Oil coming out the crank case breather

[Big dog papa]

My 2003 ss107 BDM blows oil out the crank case breather, (that's located behind the back jug) when I hot rod it a lot. My breather has a hose going to the crankcase. When I ride it staying under 3 1/2 grand no problems. Any ideas??

 

[awg]

I think sometimes they may drip or spit oil once in a while. Never heard or seen one that throws oil all over the engine. Maybe it's over full?

 

[Butch Cassidy]

My 2003 ss107 BDM blows oil out the crank case breather, (that's located behind the back jug) when I hot rod it a lot. My breather has a hose going to the crankcase. When I ride it staying under 3 1/2 grand no problems. Any ideas??

Add oil only to the halfway spot b

I think sometimes they may drip or spit oil once in a while. Never heard or seen one that throws oil all over the engine. Maybe it's over full?

yes; overfill is my guess too

 

[Butch Cassidy]

Also; that breather tube, make it into a U shape so no water gets in and hot oil stays in.

 

[Sven]

My 2003 blows oil out the crank case breather...when I hot rod it

See if this analogy works for you. Throw a tablespoon full of liquid soap in a baggie. Add water. Zip it closed. Now, shake the shit out of it.

See, if you had the ratio right with the soap v. water, you'd have bubbles galore in the bag, right? So you whipped shit out of the crank spin and moved the oil like a bag of soapy water. Pop goes the bubbles, right? When they finally explode, that's more or less free flying bubbles not collected as a solid, or escaping as a coated bubble.

Kind of see how a bubble could float or really, be pushed out towards the tube by the crank pressure, pop against the breather tube and drips down out of the tube come morning?

When I ride it staying under 3 1/2 grand no problems. Any ideas??

Next day we go out and clean up the garage floor directly under that hose, and the bag of soapy water is just laying there with the bubbles gone. Go over there and pickup the bag. Hold each end at the zip line corners. Hold it out and look at the level in the bag. Tilt the bag like a sea-saw...

... Watch the waves made. You're getting sleepy... just watch the wave and keep the sea-saw going. Your eyes lids are heavy and dropping... look at the wave... keep looking at the wave. Now say, 'no bubbles at three and a half grams of throttle.' Your arms are getting tired and the bag weighs as much as a crankcase.

When I say, "I'm a semi-total loss oil system" and clap my hands, you drop the bag down your trousers, hop over on one leg and check the oil bag level on your bike.

Sven's Hypno Traveling Show will be heading to Text Ass next week, then north to Rogue Island four two weak ends. Sea you dare.

Signed,
Bubbles Will Travel