[BRENT in 10-uh-C]

Originally Posted by Bob Bidonde

This video is for a single cylinder Flathead motor, but it is similar to the configuration of a cylinder in a Model "A" engine. https://www.youtube.com/watch?v=s-Li-mwjvlg

Bob, what he is calling "shaving the eyebrows" was originally what was the relieved part was back in the 40s & 50s when they said 'Port & Relieved on a flathead Ford.

The biggest two things that I came out of this video is; 1) there is not any flow numbers on the before and after to see whether he actually did any good. Often times, you can hurt flow by grinding away metal.

And 2), the Briggs do not deal with reversion like the Model-A/B engines do because of the Ford's shared intake port. I first became educated on serious horsepower of a flathead from my son's early racing days with a kart and a jr. dragster. The R&D that has been spent in the Briggs world is unreal.

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