Originally Posted by NovaBandit
I think I was one of the first to put the AntiSplat cowl flaps in a 10 in lieu of the traditional louvers.
I battle a little with high CHTs, especially if I'm heat soaked... even in moderate temperatures. I absolutely have room for improvement on my baffling, and I'm hoping that will help a lot when I redo the baffling material, but the cowl flaps are not a magic bullet.
You got it. If the air is bypassing the hot parts, it contributes only drag. Exit area as big as a garbage can won't solve an underlying problem with poor heat transfer. Cold air in, only lukewarm out, and the engine stays hot.
It's why I ask folks to measure exit temperature.