ABZY
Well-Known Member
Is it M30 M90 and what are all the letters sometimes quoted after?
M90s are not the same as M30s, they were found in euro e24s. Show us some pics.
Wow, thank you for that. It is so obvious now that I reference it, yet that number/displacement relationship never occurred to me.The M30 is a particular BMW engine design. The letters after usually indicate the displacement a particular series of M30 engines.