13-03-2018, 09:57 PM
As I mentioned in an earlier post, the pistons of the 'Big Seven' and the 'New Eight, CR 6.8 to 1' - 1937 to 1948 are the same - Hepolite RS7665 with a bore of 2.235". Without knowing for certain having similarly not owned either model, it's possible the blocks are the same. Robin Taylor of Austin Big 7 Spares would presumably know if they are - robin.e.taylor@talktalk.net