Ah, I posted about this way back when when it was new, who knows, not me. Someone more clever will have to come along and see. I believe Larry is having this done on his saturn.
However, it might be worth noting that Hondas don't really have quench spaces, at least not D, B, H, or F series Hondas. I haven't seen a K or L taken apart that I know of but I don't they changed their basic head casting.
This person is a regular contributor at teamswift in the FE forum. I haven't talked to him about this though. What's the supposed mechanism that helps FE?
He mentions the grooves helped reduce ping, which he got by going with a shaved head / increased compression ratio. But, isn't taking material out of the combustion chamber simply reducing the compression ratio again?
the idea of the grooves I think is they help to chanal the flame to the outer edges to help with a faster more compleat burn, and altho the groves will help to reduce compression I doubt, unless he bearly touched the head when he shaved it, that those tiny notches have no way of making up that much volume.
well, how much is a few? because i would love to see a real test done just to have a REAL test done. if a handfull of us pitched in $20each, and a junkyard run ensued??
For something like this, I think it would be better to use a junk car on it's way out. I believe I remember reading about certain auto manufacturers trying to do this on their engines, but they found it was too difficult to do correctly, so they abandoned the modification.