How well do you understand your piston engine cooling and baffle leaks?

Mike Busch published an excellent article on engine cooling, baffles, leaks, and hot cylinder. Every pilot and owner should read and understand this.

The key insight is air isn't just rushing into the top of the engine through air intake and blowing out the back. More intricately, the top of the engine is designed as a high pressure area, like an inflatable balloon (the air rushing in blows it up, so the rubber baffles press against he cowling creating an air tight seal), and the bottom of the engine is a low pressure area, that is literally sucking the air from the top of the engine to the bottom like 12 vacuum cleaners (one for each cylinder).

The pressure differential between top and bottom is just 1/4 psi so even a tiny 1/8" gap will reduce or eliminate air flow entirely from top to bottom, so bottom of your cylinder stop getting cooling.
Read more:

"Sure enough, I discovered that the intercylinder baffle between cylinders #1 and #3 had vibrated loose and shifted about 1/4 inch out of position, creating a significant air leak near the #3 cylinder. "

https://blog.aopa.org/aopa/2017/03/29/its-baffling/

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