Additional crackcase breather

[vfrman]

Then why do we need a breather to begin with?

[Phil Norton]

There'll always be a small amount of gas that blows past the rings on the power stroke, due to the pressures involved. Without a breather the pressure would slowly build in the crankcases and reduce engine performance.

[vfrman]

So why do enduro racers run a hose from the breather to the oil fill?

[hunter]

An engine breather should run to a catch tank.

[CMSMJ1]

Aye, but then some tanks then have either a vent to atmosphere or some then have another line to the oil filler.

Kind of pukka cool...might get one..lol

[hunter]

You can just vent it to atmosphere,But you have to keep an eye on it,empty it if necessary.