AG burr finish

In other words, if the air/fuel mixture that does make it to the cylinder is 'good' then the engine is gonna be happy. We see that in the impressive power and (generally) clean combustion.

What happens to the fuel that isn’t mixed well with the air??? You can’t have impressive power and clean combustion running raw fuel into the chamber.

If that's true, then 99% of the hot rod engines out there aren't making impressive power/clean combustion...because we can see from the Kaase engine that even a high-end race engine has serious fuel separation issues. I bet that engine is making serious power despite the fuel issue. If the engine isn't running well...then Kaase is pulling our leg by showing what an unhealthy engine looks like. I don't think he's doing that.


It's safe to assume that fuel stuck to the intake walls eventually gets pulled back into the air, molecule by molecule, and into the cylinder. Is it well homogenized or not? The amount of turbulence we see would suggest that the fuel at least has a chance to be shaken and not stirred before it goes into the cylinder.

It’s not safe to assume that fuel running down the walls eventually gets pulled back into the air. Once wet fuel is on a surface, it’s hard to get it back into the air. That’s why the burr finish has been on my mind for years. If you can get the rough finish to cause the fuel to break up into smaller sizes, you have a much better chance of getting the fuel back into the air and making the fuel useable to make power.

The fuel must be getting pulled back into the air. If not, it would accumulate and the intake would eventually fill up with raw gas. The fuel has to be making its way into the chamber....and if it were running into the chamber in a purely liquid state, we wouldn't see clean spark plugs and good power. I think that if you are showing a decent A/F ratio on the exhaust side, the engine is fairly content. The compensation for the fuel puddling? The carb would be jetted leaner until the A/F ratio came into range. I'll bet that Kaase engine, despite the fuel puddling we see, is showing some decent BSFC numbers. I wish he told us.