That means that 100% of the oil mist ends up in the combustion chambers. Not sure if that is really an improvement.

 

I would think should be some type of moisture from vapor in it atleast, Not bone dry.

 

Both of my Evo's have no discharge from the breather hose, not even a drop when they sit for awhile. This is a non-issue.

 

well mr. swedish, this has been going on since the 50's and became standard in the 60's.
in a healthy engine, it poses NO issues.
problems arise with age and wear, so a band-aide instead of a cure.
next you will say no valve stem seals are not good, hummmmm, standard on the older hd but my 1974 xlch will 200,000 miles has not complained. sure, it marked it's spot but then again no standard for emission control for it.
ANY ENGINE OPERATING IN DESIGN PARAMETERS SUFFERS NO ISSUES.
believe it or not, most issues are self induced.

 

I think it's quite common knowledge that feeding oil mist from crank case ventilation to the intake will result in carbon build up in the combustion chambers, and that can be avoided by utilizing some kind of external breathing system. For instance the solution on topic of this thread. Some people find this to be a good solution, others do not.

As for the rest of your reply, I don't really get what you are talking about. Maybe my skills in the English language fails me. But Ironheads are really cool bikes either way.

 

Here's my breather setup and here are my plugs after a thousand miles.




If you're breather is putting out so much oil that you're fouling plugs, misting the bottom of your bike or you need a catch can then you have a problem that will not be solved by venting to the air so you should get it fixed.

 

The topic of this thread is quite the opposite, the OP is not getting any oil mist at all in the catch can, and the question is whether or not this is an indication of something being wrong with the breathing system of the engine.

Also I don't think anyone is claiming that routing the oil mist into the intake will foul plugs. It is the build up of carbon in the combustion chambers and on piston tops over time that some want to avoid by using an external breather setup.

But of course a lot of bikes work flawlessly for years with internal breathing as well so I guess it's a matter of personal preference. To each their own

 

it is on target!
if he isn't getting oil to Nth degree then be happy. my ? is since he had no issue then why the band-aide???
how do you know the carbon as you say is from the c/c vapor???
gasoline is a fossil fuel right?? then it is a carbon base product and yep it will leave deposits no matter the the additives. how do you know it is not slippage past the rings???
so you say a compression and leak down tests prove other wise??? well you only test upper ring seal, NOT oil control.
so you say dyno results show other wise, hummmm, so does killing the charging system. a dyno is a tool, ONLY, a predictor, NOT gospel in stone, seen toooooo many dyno guys knocked off the horse by shade trees who know what they are doing.
that said, some cars today have computer controlled alternators that only charge when needed. japanese cars are so highly tuned that removing the oil fill cap will cause them to stumble or die, the c/c system built as a system and not add-on like american. my last 3 cars had no PCV
but like you said, to each his own.
just a passing thought in particular with HD. rpm riding range has a lot to do with the oiling system. the engine needs diff'l pressures to move oil around and guess what, that engine will start going positive pressure around 5k and oil will start pooling unless your engine uses a pan system. but even those systems can vapor lock under certain conditions at sustained high rpm.

 

never mind the reply...

I LOL about the sig line...