I am looking to buy a new motor for my recently acquired project car 2006 Cooper S. I most likely (still TBD) will need a new block / crankshaft and maybe a new head. Found this motor, but it is listed as W10:


As far as I can tell it is W11. The difference between the two are two coolant outlets: on the front side, left and right:
* On W11 the left outlet is plugged, the right is not
* On W10 the left outlet is not plugged, it has a pipe mounted there, while the right outlet is plugged, for example:


I also know that W11 has oil sprinklers inside the block for each cyl, while W10 doesn't.

What else can be used to visually distinguish one from another, when the engine is already stripped?

 

The top motor has the w11 dipstick tube and idler pulley.

 

The internals for a w10 do not interchange with the w11 so don’t try to combine the internals together , on the r50 the water pump, alternator , intake, thermostat housing, starter, clutch, flywheel, one side of the axles are different

 

W10 also doesn’t have a oil cooling system so the oil filter housing is just a housing without a cooler