Talk Morgan Forums Morgan Sports Cars Classic Morgans (pre-CX) Where have all the Roadsters gone?

Could someone explain in basic terms the difference between the various Roadster models. I see DaveW and others referring to S1, then NeilM referring to S2 and others mention a S3 . What model years relate to S1, S2 or S3?

I assume the change to the larger 3.7 cyclone engine accounts for one of the series designations.

From a happy 2007 3.0ltr owner (S1 I think!)