Crank case breather alternative!!! The new and improved Krankvent!!

Buellxb Forum

Help Support Buellxb Forum:

beavecleave0957

Active member
Joined
Mar 31, 2010
Messages
38
Hey my buddy showed me these because he used them on his turbo 3000gt to keep a constant vacuum in the motor. I have not tryed this was wondering if anyone has tryed something to this nature?? Im just not a big fan of more hoses and the crap you have to poor out of the tube every 100 miles!!

So here you go check this out!! When i get the funds im all over it...

Scroll down till you see the Buell/SA
http://www.et-performance.com/kv.html#Pre93
 
BUELL & SPECIAL APPLICATIONS:
Racers & engine builders have asked for a simple, compact KrankVent™ that connects to the head breather ports & here it is. These compact bolts have the KrankVents built into the heads! Available in ½” threads (shown) for EVO’s or 3/8” threads for Twin Cam engines. Kit includes 2 Buell/SA bolts, instructions.
kit_sa_buell_lg.jpg
 
wouldn't you still need to run a line for all the fluid? I dont see that much of a benifit from the way you were looking of getting rid of hoses
 
i was thinking the same thing.. that "crap" needs to go somewhere, if it isn't coming out its being held in, correct unless there is some kind of diaphragm
 
Uhh, wouldnt those just replace the stock crankcase breather?? You would still have to do the same kind of thing...
 
kit-4_lg.jpg


you could just do it like this:
-krank vents in the head
-tube running from the head to the stock breather locations

Essentially your replacing the stock crank vents that blow oil all over the place with these that are a one way check valve that does not allow the oil to spray all over your intake.
 
the point of the breather reroute is to keep the oil mist spray and vapor and crankcase gases from entering in to the intake . the gases and oil mist and vapors dont burn very well and cause your engine to run at BELOW its' OPTIMUM level and with the breather reroute. you will get better mpg(a little bit) alot better performance like the engine was designed for, and no stuttering which was caused by the oil mist , vapors & bad gases from the crankcase going into the intake . the engine needs to burn oxygen and fuel not oil mist vapors or bad gases that dont burn well or dont burn at all, it kinda like your lungs it needs oxygen not smoke to work .


where would you put those at , as they are to small to fit in the pcv valves holes and you still need to run a hoses from them unless you direct them in to intake defeating in the purpose of breather reroute.the xb does not have holes like your pic above that is a harley or possibly older tuber buell with airfilter on side of the engine.I suggest re reading the breather reroute thread and why it is needed. TO GET RID OF THE BAD crankcase GASES and the oil mist and vapors.
http://www.buellxb.com/Buell-XB-Forum/Do-It-Yourself-Buell-Mods/Re-route-hoses/6/
http://www.buellxb.com/Buell-XB-For...Mods/How-To-Crank-Case-Breather-Mod-with-pics

from the service manual:
Crankcase Breathing System ,see fig.3-114. Presure created in the flywheel area on the piston downstroke is released through the REED VALVE into the gear case. From there a mixtre of crankcase air and oil mist is vented up the push rod covers to the upper rocker box(top of head).
see fig.3-115. Air is allowed to escape the rocker boxes by exiting the postive crankcase vent(PCV) valves(4)
locatedon top of the rocker boxes (top of rocker cover/valve cover).From the PCV valves the air enters the crankcase breather hoses(2,& 3). The crankcase breather hoses route through the air cleaner base plate (1) to the air box where it isdirected inside the air filter element and back into the engine. the oil mist collects and eventually returns to the crankcase through oil passageways in the cylinder heads. that how it is originally designed to work. maybe that might help you understand it somewhat better. see figures below..
1714_20100301130857_L.jpg

1714_20100301130925_L.jpg
 
to add ; you could put in a pvc pipe end cap into the hole where the pcv valve goes into, and drill a hole into the end cap and screw your "krank vent" into it , but without a hose with a filter on the end somewhere , and just the "krank vent" with no hose you run the risk of dust and other debri getting into it and clogging it up which would cause excessive pressure to build up in crankcase ,thats not good. or just as bad, it could get clogged open from heat causing the oil and crap inside it to gum up and clogg its diaphragm open letting the oil mist and vapors to shoot all over the top of the engine.

