Thoughts…
Decades ago we didn’t have the computer technology, like the AI and modeling software today.
Today we can create better alloys.
Machining technology is probably way better than 50 years ago.
Testing results are probably more provable with highly advanced data collection technology.
Dimpling probably does do something to improve power and fuel consumption.
For the race industry maybe it’s a new thing.
However, at the end of the day, if you spend a tiny tiny fraction of the cost of dimpling and just raise the compression 1% or 2% you get same or better power increase.
How well do those little dimples do after 50,000 miles and the top of the piston has layers of carbon on it?
If dimpling was a big thing for the big automotive manufacturers, they would have done it.
Gnarls.
