Blowing oil from rockers where hoses are going to hyper charger

HI normaly the only areas i would look at other than possible head gasket,Check oil level is correct, is there is a blockage in the engine breathing side (possibly internal of rocker cover) sludged up. Or possible excessive crankcase pressure of course any one of these could lead onto the other if all the above check out ok then a cylinder leakage test should be carried out.(this is different to a compression test).Good Luck

check for oil leaks around the engine manifold check rocker cover for leaks if its a diesel check the turbo charger for leaks check wiring around exhaust manifold

Possibly too much oil in the system, try in any case running half way between add and full, OR plugged breather system if rocker boxes OR excessive compression blow-by in worn engine OR possibly badly plugged air filter OR

One thing to check, pull your air cleaner cover & filter (if stock setup) start the bike and see if the rocker box breathers are blowing out air like they should, I have seen where people have put too much thread locker or silicone sealer and blocked off the breather fittings in the rocker boxes, when those pistons come down that pressure has to go out somewhere.
It could be a stuck oil pressure relief valve in the cam plate.
Also, check your oil after an oil change, about 100-150 miles.
If it's really dark from that short time, you might be getting compression blowing by your rings.
You didn't give your mileage, but a 14 year old engine might be about ready for a ring job.

OIl from the pcv valve from the oil being retained in the rocker cover from the oil not being allowed to run back to the sump.. Blockage at the oil return line to the sump from the turbo allowing oil pressure to leak past the seals on the turbo shaft. Check for kinked hose or hose failing internally closing it off

The problem is the the air breathers inside the rocker covers. Sad to say,but nearly all of them do this. One solution is to take off the air filter cover. There should be two bolts..(one on each side of the inside of the housing) that SHOULD have hoses hooked to them. If they do not have the hoses hooked to them,then that is your problem. See,these bolts are hollow,and have a nipple on the ends of them. These allow the top end to "breathe",a crankcase pressure relief if you will.Anyway,..these nipples are SUPPOSED to have a small hose on each of them,that re-direct the oil/crankcase pressure, into the carb/throttle body,which eliminates the oil running into your air filter housing.Check to make sure they are in fact there,and let me know what you find.

check for the breather pipe from rocker cover to throttle body. either you do have a problem with the rocker cover release valve on breather and allows oil going into throttle as every time accelerated **** oil. if there is not any valve there in then see whether you can fit any type of a straight pipe filter on the hose to cut out the oil flow.

If I remember right, there is a breather on top the rocker cover (very top of the motor). It may have a hose coming from it to the air cleaner assembly (may depend on year and emissions if it has a hose or not). That breather twists out of the rocker cover and you pour the oil inside the cover.
Oil goes in the rocker cover and it drains down into the oil pan.

Well, there is an "umbrella valve" in each of the center sections of the rocker box. These can and do get brittle from the repeated heating and cooling. They do a good job of keeping the bulk of oil out of the air filter but they can't get it all. As will all previous Harleys, they blow a bit of oil and those that relieve their crankcase pressure into the air filter do still make a mess that must be cleaned out occasionally. But, it shouldn't be excessive. Excessive blowby on the rings can exaggerate the problem.

To replace the "umbrella valves", simply take the bolts out of the rocker box cover and replace the gaskets and the valve. You will have to pull the fuel tanks to do this job.

Good Luck
Steve

Ok, the 1/4" hole is probably the float bowl vent. Look at the front of the carb you want to install the hypercharger on. It probably has three screws that hold the air filter on and then a fouth hole. This is the float bowl vent. Look at the hypercharger and see if it has the four holes or just three. This may be the reason for drilling the hole.

Now, the butterflies are controlled by vacuum. The hose from the hypercharger has to go to a vacuum source from behind the carb. There is a hose that runs from the backside of the carb up to the VOES switch and the fuel petcock. You may can splice into this hose.

Good Luck
Steve