REFLECTOR: Breather Lines

nmflyer1 at aol.com nmflyer1 at aol.com
Sat May 7 22:22:37 CDT 2011


Scott, 

Sounds like you are getting there. The breather system I have runs to a vented, drainable can. Got if from Summitt Racing. Not sure if you remember seeing it by the redrive or not. Here is a link to one like I have:

http://www.summitracing.com/parts/SUM-G1504/




Keep us in the loop. 

 Kurt 






-----Original Message-----
From: Scott Derrick <scott at tnstaafl.net>
To: reflector <reflector at tvbf.org>
Sent: Sat, May 7, 2011 6:49 pm
Subject: REFLECTOR: Breather Lines


I ripped(well removed)  the 5/8 breather line from my IO520.  I think I mentioned that I probably exacerbated the problem by splicing the 5/8 line  becasue I ran out of a single piece that would fit.  I can't count the times I've shot my self in the foot by saving a dime or a minute.

Replaced it with a 3/4 line and removed the air/oil separator from the system.

Flew for two+ hours today and not one sign of seepage from around the pan gasket or crank seal! 

Thanks to John Tvedte for the great tip!

I'm going to fly for a few more hours like its set up to really verify things are good.  I once again have a nice oil streak on the lower cowling originating from the breather tube. 

If the seep areas stay dry I will reconnect the air/oil separator to give it one more shot. Blowing through it with my mouth it exhibits no back pressure that is discernible. And its does a great job of reducing the oil blown out to almost nothing.  

I'm toying with the idea of strapping a 1/4" tube to the side of the exhaust stack and letting it burn the oil instead of returning it back into the case. I'm not 100% convinced returning to which it came is that bad of an idea, but I'm open to listen.  I've also thought about mounting a collector on the firewall that could be drained from out side the plane...

Scott

-- 
ne of the sanest, surest, and most generous joys of life comes from being happy over the good fortune of others.
obert A. Heinlein

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