P&W radial commonality

[tallguy]

Curious about parts commonality amongst the various P&W radials. For instance, the R-2000, R-2180 and R-1340 cylinders share bores. Were the R-1830 and R-2000 connecting rods/crankshaft interchangeable? Did any share superchargers? Any other major components?

 

[Kevin Renner]

It would make sense from a production standpoint to have different engines designed around a common cylinder type.