Breather relocation

[Gary smisek]

Hey guys Gary here say I got 2017 S&S v111 motor and it's got the venting coming out the heads going into the carburetor backing plate you know the routine you guys know a kit I can purchase to Route the lines down under the motor

 

[Mickmorris]

Hey guys Gary here say I got 2017 S&S v111 motor and it's got the venting coming out the heads going into the carburetor backing plate you know the routine you guys know a kit I can purchase to Route the lines down under the motor

Why?

 

[Gary smisek]

Why?

 

[Gary smisek]

Well I guess the oil tank sumped down into the case so when I start it up this spring you know some of the oil is going to come out I didn't want to puke in around the carburetor

 

[Rottweiler]

Well I guess the oil tank sumped down into the case so when I start it up this spring you know some of the oil is going to come out I didn't want to puke in around the carburetor

I believe you just need a hose and a filter/ breather, then plug the air filter.

 

[mleach72]

Well I guess the oil tank sumped down into the case so when I start it up this spring you know some of the oil is going to come out I didn't want to puke in around the carburetor

There is very little chance that oil will come out of that breather line going to the air cleaner. The 4 1/8 bore engines are vacuum breathers. The front breather is hooked to the manifold. That puts a vacuum in the rocker boxes and engine block. The rear breather has a one way check valve in it. That valve closes as soon as the engine starts and produces vacuum. The only time it would open is to let out a sudden burst of pressure, like a collection of unburnt fumes igniting in the crankcase. Even that is unlikely, but you have to allow for the possibility.

 

[Gary smisek]

There is very little chance that oil will come out of that breather line going to the air cleaner. The 4 1/8 bore engines are vacuum breathers. The front breather is hooked to the manifold. That puts a vacuum in the rocker boxes and engine block. The rear breather has a one way check valve in it. That valve closes as soon as the engine starts and produces vacuum. The only time it would open is to let out a sudden burst of pressure, like a collection of unburnt fumes igniting in the crankcase. Even that is unlikely, but you have to allow for the possibility.

Thank you

 

[Mickmorris]

There is very little chance that oil will come out of that breather line going to the air cleaner. The 4 1/8 bore engines are vacuum breathers. The front breather is hooked to the manifold. That puts a vacuum in the rocker boxes and engine block. The rear breather has a one way check valve in it. That valve closes as soon as the engine starts and produces vacuum. The only time it would open is to let out a sudden burst of pressure, like a collection of unburnt fumes igniting in the crankcase. Even that is unlikely, but you have to allow for the possibility.

 

[Sven]

It's sort of a NASCAR racing loop. Kind of equalizes the pulse of the intake and pulse of the crankcase to go neutral. Same idea as the crossover pipe between the two exhaust pipes. Let it puke if it does. More like compression escaping past the rings would really make it puke I believe.

 

[Gary smisek]

It's sort of a NASCAR racing loop. Kind of equalizes the pulse of the intake and pulse of the crankcase to go neutral. Same idea as the crossover pipe between the two exhaust pipes. Let it puke if it does. More like compression escaping past the rings would really make it puke I believe.

 

[john sachs]

What I do with ANY bike that comes in for work is:
Block off the breathers from the intake manifold.
I put a long small diameter hose from the front head, and a long hose from the rear head into a catch can.
I remove 1 of the plugs from the rear of the engine case, install a hose, and put it in the catch can as well.
All done, solves the problem, ports, and plugs stay much cleaner.