That's interesting. I can't see how that would improve homogeneity. If the head doesn't scavenge well I cant see how that would help getting it started.
Also with it being so deep I would imagine indexing the plugs would be a given.
It doesn’t improve homogeneity. It provides a space for a more homogeneous mixture. Believe it or not, that chamber scavenges pretty well. And if you notice, that space also starts the burn t the plug but directs it to the exhaust side of the chamber.
That chamber isn’t nearly as archaic as the GM people want us to think.
