- Joined
- Jul 7, 2009
- Messages
- 114
I have acquired a project ES2 that has both 1947 and 1948 engine parts. I believe the 1947 engine uses lever followers as a continuation of pre-war practice and the 1948 uses axially sliding tappets acting on the cams to transfer motion to the pushrods. I seems to me that there was significant evolution of the engine post war and I am unclear as to which parts will fit which years. For example, are the head and barrel the same for 1947/1948? I know the rocker box is different between these years but cannot find amy discussion of the year to year evolution of the pushrod 79x100 engines. If anyone would like to explain the evolution of point me to where this is discussed, I would appreciate it. Thanks in advance.