[Chris in CT]

Hi Bob,

I chose a slightly different approach from the oil filler tube modification cited above, but very similar to the marine "flame arrestor" also referred to. I drilled and tapped a 1/2-20 hole into the valve galley cover, at the top of the cover. I made a small baffled fitting to screw into the hole, and connected it via rubber tubing to the intake of my air maze attachment.

I feel that it is more effective than the oil filler tube attachment because it allows the crankcase to breathe directly, and completely eliminates the oil percolation through the filler tube that so often happens with the Model A engine at higher engine speeds. In addition, it is barely visible and you would have to be observant to even see it. The engine runs noticeably cooler, and the engine bay is as clean as a whistle.

Sorry for no pictures, but I still haven't figured out how to post these yet. Happy Motoring!