there is secondery Purpose to the breather reroute and that is to allow any water vapors to escape to prevent any problems that the condensation that has accumulated in the crankcase and rockerbox.

but over time the valve or diaphragm in it will fail (like the pcv valve in it now has done), when that happens it will most likely fail in a way that it wont keep any oil mist from coming out of it. and will need replacement , with the breather reroute the only thing that might need replacement is the small air filter if ist not in higher mounted area and away from the main hose if it gets clogg from oil and crap and dirt fromoutside, and drain catch can.
'
I'm not saying it is bad ideal , kind of good ideal , just saying it will need replacement sooner or later, and still needs hoses with filter.
 
Q1. There are now several "KrankVent" type valves on the market. How is the ET KrankVent different?

A1. You know when something works when everyone wants to copy it. Well, in this case there is a difference. It took ET-Performance over four years to come up with a better mousetrap (valve) after trying everything under the sun. The other valves all use umbrella valves or a valve that is constrained in some manner. Now these valves have to operate in tough conditions of high heat, oil, water, acids, and respond to pressure differentials that occur over 50 times a second at 3000 RPM. No other valve can stand this constant torture. Below are shown the valves from a couple of these crank case valves:

faq1.gif


Note that the three on the left are identical in appearance. Some manufacturers use better materials for the umbrella valves, but they will eventually fail and die. Besides, head breathers already have two umbrella valves that don't work ... why add a third? The KrankVent valve material is the same material used in the diaphragms of pressure regulators used to control the flow of coolant in nuclear reactors! In other words, it cannot fail or there will be a meltdown. In years of operation in race conditions, we have not observed any sign of wear. Gasoline, oil, alcohol, solvents, etc., will not harm the valve material. The KrankVent will work totally submerged in liquid, in any orientation, and is self cleaning. Finally, the KrankVent is guaranteed forever to the original owner. Now that is quite a difference!

Here is the FAQs on applications talking about the breather system and also talking about the PVC valve its interesting stuff
http://www.et-performance.com/faq.html
 
6397_20100407143159_L.jpg


Now these go in place of the PCV and screw into the head
im sure you keep the grommet but with these running off the stock location your going to get very little liquid comming up out of those. you might be getting the "gases" and sure you can run a breather system off these but it will get rid of a lot of the nasty liquid . I wouldnt say this gets rid of everything but it can greatly reduce everything. Im still working on how i want to design mine "but to each his own".

These might be expensive in the beginning but in the long run the might quote "over time the valve or diaphragm in it will fail" but i dont think they will but if they do they have a lifetime guarantee...
 
XB engines already have PCV valves. There are no holes in the heads to screw those in to.

The pic of the vent things installed looks like a Sportster airbox.
 
im sure you keep the grommet but with these running off the stock location your going to get very little liquid comming up out of those.

yes you might but then the liquid which is there either way would be staying in instead of coming out is the point we are getting at.

Matter can not be created or destroyed so the stuff that's already in there has to come out liquid n' all! so unless these things defy science itself and get rid of the liquid with magic then when the liquid doesn't come out you're in shitsville or if you don't hook up hoses then it will spew all over your bike... these things must be made in hogwarts along with electric turbos:p
 
They are i was just showing that you could run those vents straight back to the air box with out having the oil problem

CLARIFICATION:LIQUID=OIL in that last post


And im just saying that you could take these to put in the place of the other PCV valve then run the hoses for the stock location.

