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Old 11-01-2009, 12:54 AM   #1 (permalink)
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Kuryakyn crankcase breather....

Looking for input,

Anyone running one of these crankcase breathers......

http://www.kuryakyn.com/index.cfm/go.../109/IMID/1046

It looks like it would end the drip I get out of the air cleaner onto the cam over. In the installation instructions it states the prefered way to vent this breather is with an open tube under the tank facing rearwards toward the seat. On my 2000 Dyna there is a plastic harness guide channel that sits on the frame backbone, that the vent tube could neatly be inserted into, to hide the vent hose. I'm wondering if this will eventually start to drip oil on the rear rocker cover.

Tech23

Last edited by Tech23 : 11-02-2009 at 11:21 PM. Reason: Changed title
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Old 11-11-2009, 01:38 AM   #2 (permalink)
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OK, I guess no one is using the Kuryakyn breather. I have the early style free breathing intake with the external breather pipe. Has anyone with this style intake modified the breather on their twin cam to keep the air filter from dripping oil? I have several ideas in mind, I just want to see what others have done and how well it's working. On this setup the breather hose enters the air cleaner backing plate below the carb throat. When the engine is shut down oil drips from the breather hose on to the air filter. The new style HD free breathing intake (Ness style) has the breather passages incorporated into the air cleaner backing plate with rubber hoses that aim the crankcase vent much closer to the carb/throttle body throat so the oil mist is better able to be sucked right into the intake. Does this setup cure the drip from the air filter when the engine is shut off? Has any one with this new style setup modified the breather?

Any crankase vent run downward would likely drip or need a filter, or collector. There are several on the market to do this. Any crankcase vent run up under the tank as high as possible then down the frame backbone toward the seat would probably return the oil to the engine, eliminating any drip because the oil wont be able to push that high. That's why I was asking about the Kuryakyn breather. In the installation instructions on thier site the preferred vent arrangement with this breather is up under the tank and toward the seat along the frame backbone with no filter. Open hose to atmosphere.

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Old Today, 03:33 PM   #3 (permalink)
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Just curious what year and model bike do you have.
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Old Today, 03:50 PM   #4 (permalink)
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They don't make one for late model HD's 09-10???
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Old Today, 04:03 PM   #5 (permalink)
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