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[aclass]

I hear ya and forgive me for "speaking freely",   but how much sense does that make??   The moco says 4 quarts,  the dipstick has a "full level" mark so why would anybody want to run low "life blood" in their engine.
If so,  I'll gladly do it,   but is this indeed the problem and the fix???   

[Talon]

I get a little oil when I ride hard, if your getting enough oil to cause performance issues I'd say it's time for a compression/leak down test. Harley will tell you the oil is normal, and it can be, but not that much. The testing may find a issue that you can have fixed under warranty.

Craig

[guppytrash]

I hear ya and forgive me for "speaking freely",   but how much sense does that make??   The moco says 4 quarts,  the dipstick has a "full level" mark so why would anybody want to run low "life blood" in their engine.
If so,  I'll gladly do it,   but is this indeed the problem and the fix???   

Just saying if your oil level is too high it will puke it out and it will end up in the throttle body.  As far as 4 quarts that is what it holds but as I learned here that is not
the quantity you start with when refilling after an oil change.  Check the manual...I dont remember exactly what it says for refilling but I would guess most HD shops just dump 4 in and let it go. 
I agree with you, I would not run mine low, and if you are right on the full mark this is probably not an overfill issue. 
But I would say if it is overfilled, even a little this indeed could be the problem and the fix.
Looking forward to what you find out as you are definitely the leader of the pack with 30k.

[aclass]

Actually it's the Op that holds the "leader of the pack" status,    I'm trying to determine why my new SERG is puking oil and am hi-jacking his thread.

I've heard that too much oil could be the culprit for the puking and I understand that while making darn sure I'm at or just below the full mark.   Which is why I'm belly aching b/c that doesnt seem to be the fix.
I put 24K on my 06 and not a hint of oil in the breather,  ever!   and I changed the oil on it just like I do on my SERG and I keep the oil level at the full mark.  Same with my 03,  19K miles.

[Talon]

I've read many threads that state that running just a little low can help with excessive oil in the breather. The HD motor is a dry sump motor, I'm not saying that it doesn't help, but can someone explain to me how? The amount of oil in the motor unless really low in the tank shouldn't change based on the amount of oil in the tank. The oil pump and the system savaging should determine this, or is there something I'm missing. 

Craig

[erniezap]

I'm not sure of the physics, but it's about pressuring the cases.  Same thing goes for blowing off the dipstick in the 103's.  Run them full and jump on it, you lose the dipstick sometimes.  Run it with a little less oil, you don't lose the dipstick...

[aclass]

I'm not sure of the physics, but it's about pressuring the cases. 

  With ya on both accounts

[Talon]

I'm not sure of the physics, but it's about pressuring the cases.  Same thing goes for blowing off the dipstick in the 103's.  Run them full and jump on it, you lose the dipstick sometimes.  Run it with a little less oil, you don't lose the dipstick...

Yea, I agree, but not sure what changes when you run less oil, I can see it maybe with the oil tank popping the cap, because of volume of oil, the amount of venting, and the pressure from the pump. But the oil from the tank is pulled in by the pump, the amount of oil in the engine should then be controlled by the pump. I also agree with this being caused by crankcase pressure, but don't understand the lower volume in the tank helping. Not saying it's not true, but, can't see what they would change. Maybe the volume of oil is causing some type of venting problem in the tank, that then caused the pressure to increase in the motor. Where's the engine wizards when you need them!!!  

[nudels2u75]

Strealership installed throttle body parts today....The compression on the front and rear is 160PSI......Then, They ran a leak down test and the front cylinder was at 7% and the rear cylinder is at 6% they told me the MotoCompany will allow up to 10%.....I was told that they will call MotoCompany on Monday and talk to them and find out what to do about it.....They suggested that I leave my scooter there for 3 days to remove the heads and do something with a umbrella valve or something>>>>I am not sure I know next to nothing about motors......I just do not like the ideal of some kid taking my heads off and then, going to be the one to put it back together....I am not sure what to do at this point.....any more suggestions.....thanks for the advice, greatly appreciated, thanks nudels

[Gecko]

Just a thougth here.  There is a certain volume in the crank case that gets displaced by the decending pistons.  It has to go somewhere.  Most of it gets released through the vents, the rest goes to pressurizing the engine and everything connected to it by a hose.  The higher the rpm the more air there is to be vented and as some point the head vents can't keep up.  If the oil level in the tank is high there is little air volume at the top and it becomes pressurized to the point that it blows the cap off.  If there is enough volume in the top of the oil tank it doesn't reach a high enough pressure to dislodge the cap.  Similar thing for puking oil out the breathers, when there is too much air trying to go out the vents it takes oil with it; if some of the air can go to the oil tank instead less has to go through the vents.  Or this could be completely wrong.  Maybe a Baker plus one with four quarts isn't such a bad idea?  Or since this has been a problem since the Evo came out the MOCO could have corrected it a long time ago with more case volume or better venting.

The umbrella valves control air going into the heads, so if they are bad it could cause the problem.

[hdctss]

if nobody answered yet, the oil pump on the 110 is the same as on the 96

[nudels2u75]

The moco contacted me and wants me to take the zipper breather off and reinstall the stock air filter assembly.....This does not make any sense to me at all....How could this possibly affect the way that it is puking oil out of the current filter.....If anybody has had any dealings with this or changing out your stock element, please let me know......I just sold my 2007 Dyna low rider 96 cu inch.....I had a hi-flow on it with no problems....I had it 24 months and 6 months of the time it was in the shop, but never for this same type problem....when I sold it just turned 24 months old and had 73,000 miles on it......

[grc]

The moco contacted me and wants me to take the zipper breather off and reinstall the stock air filter assembly.....This does not make any sense to me at all....How could this possibly affect the way that it is puking oil out of the current filter.....If anybody has had any dealings with this or changing out your stock element, please let me know......I just sold my 2007 Dyna low rider 96 cu inch.....I had a hi-flow on it with no problems....I had it 24 months and 6 months of the time it was in the shop, but never for this same type problem....when I sold it just turned 24 months old and had 73,000 miles on it......

When you say the MoCo contacted you, I assume you meant the dealership. Typical stalling tactic, blame it on the modification the owner did.  BTW, has this always been an issue, or did it just show up recently?

The way it could affect the puking is easy; the stock plastic airbox can hold quite a bit of oil before it reaches the air intake holes and leaks out.  The open element air cleaners can't contain very much oil before it seeps through the air filter and runs all over your leg and the side of the bike.  So reinstalling the stock airbox could make it appear the problem is solved, for a little while. 

Jerry

[timo482]

are you trying to get it fixed under a warranty?

if so it needs to be stone stock or they can in fact tell you to suck it up and pay for it yourself - and they do in fact have the legal right to do that since changing the air cleaner is "tampering"

nasty but true

im convinced that as the economy gets tighter & hd is less profitable there will be more and more of - change anything and its your dime to fix it.

bummer

to

[BillH]

The way it could affect the puking is easy; the stock plastic airbox can hold quite a bit of oil before it reaches the air intake holes and leaks out.

I'm with Jerry here - The stock airbox is a large volume container that will hold a large volume of oil before it shows up on your leg. 

For whatever reason, every HD motor I have owned has been "happy" running 1/2 qt low.  I started out religiously filling to the full mark, only to have to clean up that extra 1/2 qt from the motor, pipes, jeans, bags, ... you get the point!!  I have never had a motor seize, or malfunction due to lack of 1/2 qt of oil.  Quite the contrary - motors seem happier running with that deficit.

Keep the Zippers a/c, run 1/2 lower, and enjoy your ride. 

Bill