“I miss pushrod engines, cheap to make, perfected over time, reliable and easy to repair. OHC engines are what consumers demand now or else a car maker will be accused of having an old fashioned design”.
I think it is a question of time before even simple push lawnmowers go to overhead cam engines. I was looking at lawnmowers yesterday since the mower I purchased in 1988 with a flat head 1 cylinder engine may be on its way out. All the new mowers had overhead valve engines. I suppose in a few years they will introduce overhead cam engines with belts that need to be replaced or the engines will self-destruct.