kbalch
Well Known Member
I used the Saf-Air oil drain plug on my RV-8's IO-360 and bought one with the intention of installing it on the RV-14A's IO-390. However...
The -390 doesn?t have a single, obvious plug on the bottom of the crankcase, but two plugs (yellow arrows on attached photo) at an equal height - neither of which is anywhere near the lowest point of the system. The red arrow indicates the sniffle valve (covered in this image) location.
So?where to place the oil drain valve?
The -390 doesn?t have a single, obvious plug on the bottom of the crankcase, but two plugs (yellow arrows on attached photo) at an equal height - neither of which is anywhere near the lowest point of the system. The red arrow indicates the sniffle valve (covered in this image) location.
So?where to place the oil drain valve?