VO2 breather tubes
VO2 breather tubes
So I was reading through the install instructions and checking out the diagram today so I'll be ready when the rest of my parts come in. The breather tubes on these feed through the backing plate and open up into the venturi and back into the throttle body. My question is... will the blowback actually go back in or will it run down the mount and onto the engine. I guess this is more aimed at anyone that has one and experienced it. Anyone else with thought they are most certainly welcome. I may end up with one of those cool under $50 mods but if I don't need to then...
Thanks ahead of time!
Thanks ahead of time!
Outstanding HDF Member
Joined: Oct 2009
Posts: 3,225
Likes: 9
From: 3rd Stone From The Sun
I installed the V02 last week and have ridden over 100 miles with it and have not had any oil blowback on the outside of the bike. I have another bike where I isntalled breather bolts and that creates a mist of oil on the pipes which I have to wipe down after every ride. I've read the arguments for not having the oil filter back into the air intake, but I notice no performance difference and would stick with the breather tubes if you don't want any oil on your pipes and/or engine. Your other option is those oil breather collector devices.
I installed the V02 last week and have ridden over 100 miles with it and have not had any oil blowback on the outside of the bike. I have another bike where I isntalled breather bolts and that creates a mist of oil on the pipes which I have to wipe down after every ride. I've read the arguments for not having the oil filter back into the air intake, but I notice no performance difference and would stick with the breather tubes if you don't want any oil on your pipes and/or engine. Your other option is those oil breather collector devices.
Grand HDF Member
Joined: Apr 2010
Posts: 3,589
Likes: 1,151
From: Brandon,Fl
Got 9k on my FLHR with the V/H vo2 and not a drop of oil has been seen. My opinion is that it is actually a small amount of oil that is directed back into the carb/efi throat. If that small amount was just directed back into the filter housing, it would eventually accumulate enough to cause a drip/spray out of the housing..
Road Warrior
Joined: Apr 2010
Posts: 1,739
Likes: 10
From: Suffolk, England
Kinda depends a bit on the mileage of the engine and how you like to keep the oil level.
Its it has quite a few miles on the engine then it does tend to slobber a little more. Same if you top your oil to the max rather than having it only half way. In both these cases you may get oil dripping out of the air cleaner if its the type that feeds the head ports into the throttle body.
Its it has quite a few miles on the engine then it does tend to slobber a little more. Same if you top your oil to the max rather than having it only half way. In both these cases you may get oil dripping out of the air cleaner if its the type that feeds the head ports into the throttle body.
Outstanding HDF Member
Joined: Oct 2009
Posts: 3,225
Likes: 9
From: 3rd Stone From The Sun
Thanks for the reply. I was thinking about the collector device approach, but why do that if there is no need and no improvement? I was more worried about it on the outside of the bike so you made me feel a little better about that. Are you running the stock cover on it or running it "naked"? Thanks again!
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