engines.
The OP's breather system is right, may offend a few tree huggers but a Harley is built to De-EPA and make it better.
If you are spewing oil out the breather system with a top breather, repair the base problem and not mask it, the money saved from not buying gizmo's can replace hardened umbrella valves plus get the hoses out of the back of the air filter plate, eating your own chit is for chickens, not engines.
The OP's breather system is right, may offend a few tree huggers but a Harley is built to De-EPA and make it better.
Dave.
Seasoned HDF Member
Joined: Aug 2008
Posts: 5,070
Likes: 2,115
From: Ohio
Thinking kicks in every now and then, finally found that beer mug with the new system
Last edited by 1997bagger; Jul 16, 2018 at 05:47 PM.
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