Originally Posted by number9
Pardon my ignorance,
there is a breather valve on your bike already,
the billet part is just a replacement.
the breather valve is the little round thing, that is
screwed into the engine case directly, with a flap
valve inside, comparable to those to be found in
2 stroke engines. Take a closer look, it is a black
plastic part on Ric's bike.
so Ric and Ian996 have got basicly the same set-up,
with Ric's hose to the K&N filter being very short,
not allowing to collect too much oil to flow back to
the cases as intended with Ian's 20" hose.
i have seen many different applications, with or
without hose, and with hoses in various lenghts,
i would go with something Ian has intended, but
have as said a rather long hose routed to the
rear of my bike with no filter at all.
original set up has a breather valve, that is routed
to the catch canister, on from thereon to the airbox,
not to blow oil remains into the environment but
into the airbox.
If you disassemble this set-up from your bike, you
are asked to close the then appearing hole in your
as it is christmas, see this picture of a dis-assembled
nichols breather, the two pedals are
clearly visible, they are blown open by the
engine's pressure and close themselves
afterwards, so are basicly flapping all the
time, never actually closing at high revs
eventually, as the ones on the 2 stroke bikes.