worst motors of all time

You are very close on this one, but there IS one worst and it's ...........Italian

I can never pull it out of my memory. "Marrieli" or some such. Used on.................Fiats..............

which is part of the reason I hate them
Magneti Marelli....uh look under the hood of any new Mopar, yup....same company! They also made Edelbrocks Pro-Flow 1-2 gen EFI controllers. I literally had a MM toggle switch in my hand and it didn't work. The spring broke in half! I replaced it and then the contact fell out, just ****......