Quote Originally Posted by Landy Smurf View Post
I recently got into a debate with a guy at a clearing out sale who thought he new everything and kept referring to later series ones as 1a's...
btw in that swb s2/2a...do some s2a's have those vent knobs?
I thought they were only s2, however I do know a lot fo parts carried over for a while
Screw type controls are listed in the 2a parts book with no changeover suffix, just with the reference "alternates", suggesting they were not confined to Series 2. My memory says they changed in Australia at least, very early in Series 2a production.

In any case it is inconceivable that the change in vent control would have coincided exactly with the change to 2a, which was defined by the introduction of the 2.25 diesel.

John