Or second you could run a small re-breather system

The object of this for me is to not have a crazy re-breather system with the catch can. But who knows that might be the only alternative...
 
i don't think its that crazy of a mod.. my dirt-bikes and older motorcycles run right to the ground, and aside from some small drips of oil it works fine that way
 
hey ,have you seen the liquid crap and oil that comes out of the engine in a breather reroute,THE QUESTION IS do you want that going into your intake or do you want get rid of all together or , would you like to keep that crap in your engine ?????

here take a look...




http://www.youtube.com/watch?v=z_8MuVfarkg


again i think he or she does not understand the point or reason of breather reroute. and NOTHING can last FOREVER ,except pure energy. i have seen many things guaranteed for life time and then the company goes under and bankrupt . oh the reason why other companys copy things from other company is not always because they work but the main reason is because they SELL, and they want to make money too. sorry.


here is how PCV valve is suposed to work , if it works correctly but they dont . not on any vehicle i have seen (al least not after so many miles or time ), the oil and other liquids are suposed to stay in the engine while the gases are vented out in to the intake or the outside atomosphere. the thing is that liquids escape also in the intake or into catch can or out on to or below your engine which ever way its was design to flow to.

 
what year make and model is your motorcycle, and have looked at the pcv valves or hoses froom pcv to intake or inside your airfilter box on your motorcycle? , dont want to be rude but did you read ALL of EVERYONES POST ON THIS THREAD.??
 
so did anyone learn something from this thread , i think i might have learn something, wait, no i think i already knew that (what i learned.)??!?!!!!!???
 
hey ,have you seen the liquid crap and oil that comes out of the engine in a breather reroute,THE QUESTION IS do you want that going into your intake or do you want get rid of all together or , would you like to keep that crap in your engine ?????

here take a look...



again i think he or she does not understand the point or reason of breather reroute. and NOTHING can last FOREVER ,except pure energy. i have seen many things guaranteed for life time and then the company goes under and bankrupt . oh the reason why other companys copy things from other company is not always because they work but the main reason is because they SELL, and they want to make money too. sorry.


here is how PCV valve is suposed to work , if it works correctly but they dont . not on any vehicle i have seen (al least not after so many miles or time ), the oil and other liquids are suposed to stay in the engine while the gases are vented out in to the intake or the outside atomosphere. the thing is that liquids escape also in the intake or into catch can or out on to or below your engine which ever way its was design to flow to.

first of all, Energy is nether created or destroyed, only conserved.

Second, youtube vidoes that show you how condensation forms with with the use of a breather is useless, simply that this system is already has a problem with it. Also, if this "liquid crap" was inside your engine, it would eventually cause your oil to turn milky white and cause it to look like you have a leaking coolant headgasket into the crankcase.

Now, i havnt read all the posts here, but i can tell you KrankVents work, and work well. Installing a Krankvent into the crankcase system will not deplete the need for a catch can. The design of these one way check valves is to keep a vacuum inside the crankcase - less windage inside the case = more power plain and simple. Problem is with a individual throttle body system is it produces relatively lowwwwww vacuum, at 5-10% throttle expect zero vacuum in the intake, and it relies soley off Alpha-N tuning (throttle position only). This being said, a vacuum supply to supply the engine is scarce, only if a good plenum source was present would this work. This filter on the end of this so called dinky catch system will do absolutely nothing for you, only vent pressure and your crank will be at absolute pressure or atmospheric. At least with the hoses running to the intake you will get a suction of some kind.

Point blank the filter/dinky oil catch can is a crappy idea. I have been studying/playing with different engine dynamic systems for over 4 years now. If you want a system that is going to work do this:

Install Krankvents (kudos to ET-performance btw, this vent is superb in design and construction, whoever disagrees with this needs to do more research on their product, as it is bar none the single best one way valve ever produced, as well as my own personal experience)

second, install a small catch can downstream of the vents, preferably something that will hold approximately 10oz.

third, run a vacuum source off the catch can (this can be done through a manifold, or by tapping downstream of the exhaust which can pull vacuum, or by a vacuum pump)

This is the only effective way to do this mod and GAIN anything. Please DO your research (i dont care how many posts you have on here or what your user rank is, or how long youve been a member), as Im simply passing one valuable piece of infomation on, I have years of experience with 1000hp turbo cars, ITB systems, Nitrous, and motorcycle applications
 
Back
Top