K & N filters

[Wrecka]

Not my word, Fred.
Someone else used it, warning of it being inside the old filter box.
My point is there would be no evidence of whatever the stuff is called, because it is being sucked directly through the throttle body into the engine and is NOT going through the air filter.

My bet is on it's passing straight out the exhaust port on the exhaust stroke..............

 

[1olbull]

My bet is on it's passing straight out the exhaust port on the exhaust stroke..............

If one is OK with having whatever enters the crankcase filter instead entering the combustion chamber - no problema!

 

[HansO]

Not sure I'd want that crap sucking into one of my intakes . . .
Just sayin' . . .

Standard intake system actually has crankcase breather coming out in to the inlet or engine side of filter, up in the forward section of airbox away from filter so as not to put oily fumes all over the filter, when you look down in to empty air filter box you are looking at a hole in bottom which is actually a drain for any rain or other water that finds its way in, now if you get a torch and look into front smaller chamber section of airbox you will find another hole, this is where the crankcase breather fumes enters the air inlet tract

isnt that exactly what was happening with the oem intake ?

Sure does just as it does in cars and any other bike allowing oil fumes to be burnt while engine is running and allows engine to suck in air back into breather to even crankcase pressure when cooling down, your system would work, only way it could be improved is if it was split in to three smaller OD hoses and shared between all three filters

 

[HansO]

If one is OK with having whatever enters the crankcase filter instead entering the combustion chamber - no problema!

it already did before with std airfilter

 

[Fingers]

Why couldn't you reduce the hose down to go into the hose going from throttle bodies to evaporative loss canister,or is there to much vaccum there?

 

[HansO]

Why couldn't you reduce the hose down to go into the hose going from throttle bodies to evaporative loss canister,or is there to much vaccum there?

Not all World region Rockets have a Evap Canister and I doubt have a direct vacuum would be a good thing as the breather is just there to get rid of excess crankcase pressure as the temperature rises and draw back in as it falls

 

[Fingers]

It was just a thought based on the way older cars (PCV) systems worked.thought if vacuum was low enough this might work ,but do not know vacuum on Rockets.

 

[Rocket Scientist]

Rocket Scientist, Which K&N filters are those on your bike? They look good and do they still fit under your bear claw???

Yes they fit under the claw. You have to turn them a little to find the happy spot. They are K&N RU-2780s.

 

[HansO]

It was just a thought based on the way older cars (PCV) systems worked.thought if vacuum was low enough this might work ,but do not know vacuum on Rockets.

from memory even in the older cars they still feed the fumes to engine/carby side of the filter in the Air Cleaner as there is low pressure vacuum there as is @Wrecka's setup, I only suggested splitting it in to three to share the fume over all three cylinders so any burnt oil carbon deposits would not be in just one cylinder not that there would be a lot but just a thought

 

[Fingers]

Some had PCV valve in valve cover going into intake behind carb