harley air filter breather yes or no?
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Intermediate
Joined: Apr 2020
Posts: 25
Likes: 2
From: haarlem
harley air filter breather yes or no?
Hi, what is your opninion on oil vapour going into the air filter, creating carbon build up?
I just bought a bike with 3000 miles, and i want to keep combustion as clean as possible....
Should I run it outside the intake? Or dont bother?
I just bought a bike with 3000 miles, and i want to keep combustion as clean as possible....
Should I run it outside the intake? Or dont bother?
Road Master
Joined: Mar 2020
Posts: 1,077
Likes: 267
From: New England
Let me tell you how this is going to go for you.
70% of the responses here will be in favor of the modification (venting to atmosphere / externally)
20% of the responses here will be warranty-praising naysayers who couldn't even fathom modifying what Harley-Davidson created.
10% of the remaining responses will be old-school members bashing you for not using the search function.
70% of the responses here will be in favor of the modification (venting to atmosphere / externally)
20% of the responses here will be warranty-praising naysayers who couldn't even fathom modifying what Harley-Davidson created.
10% of the remaining responses will be old-school members bashing you for not using the search function.
Grand HDF Member
Joined: Sep 2017
Posts: 4,359
Likes: 1,219
From: Dubuque, IA
Let me tell you how this is going to go for you.
70% of the responses here will be in favor of the modification (venting to atmosphere / externally)
20% of the responses here will be warranty-praising naysayers who couldn't even fathom modifying what Harley-Davidson created.
10% of the remaining responses will be old-school members bashing you for not using the search function.
70% of the responses here will be in favor of the modification (venting to atmosphere / externally)
20% of the responses here will be warranty-praising naysayers who couldn't even fathom modifying what Harley-Davidson created.
10% of the remaining responses will be old-school members bashing you for not using the search function.
This is a no brainer. So much so I'm not even going to tell you which group I'm in.
Road Warrior
Joined: Apr 2015
Posts: 1,535
Likes: 780
From: Manitoba
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Seasoned HDF Member
Joined: Dec 2005
Posts: 19,859
Likes: 7,980
From: poway
I guess, I'm in the 0.001% group that says, if it ain't broke don't fix it. 3 of my bikes vent to atmosphere, 2 to canisters and the atmosphere, and 2 to the AC.
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Road Warrior
Joined: Jul 2013
Posts: 1,649
Likes: 443
From: Indianapolis
Keeping a little oil out of the intake will help very little, most of the carbon build up comes from the hydro-carbon you fill the gas tank with.
If you get 50 miles per gallon, you are running ~80 quarts of hydro carbon through the gas tank for every 1000 miles you ride.
You would probably have less carbon build up just by running a Top Tier gasoline with additional detergents added.
If you get 50 miles per gallon, you are running ~80 quarts of hydro carbon through the gas tank for every 1000 miles you ride.
You would probably have less carbon build up just by running a Top Tier gasoline with additional detergents added.
Grand HDF Member
Joined: Nov 2012
Posts: 4,988
Likes: 2,078
From: Newport,TN area
...snip...
You would probably have less carbon build up just by running a Top Tier gasoline with additional detergents added.
You would probably have less carbon build up just by running a Top Tier gasoline with additional detergents added.
T.