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Old 05-25-2007 | 12:34 PM
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N429EM
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From: Omaha, NE
Default Positive crankcase ventilation

Boy, do I open myself up for criticism.

Anyway, I had a brainstorm, last night, while reading some threads concerning the oil spray on the outside of the plane. Some of the discussions were referencing where/how to vent the crankcase on 4-strokes. Well, I thought it might help cut down on the different sources of oil spray. The drawing below is a Pitts-style muffler, but I'm sure it could be adapted to other 4-stroke mufflers. My idea is to install a small pipe in the exhaust stream and use it to direct the crankcase venting into the exhaust stream. If it gets burned, great. If not, at least it's in the same area as exhausted oil, from the ignition process. And, not spraying oil somewhere else on the plane.

Depending on responses, I may be doing this to my Saito FA80, as a test.

So, what do you guys think?
Criticisms, be brutal. If this is a dumb idea, at least I put it on paper and my mind will stop thinking about it.

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