29 May 2004 Automotive parts in Airplanes
From: Wheeler North
Automotive coolant hoses are not rated for constant fuel and oil exposure,
they will usually begin the swell and sweat the oil through. They can also
delaminate internally and then possibly cause a plug. I would never use this
in a breather installation.
Use the soft 3003 aluminum versa tube with the 303 hose and ss clamps for
the connections.
RE little crankcase vent filter used in cars. These are most often
integrated with a PCV valve, to which you wouldn’t want in an AC engine.
These can not only plug up, but they are rated for a specific flow and most
of us do not have access to what that is, or how to appropriately rate one
to a lycoming.
If either of these plug, you will have your front seal move out, or a case
gasket move out, and a big oil leak to follow.
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