New Breather Filter Test *PICs*
Club Member
Joined: Jan 2006
Posts: 1,360
Likes: 3
From: Idaho Falls
I initially had the breather plumbed into a filter but found that the filter had to be kept clean otherwise the side was misted with oil from the filter. I now just vent to ground through a sink supply line (about 20" long). See pictures. I've not found any oily mist on the lower frame rails with this vent line. And ... the best part ... I think the bike runs better without that oily mist into the cylinders.
Elite HDF Member
Joined: Jul 2008
Posts: 4,762
Likes: 12
From: north jersey
Blackfly what are those orange things in your frame ?
At first I thought venting oil under the bike would be a problem with traction in the rear wheel but unless you're shooting out globs of oil (which you never would with these setups) traction should be good to go.
I might look into one of these setups when I switch out my air cleaner.
At first I thought venting oil under the bike would be a problem with traction in the rear wheel but unless you're shooting out globs of oil (which you never would with these setups) traction should be good to go.
I might look into one of these setups when I switch out my air cleaner.
Thread Starter
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Seasoned HDF Member
Joined: Dec 2008
Posts: 19,745
Likes: 1,183
From: Jamestown, CA
go to to DK Custom and they have kits built just for that reason. what you have is almost spot on. if it does cause a mess...just route a longer line down the frame to the ground are.
http://dkcustomproducts.com/All-Twin...ngines_c76.htm
Thanks
Club Member
Joined: Jan 2006
Posts: 1,360
Likes: 3
From: Idaho Falls
Blackfly what are those orange things in your frame ?
At first I thought venting oil under the bike would be a problem with traction in the rear wheel but unless you're shooting out globs of oil (which you never would with these setups) traction should be good to go.
I might look into one of these setups when I switch out my air cleaner.
At first I thought venting oil under the bike would be a problem with traction in the rear wheel but unless you're shooting out globs of oil (which you never would with these setups) traction should be good to go.
I might look into one of these setups when I switch out my air cleaner.
Last edited by OneBlackFly; Jan 3, 2015 at 04:43 PM.
1. Your engine runs best with a combination of gas and cool air, adding hot air and oil will reduce performance
2. Most of that hot air is exhaust gases, which are oxygen depleted. It is the oxygen in the air that burns and provides power. Less oxygen, less power.
3. The oil will gum up your carb/throttle body, and also build up carbon deposits on your pistons. This reduces engine longevity and also tune stability.
Here a a couple of pics illustrating-
On a typical bike it will absorb all oil for 3000-5000 miles. Whenever you are washing the bike, spray the filter with a cleaning agent (soap, S-100, or similar) let it sit for 5-10 minutes while washing the bike, then spray it off. It is now ready to absorb another 3000-5000 miles of oil "blow-by" or carry-over.
Also, here is a link that has some good info on how to reduce the majority of the oil coming out of the breathers, if you have a bike that is really puking a lot of oil-
https://www.hdforums.com/forum/oil-a...f-my-bike.html
__________________
DKCustomProducts.com
DKCustomProducts.com
Stellar HDF Member
Joined: Jan 2013
Posts: 3,466
Likes: 425
From: Illinois
How come it's marked left,but is on the right side?
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Cruiser
Joined: Dec 2014
Posts: 107
Likes: 6
From: Miami, FL
There are quite a few reasons-
1. Your engine runs best with a combination of gas and cool air, adding hot air and oil will reduce performance
2. Most of that hot air is exhaust gases, which are oxygen depleted. It is the oxygen in the air that burns and provides power. Less oxygen, less power.
3. The oil will gum up your carb/throttle body, and also build up carbon deposits on your pistons. This reduces engine longevity and also tune stability.
Here a a couple of pics illustrating-
If you use a good filter, it will absorb the oil, and not spray a mist or drip onto the ground.
On a typical bike it will absorb all oil for 3000-5000 miles. Whenever you are washing the bike, spray the filter with a cleaning agent (soap, S-100, or similar) let it sit for 5-10 minutes while washing the bike, then spray it off. It is now ready to absorb another 3000-5000 miles of oil "blow-by" or carry-over.
Also, here is a link that has some good info on how to reduce the majority of the oil coming out of the breathers, if you have a bike that is really puking a lot of oil-
https://www.hdforums.com/forum/oil-a...f-my-bike.html
1. Your engine runs best with a combination of gas and cool air, adding hot air and oil will reduce performance
2. Most of that hot air is exhaust gases, which are oxygen depleted. It is the oxygen in the air that burns and provides power. Less oxygen, less power.
3. The oil will gum up your carb/throttle body, and also build up carbon deposits on your pistons. This reduces engine longevity and also tune stability.
Here a a couple of pics illustrating-
If you use a good filter, it will absorb the oil, and not spray a mist or drip onto the ground.
On a typical bike it will absorb all oil for 3000-5000 miles. Whenever you are washing the bike, spray the filter with a cleaning agent (soap, S-100, or similar) let it sit for 5-10 minutes while washing the bike, then spray it off. It is now ready to absorb another 3000-5000 miles of oil "blow-by" or carry-over.
Also, here is a link that has some good info on how to reduce the majority of the oil coming out of the breathers, if you have a bike that is really puking a lot of oil-
https://www.hdforums.com/forum/oil-a...f-my-bike.html