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Sure... the Walker unit ( as usual, available from aircraft spruce ) is STC'd for virtually everything. A very similar separator was actually standard in certain years of Cessna 150s. However, a word of caution about such critters. I had one (not the Walker) which worked just nifty in the warm months. Kept the belly squeaky clean, minimized oil consumption, etc. However, one day when it got good and cold, and the engine got good and hot, but the firewall was good and cold, apparently enough water/oil/slime mix bubbled up from the engine and then froze (that gunk makes a pretty nasty plug pretty quit) around the breather input inside the separator and associated hose. The engine then began 'breathing' through the return line. And with every breath, it pumped more oil into the separator from where, having nowhere else to go, it spurted out the outlet line. I landed with 3 quarts of oil on the belly and only a couple left in the sump. We cleaned everything out (an up real good). And all was well until again one day I got about a 1-quart repeat performance. Whereupon I tossed the separator about as far as I could, and bought a bottle of degreaser to remove the haze I now get on the belly. The other thing my A&P and I noted was that the stuff coming back in through the return line tended to be not just oil, but the goopy 'baby shit' emulsification of oil and any moisture that had built up in the engine. That's right, I said 'coming back in.' In other words, the liquid that was being separated from the air also included water which normally would evaporate out through the breather. Our conclusion: 'Gee, that can't be real good for the engine.' I think the lesson here is that the separators need to be mounted somewhere they'll stay nice and warm. Or that failing that, a clean belly could be an expensive vanity. Now, baby Continentals, the O-200 worst of all, tend to toss oil right off the camshaft into the breather line. This is due to the internal geometry of the engine. Continental sold an alternate breather elbow that had a pipe brazed onto it which projected into the case a couple of inches and got the breather airflow away from the cam splash. I don't have the part number handy. It may be unavailable or expensive. However, an A&P can fabricate one of these from an AN elbow and a piece of pipe by brazing it together. Again, there are instructions around; I used to have them but I lost them. I'm told that this reduces O-200 breather slobber substantially. Greg At 01:35 PM 1/7/2004 -0500, [EMAIL PROTECTED] wrote: >----[Please read http://ercoupers.com/disclaimer.htm before following any >advice in this forum.]---- > > >Hey everyone, > Does anyone know if there is an STC'd air/oil separator for the O-200 > engine? After finaly having a nice clean zinc chromated center section, > the last thing I want if for it to fill up with oil and gunk. >Thanks >Scott >========================================================================= ===== >To leave this forum go to: http://ercoupers.com/lists.htm >Search the archives on http://escribe.com/aviation/coupers/ ========================================================================== ==== To leave this forum go to: http://ercoupers.com/lists.htm Search the archives on http://escribe.com/aviation/coupers/
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