Head breather routing
Road Warrior
Joined: Jul 2013
Posts: 1,476
Likes: 5
From: Florida
I have never ran a filter nor do I intend to. That vent goes one way. There are arguments for and against it but I always run them open. One less filter to clean or worry about. For the S&S I routed mine the same with an old S&S carb I had but I used the flexible hose that comes with the S&S and cut it. I then bought a plastic T fitting from ACE and used that to route it to the bottom. Did the same thing and was of course very cheap. Ran it that way for years. Nothing got sucked back in to blow up my motor!! Then on the breather plate I plugged the hole with a bolt and LOTS of locktite.
I agree. I just tee'd the hoses coming off the breather bolts to a single hose right under the carb, ran the single hose between the jugs and then down between the inner primary and motor, no filter.
The oil vapor/mist coming out of the hose is so minimal, there is little to no chance it would ever cause any issues. Its not like its going to "dump" oil out at any given moment.
Only argument I ever heard for a filter or screen even remotely valid was that someone said a dirt dobber or something crawled in there and plugged the hose. That would have to be a 1/1,000,00 chance, given the environment they would be going into.
You could just put some screen or mesh over/in the hose end if this concerns you at all.
Road Master
Joined: May 2009
Posts: 1,232
Likes: 8
From: Powder Springs, GA
I agree. I just tee'd the hoses coming off the breather bolts to a single hose right under the carb, ran the single hose between the jugs and then down between the inner primary and motor, no filter.
The oil vapor/mist coming out of the hose is so minimal, there is little to no chance it would ever cause any issues. Its not like its going to "dump" oil out at any given moment.
Only argument I ever heard for a filter or screen even remotely valid was that someone said a dirt dobber or something crawled in there and plugged the hose. That would have to be a 1/1,000,00 chance, given the environment they would be going into.
You could just put some screen or mesh over/in the hose end if this concerns you at all.
Thread Starter
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Seasoned HDF Member
Joined: Sep 2012
Posts: 6,570
Likes: 590
From: almost there
OH sheite freaking Dirt dobers everywhere here, they even clog up my elec outlets in the garage, so That did cross my mind. Im finished with the breather project and thanks to all for the info.
S&S already had the head nipples so I made my own piping with a brass tee for about$15.
I made a large arch to drain back to engine then Tee under the tank ty wraped to frame going behind tranny and out the right side by exhaust. Pretty much made it all disappear nice and clean. My S&S did not like hot oil mixed with gas, aint no 2 stroke. Less carbon build up on pistons too...
S&S already had the head nipples so I made my own piping with a brass tee for about$15.
I made a large arch to drain back to engine then Tee under the tank ty wraped to frame going behind tranny and out the right side by exhaust. Pretty much made it all disappear nice and clean. My S&S did not like hot oil mixed with gas, aint no 2 stroke. Less carbon build up on pistons too...
Last edited by aces&8s; Jun 13, 2014 at 08:38 PM.
Dirt don't hurt
Joined: Jan 2011
Posts: 21,065
Likes: 4,561
From: Haslet Texas
I made a large arch to drain back to engine then Tee under the tank ty wraped to frame going behind tranny and out the right side by exhaust. Pretty much made it all disappear nice and clean. My S&S did not like hot oil mixed with gas, aint no 2 stroke. Less carbon build up on pistons too...
Why not?
S&S sells a tube to do exactly that (comes stock with a new carb) so why would it upset your carb.
Thread Starter
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Seasoned HDF Member
Joined: Sep 2012
Posts: 6,570
Likes: 590
From: almost there
Also, Heat is an engine killer, say it's 90* outside and the heads are 225*, the Rebreather carb is sucking in the 225*with the 90* ambient, engine not happy, makes for easy PINGING and hotter engine.
Last edited by aces&8s; Jun 14, 2014 at 12:05 AM.
Road Warrior
Joined: May 2013
Posts: 1,430
Likes: 55
From: Florida
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Seasoned HDF Member
Joined: Sep 2012
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From: almost there
Nice use of a cowbell, very innovative. Thanks.. Like that vintage picture of you on the mini bike. I had one just like that when I was 8 and had bike fever ever since.
