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BEST 220GP CRANK VENTILATION POINT AND HOSE(S) POSITION?

E

EYEARICKS11

Member
-WHO KNOWS WHERE THE BEST PORT TO VENT MY 220GP FROM (FRONT OR BACK) AND WHERE THE HOSE SHOULD BE ROUTED TO.
-IS TWO HOSES (FROM FRONT AND BACK) TOO MUCH?
 
Something along the same lines.
how do you think it would work to run your crankcase vent to a
stainless vacume tube welded into the end of your exhaust ?
do you think it would create too much vacum in the case.
would it be better than only having case pressure to push the
moisture out? or would the vacume just pull more moist cool air
into that hot crank case and make more water.
regaurdless of this dribble, run your vent hose downhill after you
exit the crank case.
 
I would be cautious on putting your vent tubes to your headers . Car motors (BAD TO THE BONE) do this same thing from there valve covers to the headers. Evacuation tubes.
I have this set up on my 8 cylinder and I am scared it will suck the oil rite off the piston pin. So I have not hooked them up!
Anybody have some experience with evacuation tubes on a aircraft.
 
on my 220gpu the rear vent is capped. The idea was on take off allthe oil would run to the back of the engine and loose more oil. so they capped it three years ago. Still running Strong!!!!! I would vent the front but probably run it down do to moisture. Some info on MOISTURE IN OIL ......THANKS FOR THE INFO GUYS! MUCH APPRECIATED :lol:
 
FROM WHAT I'VE HEARD SO FAR, FROM THIS AND OTHER CONVERSATIONS, THE CAPPING THE BACK, VENTING THE FRONT, AND RUNNING IT STRAIGHHT DOWN IS THE MOST POPULAR. THAT'S WHAT I'LL DO. THANKS FOR YOUR TIME ER'BODY.
THAT EXHAUST APPLICATION IS OVER MY HEAD FOR NOW. I WOULD LIKE TO KNOW IF IT WORKS THOUGH. MAYBE IT WOULD HELP GETTING RID OF THE BLOW BY OIL BY BURNING IT.
 
Below is a picture of one of the best 220 GPU setups I've seen. It was taken in Nebraska, where most GPUs were set up this way. The crankcase is vented out the rear of the engine at the top of the accessory case into a large air/oil separator and into the host exhaust. The oil is drained back into the engine into the lower area of the accessory case. Next time I take off my port exhaust I will weld it up the same.

vent.jpg
 
The only problem I see with that is the moisture or condensation that collects in the oil demister also drains back into the motor. Running your breather to the headers would create a vacuum generator affect and pull humidity into your motor.
 
I'm happy to say it doesn't work like that. The air/oil separator does what it says. The oil goes back into the engine and the moisture and air vent out. No moisture goes back to the engine. However, the air/oil separator never gets all the blow-by and some oil goes out the vent. The 220 GPU has the most blow-by or crankcase pressure I've seen on any motor but it's controllable.

The way I have mine set up now, I run the return oil to an empty quart oil bottle so I can see how much oil is being returned. There's no moisture in it at all. There is still steam and some oil out the final vent though.
 
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