21/4 Petrol engine bearing sizes

[johnlandon1]

Can anyone tell me the sizes of my shell bearings???

Crank shells have number 276857

Conrod shells have number 248747

Both have the "glacier" bearing company mark

many thanks

[SafeAirOne]

A quick googling produced no results. Probably best to just mic the crankshaft (or use an accurate caliper) to determine the correct size.