Crank sprigot bearing

[jimmymig]

Do I use e30 sprigot bearing with m52 and e30 gearbox cheers jim

[Brianmoooore]

Basically, yes, but check that the inside diameter of the bearing matches the size of the gearbox spigot.

[jimmymig]

Thank Brian couldn't remember what I fitted to my last engine

[Brianmoooore]

It's not the engine type that determines things. A M50 or M52 spigot bearing will fit a M10/20/40/42 engine and vice versa.
The range of gearboxes likely to be considered have a 12mm or a 15mm diameter input shaft spigot, so the bearing needs to be chosen to match this.