09-11-2019, 07:36 PM
Zirconxi i tip mine out about twice per year or so, and take the whole contraption off including the elbow, not very often but good to find the difference between long and short trips.
The top breatherhose re-cycles the unburnt fuel mixture that escapes past the piston rings during the compression stroke and is beiing sucked up by the airbox under pressure, re-introduced to the engine etc.
also the combusted ( with a light carbon content ) gas that escapes past the rings is re-introduced in the same way, it is called positive crankcase pressure and all engines have it.
So rather that venting this gas mixture to the outside world they "spool" it through the engine so parts of it get re-ignited and produces an overall cleaner exhaust emission and slightly better fuel economy.
As a byproduct of this gas some oil escapes from the crankcase in the mixture and if not collected would build up in the airbox and eventually come out at an inconvenient time/place (on your garage floor ), however a bit of oil in the airbox is not a bad ting as long as the owner empties the clear hose on inspection, on the plus side if the oil mist travels past the throttle body it may actually lubricate the moving parts inside and thus provide the owner with even more reliable life of the engine ( at this stage the fuel has not mixed with the air and oil laden mist can be your friend.
Don't just remove the little hose as this would introduce dust and everything else that fits in the small opening unfiltered straight to the engine.
Much more input of other members is helpful and you make an interesting point and yes, i have stuck a camera inside the airbox and got some shots of the oil film
.
The top breatherhose re-cycles the unburnt fuel mixture that escapes past the piston rings during the compression stroke and is beiing sucked up by the airbox under pressure, re-introduced to the engine etc.
also the combusted ( with a light carbon content ) gas that escapes past the rings is re-introduced in the same way, it is called positive crankcase pressure and all engines have it.
So rather that venting this gas mixture to the outside world they "spool" it through the engine so parts of it get re-ignited and produces an overall cleaner exhaust emission and slightly better fuel economy.
As a byproduct of this gas some oil escapes from the crankcase in the mixture and if not collected would build up in the airbox and eventually come out at an inconvenient time/place (on your garage floor ), however a bit of oil in the airbox is not a bad ting as long as the owner empties the clear hose on inspection, on the plus side if the oil mist travels past the throttle body it may actually lubricate the moving parts inside and thus provide the owner with even more reliable life of the engine ( at this stage the fuel has not mixed with the air and oil laden mist can be your friend.
Don't just remove the little hose as this would introduce dust and everything else that fits in the small opening unfiltered straight to the engine.
Much more input of other members is helpful and you make an interesting point and yes, i have stuck a camera inside the airbox and got some shots of the oil film
.